NOAA NWS / Event history

Typhoon Warning issued October 18 at 3:01PM ChST by NWS Tiyan GU

Typhoon Warning · Guam. Extreme; likely; urgency: immediate.

See what changed ↓Detailed event record ↗

Bulletin issued: 18 October 2026 at 05:01 UTC
First saved by us: 16 October 2026 at 06:17 UTC
Last included in a daily record: 18 October 2026
The linked daily edition preserves what we captured that UTC day; this event page is not a live warning.
Source classification: Extreme · Source update

A recent feed check does not mean a new observation. This page preserves source records; it does not establish current safety or warning status.

Issuer / area: NWS Tiyan GU · Guam
Certainty / urgency: Likely / Immediate
Message expiry (not hazard end): 18 October 2026 at 13:15 UTC
Forecast onset / end: 18 October 2026 at 05:01 UTC / Not supplied

Archived official description

...SUPER TYPHOON CHAMPI CONTINUES WEST, AWAY FROM GUAM WATERS... .NEW INFORMATION... None. .AREAS AFFECTED... This local statement provides important information and recommended actions for people in Guam and the Northern Marianas. .Watches/Warnings... A Typhoon Warning continues for Guam and Rota. Although tropical cyclone watches or warnings are not in effect for Tinian and Saipan, possible impacts from related hazards are still a concern. A Flood Watch is in effect for portions of Guam and the Northern Marianas. Please listen closely for any Flood Warnings that might be in effect for your area. Please check the latest public and marine forecasts for detailed information about additional hazards. .STORM INFORMATION... At 2 PM ChST...the center of Super Typhoon Champi (29W) was located near latitude 13.0N...longitude 142.6E. This was about 150 miles west of Guam. Storm motion was west, 260 degrees, at 12 mph. Storm intensity was 150 mph. .SITUATION OVERVIEW... Super Typhoon Champi continues to move generally westward with a slight southward turn over the last few hours, and a slight decrease in forward speed. The eye remains very small and compact, appearing to fill in with cloud cover in the latest visible satellite imagery, with a width of around 5 miles across. It looks to be going through an eyewall replacement cycle. GLD network data shows frequent lightning within the deep convection along the southern eyewall, which is beginning to exit radar range. Surface observations from Guam International Airport show strong sustained winds of 25 to 30 mph with frequent tropical storm-force gusts up to 60 mph. At Saipan, winds are fresh to strong with gusts to 35 mph.

Instructions in this archived message

As frequent damaging tropical storm-force gusts continue, do not go outside to check for damage or to implement temporary repairs, even as sustained winds diminish through the next few hours. Occasional strong tropical storm-force gusts will maintain dangerous conditions outdoors. Do not open the doors of your home or shelter until high winds fully subside. Wait for the all-clear signal. Passing showers will bring very strong gusts without warning.

The saved record

What changed

10 updates · 1 first record

Each update compares two versions we saved. This may not include every update from the source. A missing report does not mean an event has ended.

Showing the latest 3 changes

Saved by us
18 October 2026 at 05:02 UTC
Version 11
8 recorded details changed
Title
Before
Typhoon Warning issued October 18 at 12:02PM ChST by NWS Tiyan GU
After
Typhoon Warning issued October 18 at 3:01PM ChST by NWS Tiyan GU
Source updated
Before
18 October 2026 at 02:02 UTC
After
18 October 2026 at 05:01 UTC
Effective from
Before
18 October 2026 at 02:02 UTC
After
18 October 2026 at 05:01 UTC
Forecast onset
Before
18 October 2026 at 02:02 UTC
After
18 October 2026 at 05:01 UTC
Message expiry
Before
18 October 2026 at 10:15 UTC
After
18 October 2026 at 13:15 UTC
Official description
Before
...SUPER TYPHOON CHAMPI MOVING WEST-NORTHWEST AWAY FROM GUAM COASTAL WATERS... ...A TROPICAL STORM WARNING AND TYPHOON WATCH ARE NO LONGER IN EFFECT FOR TINIAN AND SAIPAN... .NEW INFORMATION... The Tropical Storm Warning and Typhoon Watch for Tinian and Saipan are cancelled. .AREAS AFFECTED... This local statement provides important information and recommended actions for people in Guam and the Northern Marianas. .Watches/Warnings... A Typhoon Warning continues for Guam and Rota. Although tropical cyclone watches or warnings are not in effect for Tinian and Saipan, possible impacts from related hazards are still a concern. A Flood Watch is in effect for portions of Guam and the Northern Marianas. Please listen closely for any Flood Warnings that might be in effect for your area. Please check the latest public and marine forecasts for detailed information about additional hazards. .STORM INFORMATION... At 11 AM ChST, the center of Super Typhoon Champi (29W) was located near latitude 13.1N, longitude 143.1E. This was about 115 miles west-southwest of Guam. Storm motion was west-northwest, 290 degrees, at 14 mph. Storm intensity was 150 mph. .SITUATION OVERVIEW... Super Typhoon Champi continues to move west-northwestward as the eye pulls away from Guam coastal waters, with its outermost rainbands occasionally crossing the island. Sustained winds hover around or just below damaging tropical storm-force late this morning, with occasional Typhoon-force gusts to around 75 mph. Champi's eye, and the destructive conditions within its compact eyewall, narrowly missed Guam early this morning, passing just 10 miles south of the southern tip of the island at around 4:26 AM ChST. The eye remains compact and very well-defined, with a width of around 5 miles. The islands of Tinian and Saipan are well outside of the radius of sustained tropical-storm force conditions, but damaging gusts to 45 mph are still occurring. The Tropical Storm Warning, and Typhoon Watch, are no longer in effect for Tinian and Saipan. .PRECAUTIONARY/PREPAREDNESS ACTIONS...
After
...SUPER TYPHOON CHAMPI CONTINUES WEST, AWAY FROM GUAM WATERS... .NEW INFORMATION... None. .AREAS AFFECTED... This local statement provides important information and recommended actions for people in Guam and the Northern Marianas. .Watches/Warnings... A Typhoon Warning continues for Guam and Rota. Although tropical cyclone watches or warnings are not in effect for Tinian and Saipan, possible impacts from related hazards are still a concern. A Flood Watch is in effect for portions of Guam and the Northern Marianas. Please listen closely for any Flood Warnings that might be in effect for your area. Please check the latest public and marine forecasts for detailed information about additional hazards. .STORM INFORMATION... At 2 PM ChST...the center of Super Typhoon Champi (29W) was located near latitude 13.0N...longitude 142.6E. This was about 150 miles west of Guam. Storm motion was west, 260 degrees, at 12 mph. Storm intensity was 150 mph. .SITUATION OVERVIEW... Super Typhoon Champi continues to move generally westward with a slight southward turn over the last few hours, and a slight decrease in forward speed. The eye remains very small and compact, appearing to fill in with cloud cover in the latest visible satellite imagery, with a width of around 5 miles across. It looks to be going through an eyewall replacement cycle. GLD network data shows frequent lightning within the deep convection along the southern eyewall, which is beginning to exit radar range. Surface observations from Guam International Airport show strong sustained winds of 25 to 30 mph with frequent tropical storm-force gusts up to 60 mph. At Saipan, winds are fresh to strong with gusts to 35 mph.
Official instructions
Before
As damaging tropical storm-force conditions continue, do not go outside to check for damage or to implement temporary repairs, even as sustained winds begin to diminish through the next few hours. Occasional typhoon-force, or strong tropical storm-force gusts, will maintain dangerous conditions outdoors. Do not open the doors of your home or shelter until high winds fully subside. Wait for the all-clear signal. Passing rain showers will bring very strong gusts without warning.
After
As frequent damaging tropical storm-force gusts continue, do not go outside to check for damage or to implement temporary repairs, even as sustained winds diminish through the next few hours. Occasional strong tropical storm-force gusts will maintain dangerous conditions outdoors. Do not open the doors of your home or shelter until high winds fully subside. Wait for the all-clear signal. Passing showers will bring very strong gusts without warning.
External source link
Before
https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.e048915f876016bb415d43a6a114bbf10de92154.001.1
After
https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.e45c43cdf22bc5e22e9e9e488eac770866bf398c.001.1
Bulletin issued: 18 October 2026 at 05:01 UTC
View saved version 11
Original saved fields, unchanged. This is our record, not an archived copy of the external webpage.
{ "id": "nws:a43760ed419b97497d44151d", "authorityId": "urn:oid:2.49.0.1.840.0.e45c43cdf22bc5e22e9e9e488eac770866bf398c.001.1", "sender": "w-nws.webmaster@noaa.gov", "references": [ { "identifier": "urn:oid:2.49.0.1.840.0.8f96da8543860aa3cc71d31b3156d80289ac78dd.001.1", "sender": "w-nws.webmaster@noaa.gov" }, { "identifier": "urn:oid:2.49.0.1.840.0.f85c1cb2776ac5a31a0748a0fd7609ce3ffc26c7.001.1", "sender": "w-nws.webmaster@noaa.gov" }, { "identifier": "urn:oid:2.49.0.1.840.0.e048915f876016bb415d43a6a114bbf10de92154.001.1", "sender": "w-nws.webmaster@noaa.gov" } ], "category": "weather", "title": "Typhoon Warning issued October 18 at 3:01PM ChST by NWS Tiyan GU", "eventType": "Typhoon Warning", "occurredAt": "2026-10-18T05:01:00.000Z", "issuedAt": "2026-10-18T05:01:00.000Z", "timeBasis": "Bulletin issued", "effectiveAt": "2026-10-18T05:01:00.000Z", "onsetAt": "2026-10-18T05:01:00.000Z", "expiresAt": "2026-10-18T13:15:00.000Z", "forecastEndAt": null, "severity": "Extreme", "urgency": "Immediate", "certainty": "Likely", "messageType": "Update", "status": "Source update", "place": "Guam", "coordinates": null, "issuer": "NWS Tiyan GU", "summary": "Typhoon Warning · Guam. Extreme; likely; urgency: immediate.", "description": "...SUPER TYPHOON CHAMPI CONTINUES WEST, AWAY FROM GUAM WATERS...\n\n.NEW INFORMATION...\nNone.\n\n.AREAS AFFECTED...\nThis local statement provides important information and\nrecommended actions for people in Guam and the Northern Marianas.\n\n.Watches/Warnings...\nA Typhoon Warning continues for Guam and Rota.\n\nAlthough tropical cyclone watches or warnings are not in effect\nfor Tinian and Saipan, possible impacts from related hazards are\nstill a concern.\n\nA Flood Watch is in effect for portions of Guam and the Northern\nMarianas. Please listen closely for any Flood Warnings that might\nbe in effect for your area.\n\nPlease check the latest public and marine forecasts for detailed\ninformation about additional hazards.\n\n.STORM INFORMATION...\nAt 2 PM ChST...the center of Super Typhoon Champi (29W) was\nlocated near latitude 13.0N...longitude 142.6E. This was about\n150 miles west of Guam. Storm motion was west, 260 degrees, at 12\nmph. Storm intensity was 150 mph.\n\n.SITUATION OVERVIEW...\nSuper Typhoon Champi continues to move generally westward with a\nslight southward turn over the last few hours, and a slight\ndecrease in forward speed. The eye remains very small and compact,\nappearing to fill in with cloud cover in the latest visible\nsatellite imagery, with a width of around 5 miles across. It looks\nto be going through an eyewall replacement cycle. GLD network\ndata shows frequent lightning within the deep convection along the\nsouthern eyewall, which is beginning to exit radar range. Surface\nobservations from Guam International Airport show strong sustained\nwinds of 25 to 30 mph with frequent tropical storm-force gusts up\nto 60 mph. At Saipan, winds are fresh to strong with gusts to 35\nmph.", "instruction": "As frequent damaging tropical storm-force gusts continue, do not\ngo outside to check for damage or to implement temporary repairs,\neven as sustained winds diminish through the next few hours.\nOccasional strong tropical storm-force gusts will maintain\ndangerous conditions outdoors. Do not open the doors of your home\nor shelter until high winds fully subside. Wait for the all-clear\nsignal. Passing showers will bring very strong gusts without\nwarning.", "url": "https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.e45c43cdf22bc5e22e9e9e488eac770866bf398c.001.1", "source": "nws", "sourceName": "NOAA NWS" }
Visit the external source ↗
The external page may have changed since this version was saved.
Saved by us
18 October 2026 at 02:02 UTC
Version 10
8 recorded details changed
Title
Before
Typhoon Warning issued October 18 at 9:38AM ChST by NWS Tiyan GU
After
Typhoon Warning issued October 18 at 12:02PM ChST by NWS Tiyan GU
Source updated
Before
17 October 2026 at 23:38 UTC
After
18 October 2026 at 02:02 UTC
Effective from
Before
17 October 2026 at 23:38 UTC
After
18 October 2026 at 02:02 UTC
Forecast onset
Before
17 October 2026 at 23:38 UTC
After
18 October 2026 at 02:02 UTC
Message expiry
Before
18 October 2026 at 07:45 UTC
After
18 October 2026 at 10:15 UTC
Official description
Before
...CHAMPI UPGRADED TO SUPER TYPHOON AS IT CONTINUES WESTWARD, SOUTHWEST OF GUAM... .NEW INFORMATION... Champi has been upgraded to a Super Typhoon. .AREAS AFFECTED... This local statement provides important information and recommended actions for people in Guam and the Northern Marianas. .WATCHES/WARNINGS... A Typhoon Warning continues for Guam and Rota. A Tropical Storm Warning and a Typhoon Watch continue for Tinian and Saipan. A Flood Watch is in effect for portions of Guam and the Northern Marianas. Please listen closely for any Flood Warnings that might be in effect for your area. Please check the latest public and marine forecasts for detailed information about additional hazards. .STORM INFORMATION... At 7 AM ChST...the center of Super Typhoon Champi (29W) was located near latitude 13.2N...longitude 144.3E. This was about 40 miles west-southwest of Guam. Storm motion was west-northwest, 290 degrees, at 16 mph. Storm intensity was 150 mph. .SITUATION OVERVIEW... Super Typhoon Champi continues to barrel west-northwestward as the eye exits Guam coastal waters, with its outer rainbands continuing to sweep the island. Sustained damaging tropical storm force-winds continue at Guam International Airport this morning, with occasional Typhoon-force gusts to 80 mph. Champi's eye, and the destructive conditions within its compact eyewall, narrowly missed Guam early this morning, passing just 10 miles south of the southern tip of the island at around 4:26 AM ChST. The eye remains compact and very well-defined, with a width of around 5 to 6 miles.
After
...SUPER TYPHOON CHAMPI MOVING WEST-NORTHWEST AWAY FROM GUAM COASTAL WATERS... ...A TROPICAL STORM WARNING AND TYPHOON WATCH ARE NO LONGER IN EFFECT FOR TINIAN AND SAIPAN... .NEW INFORMATION... The Tropical Storm Warning and Typhoon Watch for Tinian and Saipan are cancelled. .AREAS AFFECTED... This local statement provides important information and recommended actions for people in Guam and the Northern Marianas. .Watches/Warnings... A Typhoon Warning continues for Guam and Rota. Although tropical cyclone watches or warnings are not in effect for Tinian and Saipan, possible impacts from related hazards are still a concern. A Flood Watch is in effect for portions of Guam and the Northern Marianas. Please listen closely for any Flood Warnings that might be in effect for your area. Please check the latest public and marine forecasts for detailed information about additional hazards. .STORM INFORMATION... At 11 AM ChST, the center of Super Typhoon Champi (29W) was located near latitude 13.1N, longitude 143.1E. This was about 115 miles west-southwest of Guam. Storm motion was west-northwest, 290 degrees, at 14 mph. Storm intensity was 150 mph. .SITUATION OVERVIEW... Super Typhoon Champi continues to move west-northwestward as the eye pulls away from Guam coastal waters, with its outermost rainbands occasionally crossing the island. Sustained winds hover around or just below damaging tropical storm-force late this morning, with occasional Typhoon-force gusts to around 75 mph. Champi's eye, and the destructive conditions within its compact eyewall, narrowly missed Guam early this morning, passing just 10 miles south of the southern tip of the island at around 4:26 AM ChST. The eye remains compact and very well-defined, with a width of around 5 miles. The islands of Tinian and Saipan are well outside of the radius of sustained tropical-storm force conditions, but damaging gusts to 45 mph are still occurring. The Tropical Storm Warning, and Typhoon Watch, are no longer in effect for Tinian and Saipan. .PRECAUTIONARY/PREPAREDNESS ACTIONS...
Official instructions
Before
…ngerous conditions outdoors. Do not open the doors of your home or shelter until high winds fully subside. Wait for the ~~all- clear~~ signal. Passing rain showers will bring very strong gusts without warning.
After
…ngerous conditions outdoors. Do not open the doors of your home or shelter until high winds fully subside. Wait for the all-clear signal. Passing rain showers will bring very strong gusts without warning.
External source link
Before
https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.f85c1cb2776ac5a31a0748a0fd7609ce3ffc26c7.001.1
After
https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.e048915f876016bb415d43a6a114bbf10de92154.001.1
Bulletin issued: 18 October 2026 at 02:02 UTC
View saved version 10
Original saved fields, unchanged. This is our record, not an archived copy of the external webpage.
{ "id": "nws:54aaf688d4a799826262901c", "authorityId": "urn:oid:2.49.0.1.840.0.e048915f876016bb415d43a6a114bbf10de92154.001.1", "sender": "w-nws.webmaster@noaa.gov", "references": [ { "identifier": "urn:oid:2.49.0.1.840.0.8f96da8543860aa3cc71d31b3156d80289ac78dd.001.1", "sender": "w-nws.webmaster@noaa.gov" }, { "identifier": "urn:oid:2.49.0.1.840.0.055e621cf1da043247c479ddca8241afb4380bd2.001.1", "sender": "w-nws.webmaster@noaa.gov" }, { "identifier": "urn:oid:2.49.0.1.840.0.f85c1cb2776ac5a31a0748a0fd7609ce3ffc26c7.001.1", "sender": "w-nws.webmaster@noaa.gov" } ], "category": "weather", "title": "Typhoon Warning issued October 18 at 12:02PM ChST by NWS Tiyan GU", "eventType": "Typhoon Warning", "occurredAt": "2026-10-18T02:02:00.000Z", "issuedAt": "2026-10-18T02:02:00.000Z", "timeBasis": "Bulletin issued", "effectiveAt": "2026-10-18T02:02:00.000Z", "onsetAt": "2026-10-18T02:02:00.000Z", "expiresAt": "2026-10-18T10:15:00.000Z", "forecastEndAt": null, "severity": "Extreme", "urgency": "Immediate", "certainty": "Likely", "messageType": "Update", "status": "Source update", "place": "Guam", "coordinates": null, "issuer": "NWS Tiyan GU", "summary": "Typhoon Warning · Guam. Extreme; likely; urgency: immediate.", "description": "...SUPER TYPHOON CHAMPI MOVING WEST-NORTHWEST AWAY FROM GUAM\nCOASTAL WATERS...\n...A TROPICAL STORM WARNING AND TYPHOON WATCH ARE NO LONGER IN\nEFFECT FOR TINIAN AND SAIPAN...\n\n.NEW INFORMATION...\nThe Tropical Storm Warning and Typhoon Watch for Tinian and Saipan\nare cancelled.\n\n.AREAS AFFECTED...\nThis local statement provides important information and\nrecommended actions for people in Guam and the Northern Marianas.\n\n.Watches/Warnings...\nA Typhoon Warning continues for Guam and Rota.\n\nAlthough tropical cyclone watches or warnings are not in effect\nfor Tinian and Saipan, possible impacts from related hazards are\nstill a concern.\n\nA Flood Watch is in effect for portions of Guam and the Northern\nMarianas. Please listen closely for any Flood Warnings that might\nbe in effect for your area.\n\nPlease check the latest public and marine forecasts for detailed\ninformation about additional hazards.\n\n.STORM INFORMATION...\nAt 11 AM ChST, the center of Super Typhoon Champi (29W) was located\nnear latitude 13.1N, longitude 143.1E. This was about 115 miles\nwest-southwest of Guam. Storm motion was west-northwest, 290\ndegrees, at 14 mph. Storm intensity was 150 mph.\n\n.SITUATION OVERVIEW...\nSuper Typhoon Champi continues to move west-northwestward as the eye\npulls away from Guam coastal waters, with its outermost rainbands\noccasionally crossing the island. Sustained winds hover around or\njust below damaging tropical storm-force late this morning, with\noccasional Typhoon-force gusts to around 75 mph. Champi's eye, and\nthe destructive conditions within its compact eyewall, narrowly\nmissed Guam early this morning, passing just 10 miles south of the\nsouthern tip of the island at around 4:26 AM ChST. The eye remains\ncompact and very well-defined, with a width of around 5 miles. The\nislands of Tinian and Saipan are well outside of the radius of\nsustained tropical-storm force conditions, but damaging gusts to 45\nmph are still occurring. The Tropical Storm Warning, and Typhoon\nWatch, are no longer in effect for Tinian and Saipan.\n\n.PRECAUTIONARY/PREPAREDNESS ACTIONS...", "instruction": "As damaging tropical storm-force conditions continue, do not go\noutside to check for damage or to implement temporary repairs,\neven as sustained winds begin to diminish through the next few\nhours. Occasional typhoon-force, or strong tropical storm-force\ngusts, will maintain dangerous conditions outdoors. Do not open\nthe doors of your home or shelter until high winds fully subside.\nWait for the all-clear signal. Passing rain showers will bring\nvery strong gusts without warning.", "url": "https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.e048915f876016bb415d43a6a114bbf10de92154.001.1", "source": "nws", "sourceName": "NOAA NWS" }
Visit the external source ↗
The external page may have changed since this version was saved.
Saved by us
17 October 2026 at 23:47 UTC
Version 9
8 recorded details changed
Title
Before
Typhoon Warning issued October 18 at 4:40AM ChST by NWS Tiyan GU
After
Typhoon Warning issued October 18 at 9:38AM ChST by NWS Tiyan GU
Source updated
Before
17 October 2026 at 18:40 UTC
After
17 October 2026 at 23:38 UTC
Effective from
Before
17 October 2026 at 18:40 UTC
After
17 October 2026 at 23:38 UTC
Forecast onset
Before
17 October 2026 at 18:40 UTC
After
17 October 2026 at 23:38 UTC
Message expiry
Before
18 October 2026 at 02:45 UTC
After
18 October 2026 at 07:45 UTC
Official description
Before
Updated for compact wind radii, reducing winds for Rota and Guam. ...TYPHOON CHAMPI NOW A DANGEROUS CATEGORY 4 MOVING WEST INTO GUAM COASTAL WATERS... .NEW INFORMATION... None. .AREAS AFFECTED... This local statement provides information and recommended actions for people on Guam and on Rota, Tinian and Saipan in the Northern Marianas. .Watches/Warnings... A Typhoon Warning continues for Guam and Rota. A Tropical Storm Warning and a Typhoon Watch continues for Tinian and Saipan. A Flood Watch is in effect for Rota, Tinian and Saipan in the Northern Marianas. Please listen closely for any Flood Warnings that might be in effect for your area. A Flash Flood Warning is now in effect for Guam. Please check the latest public and marine forecasts for detailed information about additional hazards. .STORM INFORMATION... At 4 AM ChST...the center of Typhoon Champi (29W) was located near latitude 13.1N...longitude 144.9E. This was about 25 miles southeast of Guam. Storm motion was west, 280 degrees, at 15 mph. Storm intensity was 140 mph. This general forecast track will take Champi about 15 miles south of Guam as a Category 4 typhoon as it intensifies further the next few days west of the Marianas. .SITUATION OVERVIEW... Typhoon Champi (29W) has been undergoing rapid intensification today. As a result it is now a dangerous category 4 typhoon. It is expected to pass a little south of Guam as a super typhoon within the next 12 hours. This may potentially bring devastating wind conditions to much of Guam during passage. .PRECAUTIONARY/PREPAREDNESS ACTIONS...
After
...CHAMPI UPGRADED TO SUPER TYPHOON AS IT CONTINUES WESTWARD, SOUTHWEST OF GUAM... .NEW INFORMATION... Champi has been upgraded to a Super Typhoon. .AREAS AFFECTED... This local statement provides important information and recommended actions for people in Guam and the Northern Marianas. .WATCHES/WARNINGS... A Typhoon Warning continues for Guam and Rota. A Tropical Storm Warning and a Typhoon Watch continue for Tinian and Saipan. A Flood Watch is in effect for portions of Guam and the Northern Marianas. Please listen closely for any Flood Warnings that might be in effect for your area. Please check the latest public and marine forecasts for detailed information about additional hazards. .STORM INFORMATION... At 7 AM ChST...the center of Super Typhoon Champi (29W) was located near latitude 13.2N...longitude 144.3E. This was about 40 miles west-southwest of Guam. Storm motion was west-northwest, 290 degrees, at 16 mph. Storm intensity was 150 mph. .SITUATION OVERVIEW... Super Typhoon Champi continues to barrel west-northwestward as the eye exits Guam coastal waters, with its outer rainbands continuing to sweep the island. Sustained damaging tropical storm force-winds continue at Guam International Airport this morning, with occasional Typhoon-force gusts to 80 mph. Champi's eye, and the destructive conditions within its compact eyewall, narrowly missed Guam early this morning, passing just 10 miles south of the southern tip of the island at around 4:26 AM ChST. The eye remains compact and very well-defined, with a width of around 5 to 6 miles.
Official instructions
Before
Dangerous typhoon conditions will soon occur for central and southern Guam. Everyone should be quickly moving to safety within their home or shelter. Once inside, ensure all windows and doors are secured before dangerous winds arrive. Move to an interior room on the lowest floor. Be aware that the loss of commercial power can happen quickly. Keep emergency gear handy.
After
As damaging tropical storm-force conditions continue, do not go outside to check for damage or to implement temporary repairs, even as sustained winds begin to diminish through the next few hours. Occasional typhoon-force, or strong tropical storm-force gusts, will maintain dangerous conditions outdoors. Do not open the doors of your home or shelter until high winds fully subside. Wait for the all- clear signal. Passing rain showers will bring very strong gusts without warning.
External source link
Before
https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.055e621cf1da043247c479ddca8241afb4380bd2.001.1
After
https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.f85c1cb2776ac5a31a0748a0fd7609ce3ffc26c7.001.1
Bulletin issued: 17 October 2026 at 23:38 UTC
View saved version 9
Original saved fields, unchanged. This is our record, not an archived copy of the external webpage.
{ "id": "nws:80f17726fe3b88c57518491f", "authorityId": "urn:oid:2.49.0.1.840.0.f85c1cb2776ac5a31a0748a0fd7609ce3ffc26c7.001.1", "sender": "w-nws.webmaster@noaa.gov", "references": [ { "identifier": "urn:oid:2.49.0.1.840.0.8f96da8543860aa3cc71d31b3156d80289ac78dd.001.1", "sender": "w-nws.webmaster@noaa.gov" }, { "identifier": "urn:oid:2.49.0.1.840.0.055e621cf1da043247c479ddca8241afb4380bd2.001.1", "sender": "w-nws.webmaster@noaa.gov" } ], "category": "weather", "title": "Typhoon Warning issued October 18 at 9:38AM ChST by NWS Tiyan GU", "eventType": "Typhoon Warning", "occurredAt": "2026-10-17T23:38:00.000Z", "issuedAt": "2026-10-17T23:38:00.000Z", "timeBasis": "Bulletin issued", "effectiveAt": "2026-10-17T23:38:00.000Z", "onsetAt": "2026-10-17T23:38:00.000Z", "expiresAt": "2026-10-18T07:45:00.000Z", "forecastEndAt": null, "severity": "Extreme", "urgency": "Immediate", "certainty": "Likely", "messageType": "Update", "status": "Source update", "place": "Guam", "coordinates": null, "issuer": "NWS Tiyan GU", "summary": "Typhoon Warning · Guam. Extreme; likely; urgency: immediate.", "description": "...CHAMPI UPGRADED TO SUPER TYPHOON AS IT CONTINUES WESTWARD,\nSOUTHWEST OF GUAM...\n\n.NEW INFORMATION...\nChampi has been upgraded to a Super Typhoon.\n\n.AREAS AFFECTED...\nThis local statement provides important information and\nrecommended actions for people in Guam and the Northern Marianas.\n\n.WATCHES/WARNINGS...\nA Typhoon Warning continues for Guam and Rota.\n\nA Tropical Storm Warning and a Typhoon Watch continue for Tinian\nand Saipan.\n\nA Flood Watch is in effect for portions of Guam and the Northern\nMarianas. Please listen closely for any Flood Warnings that might\nbe in effect for your area.\n\nPlease check the latest public and marine forecasts for detailed\ninformation about additional hazards.\n\n.STORM INFORMATION...\nAt 7 AM ChST...the center of Super Typhoon Champi (29W) was\nlocated near latitude 13.2N...longitude 144.3E. This was about\n40 miles west-southwest of Guam. Storm motion was west-northwest,\n290 degrees, at 16 mph. Storm intensity was 150 mph.\n\n.SITUATION OVERVIEW...\nSuper Typhoon Champi continues to barrel west-northwestward as\nthe eye exits Guam coastal waters, with its outer rainbands\ncontinuing to sweep the island. Sustained damaging tropical storm\nforce-winds continue at Guam International Airport this morning,\nwith occasional Typhoon-force gusts to 80 mph. Champi's eye, and\nthe destructive conditions within its compact eyewall, narrowly\nmissed Guam early this morning, passing just 10 miles south of the\nsouthern tip of the island at around 4:26 AM ChST. The eye\nremains compact and very well-defined, with a width of around 5 to\n6 miles.", "instruction": "As damaging tropical storm-force conditions continue, do not go\noutside to check for damage or to implement temporary repairs,\neven as sustained winds begin to diminish through the next few\nhours. Occasional typhoon-force, or strong tropical storm-force\ngusts, will maintain dangerous conditions outdoors. Do not open\nthe doors of your home or shelter until high winds fully subside.\nWait for the all- clear signal. Passing rain showers will bring\nvery strong gusts without warning.", "url": "https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.f85c1cb2776ac5a31a0748a0fd7609ce3ffc26c7.001.1", "source": "nws", "sourceName": "NOAA NWS" }
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Show 7 earlier updates

Saved by us
17 October 2026 at 18:47 UTC
Version 8
8 recorded details changed
Title
Before
Typhoon Warning issued October 18 at 3:01AM ChST by NWS Tiyan GU
After
Typhoon Warning issued October 18 at 4:40AM ChST by NWS Tiyan GU
Source updated
Before
17 October 2026 at 17:01 UTC
After
17 October 2026 at 18:40 UTC
Effective from
Before
17 October 2026 at 17:01 UTC
After
17 October 2026 at 18:40 UTC
Forecast onset
Before
17 October 2026 at 17:01 UTC
After
17 October 2026 at 18:40 UTC
Message expiry
Before
18 October 2026 at 05:15 UTC
After
18 October 2026 at 02:45 UTC
Official description
Before
...TYPHOON CHAMPI NOW A DANGEROUS CATEGORY 4 MOVING WEST INTO GUAM COASTAL WATERS... .NEW INFORMATION... None. .AREAS AFFECTED... This local statement provides information and recommended actions for people on Guam and on Rota, Tinian and Saipan in the Northern Marianas. .Watches/Warnings... A Typhoon Warning continues for Guam and Rota. A Tropical Storm Warning and a Typhoon Watch continues for Tinian and Saipan. A Flood Watch is in effect for Rota, Tinian and Saipan in the Northern Marianas. Please listen closely for any Flood Warnings that might be in effect for your area. A Flash Flood Warning is now in effect for Guam. Please check the latest public and marine forecasts for detailed information about additional hazards. .STORM INFORMATION... At 1 AM ChST...the center of Typhoon Champi (29W) was located near latitude 13.0N...longitude 145.4E. This was about 55 miles southeast of Guam. Storm motion was west, 275 degrees, at 14 mph. Storm intensity was 140 mph. This general forecast track will take Champi just south of Guam as a Category 4 typhoon as it intensifies further the next few days west of the Marianas. .SITUATION OVERVIEW... Typhoon Champi (29W) has been undergoing rapid intensifi…
After
Updated for compact wind radii, reducing winds for Rota and Guam. ...TYPHOON CHAMPI NOW A DANGEROUS CATEGORY 4 MOVING WEST INTO GUAM COASTAL WATERS... .NEW INFORMATION... None. .AREAS AFFECTED... This local statement provides information and recommended actions for people on Guam and on Rota, Tinian and Saipan in the Northern Marianas. .Watches/Warnings... A Typhoon Warning continues for Guam and Rota. A Tropical Storm Warning and a Typhoon Watch continues for Tinian and Saipan. A Flood Watch is in effect for Rota, Tinian and Saipan in the Northern Marianas. Please listen closely for any Flood Warnings that might be in effect for your area. A Flash Flood Warning is now in effect for Guam. Please check the latest public and marine forecasts for detailed information about additional hazards. .STORM INFORMATION... At 4 AM ChST...the center of Typhoon Champi (29W) was located near latitude 13.1N...longitude 144.9E. This was about 25 miles southeast of Guam. Storm motion was west, 280 degrees, at 15 mph. Storm intensity was 140 mph. This general forecast track will take Champi about 15 miles south of Guam as a Category 4 typhoon as it intensifies further the next few days west of the Marianas. .SITUATION OVERVIEW... Typhoon Champi (29W) has been undergoing rapid intensifi…
Official instructions
Before
Dangerous typhoon conditions will soon occur. Everyone should be quickly moving to safety within their home or shelter. Once inside, ensure all windows and doors are secured before dangerous winds arrive. Move to an interior room on the lowest floor. Do not go outside into the eye of typhoons. Within the eye, conditions can become temporarily calm, which can be misleading. Once the eye passes, the winds will change direction and quickly increase again to dangerous speeds. Be aware that the loss of commercial power can happen quickly. Keep emergency gear handy.
After
Dangerous typhoon conditions will soon occur for central and southern Guam. Everyone should be quickly moving to safety within their home or shelter. Once inside, ensure all windows and doors are secured before dangerous winds arrive. Move to an interior room on the lowest floor. Be aware that the loss of commercial power can happen quickly. Keep emergency gear handy.
External source link
Before
https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.8f96da8543860aa3cc71d31b3156d80289ac78dd.001.1
After
https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.055e621cf1da043247c479ddca8241afb4380bd2.001.1
Bulletin issued: 17 October 2026 at 18:40 UTC
View saved version 8
Original saved fields, unchanged. This is our record, not an archived copy of the external webpage.
{ "id": "nws:292c7c24613feaf7d6a87b42", "authorityId": "urn:oid:2.49.0.1.840.0.055e621cf1da043247c479ddca8241afb4380bd2.001.1", "sender": "w-nws.webmaster@noaa.gov", "references": [ { "identifier": "urn:oid:2.49.0.1.840.0.9a5870c872448e6423b4191a0b6d1863ee7a2d3a.001.1", "sender": "w-nws.webmaster@noaa.gov" }, { "identifier": "urn:oid:2.49.0.1.840.0.8f96da8543860aa3cc71d31b3156d80289ac78dd.001.1", "sender": "w-nws.webmaster@noaa.gov" } ], "category": "weather", "title": "Typhoon Warning issued October 18 at 4:40AM ChST by NWS Tiyan GU", "eventType": "Typhoon Warning", "occurredAt": "2026-10-17T18:40:00.000Z", "issuedAt": "2026-10-17T18:40:00.000Z", "timeBasis": "Bulletin issued", "effectiveAt": "2026-10-17T18:40:00.000Z", "onsetAt": "2026-10-17T18:40:00.000Z", "expiresAt": "2026-10-18T02:45:00.000Z", "forecastEndAt": null, "severity": "Extreme", "urgency": "Immediate", "certainty": "Likely", "messageType": "Update", "status": "Source update", "place": "Guam", "coordinates": null, "issuer": "NWS Tiyan GU", "summary": "Typhoon Warning · Guam. Extreme; likely; urgency: immediate.", "description": "Updated for compact wind radii, reducing winds for Rota and Guam.\n\n...TYPHOON CHAMPI NOW A DANGEROUS CATEGORY 4 MOVING WEST INTO GUAM\nCOASTAL WATERS...\n\n.NEW INFORMATION...\nNone.\n\n.AREAS AFFECTED...\nThis local statement provides information and recommended actions for\npeople on Guam and on Rota, Tinian and Saipan in the Northern\nMarianas.\n\n.Watches/Warnings...\nA Typhoon Warning continues for Guam and Rota.\n\nA Tropical Storm Warning and a Typhoon Watch continues for Tinian\nand Saipan.\n\nA Flood Watch is in effect for Rota, Tinian and Saipan in the\nNorthern Marianas. Please listen closely for any Flood Warnings that\nmight be in effect for your area.\n\nA Flash Flood Warning is now in effect for Guam.\n\nPlease check the latest public and marine forecasts for detailed\ninformation about additional hazards.\n\n.STORM INFORMATION...\nAt 4 AM ChST...the center of Typhoon Champi (29W) was located near\nlatitude 13.1N...longitude 144.9E. This was about 25 miles southeast\nof Guam. Storm motion was west, 280 degrees, at 15 mph. Storm\nintensity was 140 mph. This general forecast track will take Champi\nabout 15 miles south of Guam as a Category 4 typhoon as it intensifies\nfurther the next few days west of the Marianas.\n\n.SITUATION OVERVIEW...\nTyphoon Champi (29W) has been undergoing rapid intensification\ntoday. As a result it is now a dangerous category 4 typhoon. It is\nexpected to pass a little south of Guam as a super typhoon within\nthe next 12 hours. This may potentially bring devastating wind\nconditions to much of Guam during passage.\n\n.PRECAUTIONARY/PREPAREDNESS ACTIONS...", "instruction": "Dangerous typhoon conditions will soon occur for central and southern\nGuam. Everyone should be quickly moving to safety within their home\nor shelter. Once inside, ensure all windows and doors are secured\nbefore dangerous winds arrive. Move to an interior room on the lowest\nfloor.\n\nBe aware that the loss of commercial power can happen quickly.\nKeep emergency gear handy.", "url": "https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.055e621cf1da043247c479ddca8241afb4380bd2.001.1", "source": "nws", "sourceName": "NOAA NWS" }
Visit the external source ↗
The external page may have changed since this version was saved.
Saved by us
17 October 2026 at 17:02 UTC
Version 7
7 recorded details changed
Title
Before
Typhoon Warning issued October 17 at 9:19PM ChST by NWS Tiyan GU
After
Typhoon Warning issued October 18 at 3:01AM ChST by NWS Tiyan GU
Source updated
Before
17 October 2026 at 11:19 UTC
After
17 October 2026 at 17:01 UTC
Effective from
Before
17 October 2026 at 11:19 UTC
After
17 October 2026 at 17:01 UTC
Forecast onset
Before
17 October 2026 at 11:19 UTC
After
17 October 2026 at 17:01 UTC
Message expiry
Before
17 October 2026 at 19:30 UTC
After
18 October 2026 at 05:15 UTC
Official description
Before
...TYPHOON CHAMPI NOW A DANGEROUS CATEGORY 4 MOVING WEST TOWARDS GUAM COASTAL WATERS... .NEW INFORMATION... Guam is now in Condition of Readiness 1 as of 1 PM ChST. Rota is now in Typhoon Condition of Readiness 1 as of 5 PM ChST. Saipan and Tinian remain in Typhoon Condition of Readiness 3. .AREAS AFFECTED... This local statement provides information and recommended actions for people on Guam and on Rota, Tinian and Saipan in the Northern Marianas. .Watches/Warnings... A Typhoon Warning continues for Guam and Rota. A Tropical Storm Warning and a Typhoon Watch continues for Tinian and Saipan. A Flood Watch is in effect for Rota, Tinian and Saipan in the Northern Marianas. Please listen closely for any Flood Warnings that might be in effect for your area. A Flash Flood Warning is now in effect for Guam. Please check the latest public and marine forecasts for detailed information about additional hazards. .STORM INFORMATION... At 7 PM ChST...the center of Typhoon Champi (29W) was located near latitude 12.6N...longitude 146.7E. This was about 140 miles east-southeast of Guam. Storm motion was west, 280 degrees, at 15 mph. Storm intensity was 130 mph. This general forecast track will take Champi just south of Guam as a Category 4 typhoon as it intensifies further the next few days. .SITUATION OVERVIEW... Typhoon Champi (29W) has been undergoing rapid intensification today. As a result it is now a d…
After
...TYPHOON CHAMPI NOW A DANGEROUS CATEGORY 4 MOVING WEST INTO GUAM COASTAL WATERS... .NEW INFORMATION... None. .AREAS AFFECTED... This local statement provides information and recommended actions for people on Guam and on Rota, Tinian and Saipan in the Northern Marianas. .Watches/Warnings... A Typhoon Warning continues for Guam and Rota. A Tropical Storm Warning and a Typhoon Watch continues for Tinian and Saipan. A Flood Watch is in effect for Rota, Tinian and Saipan in the Northern Marianas. Please listen closely for any Flood Warnings that might be in effect for your area. A Flash Flood Warning is now in effect for Guam. Please check the latest public and marine forecasts for detailed information about additional hazards. .STORM INFORMATION... At 1 AM ChST...the center of Typhoon Champi (29W) was located near latitude 13.0N...longitude 145.4E. This was about 55 miles southeast of Guam. Storm motion was west, 275 degrees, at 14 mph. Storm intensity was 140 mph. This general forecast track will take Champi just south of Guam as a Category 4 typhoon as it intensifies further the next few days west of the Marianas. .SITUATION OVERVIEW... Typhoon Champi (29W) has been undergoing rapid intensification today. As a result it is now a d…
External source link
Before
https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.9a5870c872448e6423b4191a0b6d1863ee7a2d3a.001.1
After
https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.8f96da8543860aa3cc71d31b3156d80289ac78dd.001.1
Bulletin issued: 17 October 2026 at 17:01 UTC
View saved version 7
Original saved fields, unchanged. This is our record, not an archived copy of the external webpage.
{ "id": "nws:f1b636365a0d6772c89b8b68", "authorityId": "urn:oid:2.49.0.1.840.0.8f96da8543860aa3cc71d31b3156d80289ac78dd.001.1", "sender": "w-nws.webmaster@noaa.gov", "references": [ { "identifier": "urn:oid:2.49.0.1.840.0.9a5870c872448e6423b4191a0b6d1863ee7a2d3a.001.1", "sender": "w-nws.webmaster@noaa.gov" } ], "category": "weather", "title": "Typhoon Warning issued October 18 at 3:01AM ChST by NWS Tiyan GU", "eventType": "Typhoon Warning", "occurredAt": "2026-10-17T17:01:00.000Z", "issuedAt": "2026-10-17T17:01:00.000Z", "timeBasis": "Bulletin issued", "effectiveAt": "2026-10-17T17:01:00.000Z", "onsetAt": "2026-10-17T17:01:00.000Z", "expiresAt": "2026-10-18T05:15:00.000Z", "forecastEndAt": null, "severity": "Extreme", "urgency": "Immediate", "certainty": "Likely", "messageType": "Update", "status": "Source update", "place": "Guam", "coordinates": null, "issuer": "NWS Tiyan GU", "summary": "Typhoon Warning · Guam. Extreme; likely; urgency: immediate.", "description": "...TYPHOON CHAMPI NOW A DANGEROUS CATEGORY 4 MOVING WEST INTO GUAM\nCOASTAL WATERS...\n\n.NEW INFORMATION...\nNone.\n\n.AREAS AFFECTED...\nThis local statement provides information and recommended actions for\npeople on Guam and on Rota, Tinian and Saipan in the Northern\nMarianas.\n\n.Watches/Warnings...\nA Typhoon Warning continues for Guam and Rota.\n\nA Tropical Storm Warning and a Typhoon Watch continues for Tinian\nand Saipan.\n\nA Flood Watch is in effect for Rota, Tinian and Saipan in the\nNorthern Marianas. Please listen closely for any Flood Warnings that\nmight be in effect for your area.\n\nA Flash Flood Warning is now in effect for Guam.\n\nPlease check the latest public and marine forecasts for detailed\ninformation about additional hazards.\n\n.STORM INFORMATION...\nAt 1 AM ChST...the center of Typhoon Champi (29W) was located near\nlatitude 13.0N...longitude 145.4E. This was about 55 miles southeast\nof Guam. Storm motion was west, 275 degrees, at 14 mph. Storm\nintensity was 140 mph. This general forecast track will take Champi\njust south of Guam as a Category 4 typhoon as it intensifies further\nthe next few days west of the Marianas.\n\n.SITUATION OVERVIEW...\nTyphoon Champi (29W) has been undergoing rapid intensification\ntoday. As a result it is now a dangerous category 4 typhoon. It is\nexpected to pass a little south of Guam as a super typhoon within\nthe next 12 hours. This may potentially bring devastating wind\nconditions to much of Guam during passage.\n\n.PRECAUTIONARY/PREPAREDNESS ACTIONS...", "instruction": "Dangerous typhoon conditions will soon occur. Everyone should be\nquickly moving to safety within their home or shelter. Once\ninside, ensure all windows and doors are secured before dangerous\nwinds arrive. Move to an interior room on the lowest floor.\n\nDo not go outside into the eye of typhoons. Within the eye,\nconditions can become temporarily calm, which can be misleading.\nOnce the eye passes, the winds will change direction and quickly\nincrease again to dangerous speeds.\n\nBe aware that the loss of commercial power can happen quickly.\nKeep emergency gear handy.", "url": "https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.8f96da8543860aa3cc71d31b3156d80289ac78dd.001.1", "source": "nws", "sourceName": "NOAA NWS" }
Visit the external source ↗
The external page may have changed since this version was saved.
Saved by us
17 October 2026 at 11:47 UTC
Version 6
8 recorded details changed
Title
Before
Typhoon Warning issued October 17 at 3:06PM ChST by NWS Tiyan GU
After
Typhoon Warning issued October 17 at 9:19PM ChST by NWS Tiyan GU
Source updated
Before
17 October 2026 at 05:06 UTC
After
17 October 2026 at 11:19 UTC
Effective from
Before
17 October 2026 at 05:06 UTC
After
17 October 2026 at 11:19 UTC
Forecast onset
Before
17 October 2026 at 05:06 UTC
After
17 October 2026 at 11:19 UTC
Message expiry
Before
17 October 2026 at 13:15 UTC
After
17 October 2026 at 19:30 UTC
Official description
Before
...CHAMPI UPGRADED TO TYPHOON AND BARRELING TOWARD THE MARIANAS... .NEW INFORMATION... None. .AREAS AFFECTED... This local statement provides information and recommended action for people on Guam, and people on Rota, Tinian and Saipan in the Commonwealth of the Northern Marianas. .Watches/Warnings... A Typhoon Warning continues for Guam and Rota. A Tropical Storm Warning and a Typhoon Watch continue for Tinian and Saipan. A Flood Watch is in effect for all of Guam and the Northern Marianas. Please listen closely for any Flood Warnings that might be in effect for your area. Please check the latest public and marine forecasts for detailed information about additional hazards. .STORM INFORMATION... At 100 PM ChST, the center of Typhoon Champi (29W) was located near latitude 12.5N and longitude 148.0E. This was about 225 miles east- southeast of Guam. Storm motion was west-northwest, 290 degrees, at 18 mph. Storm intensity has increased to 100 mph, making it a Category 2 typhoon. This general forecast track will take Champi just south of Guam as a Category 3 typhoon as it intensifies further the next few days. .SITUATION OVERVIEW... Showers and winds will continue to steadily increase the rest of today, to then deteriorate significantly tonight as newly upgraded Typhoon Champi continues to move in from the east-southeast. Champi is undergoing a period of rapid intensification, strengthening further as the day goes on. The most recent storm tracks continue to indicate Champi passing either south, or over, Guam Sunday morning, which may potentially bring devastating wind conditions to much of Guam during passage. Winds and rain will come in rapidly, with winds becoming dangerous and life threatening very soon after onset. Do not let a false sense of normalcy now dictate your actions tomorrow; prepare NOW!
After
...TYPHOON CHAMPI NOW A DANGEROUS CATEGORY 4 MOVING WEST TOWARDS GUAM COASTAL WATERS... .NEW INFORMATION... Guam is now in Condition of Readiness 1 as of 1 PM ChST. Rota is now in Typhoon Condition of Readiness 1 as of 5 PM ChST. Saipan and Tinian remain in Typhoon Condition of Readiness 3. .AREAS AFFECTED... This local statement provides information and recommended actions for people on Guam and on Rota, Tinian and Saipan in the Northern Marianas. .Watches/Warnings... A Typhoon Warning continues for Guam and Rota. A Tropical Storm Warning and a Typhoon Watch continues for Tinian and Saipan. A Flood Watch is in effect for Rota, Tinian and Saipan in the Northern Marianas. Please listen closely for any Flood Warnings that might be in effect for your area. A Flash Flood Warning is now in effect for Guam. Please check the latest public and marine forecasts for detailed information about additional hazards. .STORM INFORMATION... At 7 PM ChST...the center of Typhoon Champi (29W) was located near latitude 12.6N...longitude 146.7E. This was about 140 miles east-southeast of Guam. Storm motion was west, 280 degrees, at 15 mph. Storm intensity was 130 mph. This general forecast track will take Champi just south of Guam as a Category 4 typhoon as it intensifies further the next few days. .SITUATION OVERVIEW... Typhoon Champi (29W) has been undergoing rapid intensification today. As a result it is now a dangerous category 4 typhoon. It is expected to pass a little south of Guam as a super typhoon within the next 12 hours. This may potentially bring devastating wind conditions to much of Guam during passage. .PRECAUTIONARY/PREPAREDNESS ACTIONS...
Official instructions
Before
Make the final preparations to protect life and property. Rush to completion the hardening of your home or business by closing shutters and bracing garage doors. If evacuating, leave as soon as possible. Guard against being stuck out on roadways when dangerous winds and heavy rains arrive. Again, do not stay in a metal roof or container home. Remember, pets are not allowed in most official shelters, so check ahead with your intended shelter. If staying in a home, turn the refrigerator to maximum cold and keep it closed. Turn off propane tanks and unplug small appliances. Fill the bathtub with water in case the tap water becomes unavailable after the storm. This is for cleaning and flushing purposes. Do not drink it.
After
Dangerous typhoon conditions will soon occur. Everyone should be quickly moving to safety within their home or shelter. Once inside, ensure all windows and doors are secured before dangerous winds arrive. Move to an interior room on the lowest floor. Do not go outside into the eye of typhoons. Within the eye, conditions can become temporarily calm, which can be misleading. Once the eye passes, the winds will change direction and quickly increase again to dangerous speeds. Be aware that the loss of commercial power can happen quickly. Keep emergency gear handy.
External source link
Before
https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.f3ac425658ce0c4107e5c8d6fda782a704256e61.001.1
After
https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.9a5870c872448e6423b4191a0b6d1863ee7a2d3a.001.1
Bulletin issued: 17 October 2026 at 11:19 UTC
View saved version 6
Original saved fields, unchanged. This is our record, not an archived copy of the external webpage.
{ "id": "nws:622d7ba662b87df037a3d1b9", "authorityId": "urn:oid:2.49.0.1.840.0.9a5870c872448e6423b4191a0b6d1863ee7a2d3a.001.1", "sender": "w-nws.webmaster@noaa.gov", "references": [ { "identifier": "urn:oid:2.49.0.1.840.0.f3ac425658ce0c4107e5c8d6fda782a704256e61.001.1", "sender": "w-nws.webmaster@noaa.gov" } ], "category": "weather", "title": "Typhoon Warning issued October 17 at 9:19PM ChST by NWS Tiyan GU", "eventType": "Typhoon Warning", "occurredAt": "2026-10-17T11:19:00.000Z", "issuedAt": "2026-10-17T11:19:00.000Z", "timeBasis": "Bulletin issued", "effectiveAt": "2026-10-17T11:19:00.000Z", "onsetAt": "2026-10-17T11:19:00.000Z", "expiresAt": "2026-10-17T19:30:00.000Z", "forecastEndAt": null, "severity": "Extreme", "urgency": "Immediate", "certainty": "Likely", "messageType": "Update", "status": "Source update", "place": "Guam", "coordinates": null, "issuer": "NWS Tiyan GU", "summary": "Typhoon Warning · Guam. Extreme; likely; urgency: immediate.", "description": "...TYPHOON CHAMPI NOW A DANGEROUS CATEGORY 4 MOVING WEST TOWARDS\nGUAM COASTAL WATERS...\n\n.NEW INFORMATION...\nGuam is now in Condition of Readiness 1 as of 1 PM ChST. Rota is now\nin Typhoon Condition of Readiness 1 as of 5 PM ChST. Saipan and Tinian\nremain in Typhoon Condition of Readiness 3.\n\n.AREAS AFFECTED...\nThis local statement provides information and recommended actions for\npeople on Guam and on Rota, Tinian and Saipan in the Northern\nMarianas.\n\n.Watches/Warnings...\nA Typhoon Warning continues for Guam and Rota.\n\nA Tropical Storm Warning and a Typhoon Watch continues for Tinian\nand Saipan.\n\nA Flood Watch is in effect for Rota, Tinian and Saipan in the\nNorthern Marianas. Please listen closely for any Flood Warnings that\nmight be in effect for your area.\n\nA Flash Flood Warning is now in effect for Guam.\n\nPlease check the latest public and marine forecasts for detailed\ninformation about additional hazards.\n\n.STORM INFORMATION...\nAt 7 PM ChST...the center of Typhoon Champi (29W) was located\nnear latitude 12.6N...longitude 146.7E. This was about 140 miles\neast-southeast of Guam. Storm motion was west, 280 degrees, at 15\nmph. Storm intensity was 130 mph. This general forecast track\nwill take Champi just south of Guam as a Category 4 typhoon as it\nintensifies further the next few days.\n\n.SITUATION OVERVIEW...\nTyphoon Champi (29W) has been undergoing rapid intensification\ntoday. As a result it is now a dangerous category 4 typhoon. It is\nexpected to pass a little south of Guam as a super typhoon within\nthe next 12 hours. This may potentially bring devastating wind\nconditions to much of Guam during passage.\n\n.PRECAUTIONARY/PREPAREDNESS ACTIONS...", "instruction": "Dangerous typhoon conditions will soon occur. Everyone should be\nquickly moving to safety within their home or shelter. Once\ninside, ensure all windows and doors are secured before dangerous\nwinds arrive. Move to an interior room on the lowest floor.\n\nDo not go outside into the eye of typhoons. Within the eye,\nconditions can become temporarily calm, which can be misleading.\nOnce the eye passes, the winds will change direction and quickly\nincrease again to dangerous speeds.\n\nBe aware that the loss of commercial power can happen quickly.\nKeep emergency gear handy.", "url": "https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.9a5870c872448e6423b4191a0b6d1863ee7a2d3a.001.1", "source": "nws", "sourceName": "NOAA NWS" }
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Saved by us
17 October 2026 at 05:17 UTC
Version 5
7 recorded details changed
Title
Before
Typhoon Warning issued October 17 at 9:13AM ChST by NWS Tiyan GU
After
Typhoon Warning issued October 17 at 3:06PM ChST by NWS Tiyan GU
Source updated
Before
16 October 2026 at 23:13 UTC
After
17 October 2026 at 05:06 UTC
Effective from
Before
16 October 2026 at 23:13 UTC
After
17 October 2026 at 05:06 UTC
Forecast onset
Before
16 October 2026 at 23:13 UTC
After
17 October 2026 at 05:06 UTC
Message expiry
Before
17 October 2026 at 08:00 UTC
After
17 October 2026 at 13:15 UTC
Official description
Before
...TYPHOON CHAMPI MOVING WEST-NORTHWEST TOWARDS GUAM... .NEW INFORMATION... Champi upgraded to a typhoon. .AREAS AFFECTED... This local statement provides information and recommended actions for people on Guam, and on Rota, Tinian and Saipan in the Northern Marianas. .WATCHES/WARNINGS... A Typhoon Warning continues for Guam and Rota. A Tropical Storm Warning in conjuction with a Typhoon Watch continue for Tinian and Saipan. A Coastal Flood Warning is in effect for Guam, Rota, Tinian and Saipan. A Flood Watch is in effect for all of Guam and the Northern Marianas. Please listen closely for any Flash Flood Warnings that might be in effect for your area. Please check the latest public and marine forecasts for detailed information about additional hazards. .STORM INFORMATION... At 700 AM ChST, the center of Typhoon Champi (29W) was located near latitude 12.0N and longitude 149.6E. This was about 340 miles east- southeast of Guam. Storm motion was west-northwest, 295 degrees, at 15 mph. Storm intensity was 85 mph. The system is expected to further intensify today, with rapid intensification likely as Champi approaches the Marianas. This general forecast track will take Champi just south of Guam as a category 3 typhoon. .SITUATION OVERVIEW... Showers and winds will steadily increase this afternoon, and then deteriorate significantly from tonight as newly upgraded Typhoon Champi continues to move in from the east-southeast. Champi is expected to go through a period of rapid intensification shortly, strengthening further as the day goes on. Winds and rain will come in rapidly, with winds becoming dangerous and life threatening very soon after onset. Do not let a false sense of normalcy now dictate your actions tomorrow; prepare NOW!
After
...CHAMPI UPGRADED TO TYPHOON AND BARRELING TOWARD THE MARIANAS... .NEW INFORMATION... None. .AREAS AFFECTED... This local statement provides information and recommended action for people on Guam, and people on Rota, Tinian and Saipan in the Commonwealth of the Northern Marianas. .Watches/Warnings... A Typhoon Warning continues for Guam and Rota. A Tropical Storm Warning and a Typhoon Watch continue for Tinian and Saipan. A Flood Watch is in effect for all of Guam and the Northern Marianas. Please listen closely for any Flood Warnings that might be in effect for your area. Please check the latest public and marine forecasts for detailed information about additional hazards. .STORM INFORMATION... At 100 PM ChST, the center of Typhoon Champi (29W) was located near latitude 12.5N and longitude 148.0E. This was about 225 miles east- southeast of Guam. Storm motion was west-northwest, 290 degrees, at 18 mph. Storm intensity has increased to 100 mph, making it a Category 2 typhoon. This general forecast track will take Champi just south of Guam as a Category 3 typhoon as it intensifies further the next few days. .SITUATION OVERVIEW... Showers and winds will continue to steadily increase the rest of today, to then deteriorate significantly tonight as newly upgraded Typhoon Champi continues to move in from the east-southeast. Champi is undergoing a period of rapid intensification, strengthening further as the day goes on. The most recent storm tracks continue to indicate Champi passing either south, or over, Guam Sunday morning, which may potentially bring devastating wind conditions to much of Guam during passage. Winds and rain will come in rapidly, with winds becoming dangerous and life threatening very soon after onset. Do not let a false sense of normalcy now dictate your actions tomorrow; prepare NOW!
External source link
Before
https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.72709b808056f6ef1d8e7631ce1c34eba52dcab0.001.1
After
https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.f3ac425658ce0c4107e5c8d6fda782a704256e61.001.1
Bulletin issued: 17 October 2026 at 05:06 UTC
View saved version 5
Original saved fields, unchanged. This is our record, not an archived copy of the external webpage.
{ "id": "nws:9dfc27ac884969d70242491c", "authorityId": "urn:oid:2.49.0.1.840.0.f3ac425658ce0c4107e5c8d6fda782a704256e61.001.1", "sender": "w-nws.webmaster@noaa.gov", "references": [ { "identifier": "urn:oid:2.49.0.1.840.0.72709b808056f6ef1d8e7631ce1c34eba52dcab0.001.1", "sender": "w-nws.webmaster@noaa.gov" } ], "category": "weather", "title": "Typhoon Warning issued October 17 at 3:06PM ChST by NWS Tiyan GU", "eventType": "Typhoon Warning", "occurredAt": "2026-10-17T05:06:00.000Z", "issuedAt": "2026-10-17T05:06:00.000Z", "timeBasis": "Bulletin issued", "effectiveAt": "2026-10-17T05:06:00.000Z", "onsetAt": "2026-10-17T05:06:00.000Z", "expiresAt": "2026-10-17T13:15:00.000Z", "forecastEndAt": null, "severity": "Extreme", "urgency": "Immediate", "certainty": "Likely", "messageType": "Update", "status": "Source update", "place": "Guam", "coordinates": null, "issuer": "NWS Tiyan GU", "summary": "Typhoon Warning · Guam. Extreme; likely; urgency: immediate.", "description": "...CHAMPI UPGRADED TO TYPHOON AND BARRELING TOWARD THE MARIANAS...\n\n.NEW INFORMATION...\nNone.\n\n.AREAS AFFECTED...\nThis local statement provides information and recommended action for\npeople on Guam, and people on Rota, Tinian and Saipan in the\nCommonwealth of the Northern Marianas.\n\n.Watches/Warnings...\nA Typhoon Warning continues for Guam and Rota.\n\nA Tropical Storm Warning and a Typhoon Watch continue for Tinian and\nSaipan.\n\nA Flood Watch is in effect for all of Guam and the Northern\nMarianas. Please listen closely for any Flood Warnings that might\nbe in effect for your area.\n\nPlease check the latest public and marine forecasts for detailed\ninformation about additional hazards.\n\n.STORM INFORMATION...\nAt 100 PM ChST, the center of Typhoon Champi (29W) was located near\nlatitude 12.5N and longitude 148.0E. This was about 225 miles east-\nsoutheast of Guam. Storm motion was west-northwest, 290 degrees,\nat 18 mph. Storm intensity has increased to 100 mph, making it a\nCategory 2 typhoon. This general forecast track will take Champi\njust south of Guam as a Category 3 typhoon as it intensifies\nfurther the next few days.\n\n.SITUATION OVERVIEW...\nShowers and winds will continue to steadily increase the rest of\ntoday, to then deteriorate significantly tonight as newly upgraded\nTyphoon Champi continues to move in from the east-southeast. Champi\nis undergoing a period of rapid intensification, strengthening\nfurther as the day goes on. The most recent storm tracks continue to\nindicate Champi passing either south, or over, Guam Sunday morning,\nwhich may potentially bring devastating wind conditions to much of\nGuam during passage. Winds and rain will come in rapidly, with winds\nbecoming dangerous and life threatening very soon after onset. Do not\nlet a false sense of normalcy now dictate your actions tomorrow;\nprepare NOW!", "instruction": "Make the final preparations to protect life and property. Rush to\ncompletion the hardening of your home or business by closing shutters\nand bracing garage doors.\n\nIf evacuating, leave as soon as possible. Guard against being stuck\nout on roadways when dangerous winds and heavy rains arrive. Again,\ndo not stay in a metal roof or container home. Remember, pets are not\nallowed in most official shelters, so check ahead with your intended\nshelter.\n\nIf staying in a home, turn the refrigerator to maximum cold and keep\nit closed. Turn off propane tanks and unplug small appliances. Fill\nthe bathtub with water in case the tap water becomes unavailable\nafter the storm. This is for cleaning and flushing purposes. Do not\ndrink it.", "url": "https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.f3ac425658ce0c4107e5c8d6fda782a704256e61.001.1", "source": "nws", "sourceName": "NOAA NWS" }
Visit the external source ↗
The external page may have changed since this version was saved.
Saved by us
16 October 2026 at 23:17 UTC
Version 4
8 recorded details changed
Title
Before
Typhoon Warning issued October 17 at 3:03AM ChST by NWS Tiyan GU
After
Typhoon Warning issued October 17 at 9:13AM ChST by NWS Tiyan GU
Source updated
Before
16 October 2026 at 17:03 UTC
After
16 October 2026 at 23:13 UTC
Effective from
Before
16 October 2026 at 17:03 UTC
After
16 October 2026 at 23:13 UTC
Forecast onset
Before
16 October 2026 at 17:03 UTC
After
16 October 2026 at 23:13 UTC
Message expiry
Before
17 October 2026 at 01:15 UTC
After
17 October 2026 at 08:00 UTC
Official description
Before
...TROPICAL STORM CHAMPI MOVING WEST TOWARD GUAM... .NEW INFORMATION... None. .AREAS AFFECTED... This local statement provides information and recommended actions for people on Guam and on Rota, Tinian and Saipan in the Northern Marianas. .Watches/Warnings... A Typhoon Warning continues for Guam and Rota. A Tropical storm warning and a Typhoon Watch continues for Tinian and Saipan. A Flood Watch is in effect for all of Guam and the Northern Marianas. Please listen closely for any Flood Warnings that might be in effect for your area. Please check the latest public and marine forecasts for detailed information about additional hazards. .STORM INFORMATION... At 1 AM ChST...the center of Tropical Storm Champi (29W) was located near latitude 11.6N...longitude 150.8E. This was about 420 miles east-southeast of Guam. Storm motion was west, 275 degrees, at 15 mph. Storm intensity was 70 mph. .SITUATION OVERVIEW... TS Champi continues to head toward Guam. Along the way, Rota will be affected by lesser but still damaging winds toward the outside of Champi. Tinian and Saipan will be just grazed by the edge. .PRECAUTIONARY/PREPAREDNESS ACTIONS...
After
...TYPHOON CHAMPI MOVING WEST-NORTHWEST TOWARDS GUAM... .NEW INFORMATION... Champi upgraded to a typhoon. .AREAS AFFECTED... This local statement provides information and recommended actions for people on Guam, and on Rota, Tinian and Saipan in the Northern Marianas. .WATCHES/WARNINGS... A Typhoon Warning continues for Guam and Rota. A Tropical Storm Warning in conjuction with a Typhoon Watch continue for Tinian and Saipan. A Coastal Flood Warning is in effect for Guam, Rota, Tinian and Saipan. A Flood Watch is in effect for all of Guam and the Northern Marianas. Please listen closely for any Flash Flood Warnings that might be in effect for your area. Please check the latest public and marine forecasts for detailed information about additional hazards. .STORM INFORMATION... At 700 AM ChST, the center of Typhoon Champi (29W) was located near latitude 12.0N and longitude 149.6E. This was about 340 miles east- southeast of Guam. Storm motion was west-northwest, 295 degrees, at 15 mph. Storm intensity was 85 mph. The system is expected to further intensify today, with rapid intensification likely as Champi approaches the Marianas. This general forecast track will take Champi just south of Guam as a category 3 typhoon. .SITUATION OVERVIEW... Showers and winds will steadily increase this afternoon, and then deteriorate significantly from tonight as newly upgraded Typhoon Champi continues to move in from the east-southeast. Champi is expected to go through a period of rapid intensification shortly, strengthening further as the day goes on. Winds and rain will come in rapidly, with winds becoming dangerous and life threatening very soon after onset. Do not let a false sense of normalcy now dictate your actions tomorrow; prepare NOW!
Official instructions
Before
Make the final preparations to protect life and property. Rush to completion the hardening of your home or business by closing shutters and bracing garage doors. If evacuating, leave as soon as possible. Guard against being stuck out on roadways when dangerous winds and heavy rains arrive. Again, do not stay in a metal roof or container home. Remember, pets are not allowed in most official shelters, so check ahead with your intended shelter. If staying in a home, turn the refrigerator to maximum cold and keep it closed. Turn off propane tanks and unplug small appliances. Fill the bathtub with water in case the tap water becomes unavailable after the storm. This is for cleaning and flushing purposes. Do not drink it.
After
Make the final preparations to protect life and property. Rush to completion the hardening of your home or business by closing shutters and bracing garage doors. If evacuating, leave as soon as possible. Guard against being stuck out on roadways when dangerous winds and heavy rains arrive. Again, do not stay in a metal roof or container home. Remember, pets are not allowed in most official shelters, so check ahead with your intended shelter. If staying in a home, turn the refrigerator to maximum cold and keep it closed. Turn off propane tanks and unplug small appliances. Fill the bathtub with water in case the tap water becomes unavailable after the storm. This is for cleaning and flushing purposes. Do not drink it.
External source link
Before
https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.0ee6a7519bf9283a0c3ce63c2b1c084561cadc09.001.1
After
https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.72709b808056f6ef1d8e7631ce1c34eba52dcab0.001.1
Bulletin issued: 16 October 2026 at 23:13 UTC
View saved version 4
Original saved fields, unchanged. This is our record, not an archived copy of the external webpage.
{ "id": "nws:9d265cb28b75331657fb4dc9", "authorityId": "urn:oid:2.49.0.1.840.0.72709b808056f6ef1d8e7631ce1c34eba52dcab0.001.1", "sender": "w-nws.webmaster@noaa.gov", "references": [ { "identifier": "urn:oid:2.49.0.1.840.0.0ee6a7519bf9283a0c3ce63c2b1c084561cadc09.001.1", "sender": "w-nws.webmaster@noaa.gov" } ], "category": "weather", "title": "Typhoon Warning issued October 17 at 9:13AM ChST by NWS Tiyan GU", "eventType": "Typhoon Warning", "occurredAt": "2026-10-16T23:13:00.000Z", "issuedAt": "2026-10-16T23:13:00.000Z", "timeBasis": "Bulletin issued", "effectiveAt": "2026-10-16T23:13:00.000Z", "onsetAt": "2026-10-16T23:13:00.000Z", "expiresAt": "2026-10-17T08:00:00.000Z", "forecastEndAt": null, "severity": "Extreme", "urgency": "Immediate", "certainty": "Likely", "messageType": "Update", "status": "Source update", "place": "Guam", "coordinates": null, "issuer": "NWS Tiyan GU", "summary": "Typhoon Warning · Guam. Extreme; likely; urgency: immediate.", "description": "...TYPHOON CHAMPI MOVING WEST-NORTHWEST TOWARDS GUAM...\n\n.NEW INFORMATION...\nChampi upgraded to a typhoon.\n\n.AREAS AFFECTED...\nThis local statement provides information and recommended actions for\npeople on Guam, and on Rota, Tinian and Saipan in the Northern\nMarianas.\n\n.WATCHES/WARNINGS...\nA Typhoon Warning continues for Guam and Rota.\nA Tropical Storm Warning in conjuction with a Typhoon Watch continue\nfor Tinian and Saipan.\nA Coastal Flood Warning is in effect for Guam, Rota, Tinian and\nSaipan.\n\nA Flood Watch is in effect for all of Guam and the Northern\nMarianas. Please listen closely for any Flash Flood Warnings that\nmight be in effect for your area.\n\nPlease check the latest public and marine forecasts for detailed\ninformation about additional hazards.\n\n.STORM INFORMATION...\nAt 700 AM ChST, the center of Typhoon Champi (29W) was located near\nlatitude 12.0N and longitude 149.6E. This was about 340 miles east-\nsoutheast of Guam. Storm motion was west-northwest, 295 degrees, at\n15 mph. Storm intensity was 85 mph. The system is expected to further\nintensify today, with rapid intensification likely as Champi\napproaches the Marianas. This general forecast track will take\nChampi just south of Guam as a category 3 typhoon.\n\n.SITUATION OVERVIEW...\nShowers and winds will steadily increase this afternoon, and then\ndeteriorate significantly from tonight as newly upgraded Typhoon\nChampi continues to move in from the east-southeast. Champi is\nexpected to go through a period of rapid intensification shortly,\nstrengthening further as the day goes on. Winds and rain will come\nin rapidly, with winds becoming dangerous and life threatening very\nsoon after onset. Do not let a false sense of normalcy now dictate\nyour actions tomorrow; prepare NOW!", "instruction": "Make the final preparations to protect life and property. Rush to\ncompletion the hardening of your home or business by closing shutters\nand bracing garage doors.\n\nIf evacuating, leave as soon as possible. Guard against being stuck\nout on roadways when dangerous winds and heavy rains arrive. Again,\ndo not stay in a metal roof or container home. Remember, pets are not\nallowed in most official shelters, so check ahead with your intended\nshelter.\n\nIf staying in a home, turn the refrigerator to maximum cold and keep\nit closed. Turn off propane tanks and unplug small appliances. Fill\nthe bathtub with water in case the tap water becomes unavailable\nafter the storm. This is for cleaning and flushing purposes. Do not\ndrink it.", "url": "https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.72709b808056f6ef1d8e7631ce1c34eba52dcab0.001.1", "source": "nws", "sourceName": "NOAA NWS" }
Visit the external source ↗
The external page may have changed since this version was saved.
Saved by us
16 October 2026 at 17:17 UTC
Version 3
7 recorded details changed
Title
Before
Typhoon Warning issued October 16 at 9:43PM ChST by NWS Tiyan GU
After
Typhoon Warning issued October 17 at 3:03AM ChST by NWS Tiyan GU
Source updated
Before
16 October 2026 at 11:43 UTC
After
16 October 2026 at 17:03 UTC
Effective from
Before
16 October 2026 at 11:43 UTC
After
16 October 2026 at 17:03 UTC
Forecast onset
Before
16 October 2026 at 11:43 UTC
After
16 October 2026 at 17:03 UTC
Message expiry
Before
16 October 2026 at 19:45 UTC
After
17 October 2026 at 01:15 UTC
Official description
Before
...TROPICAL STORM CHAMPI INTENSIFYING AND MOVING WEST TOWARDS THE MARIANAS... ...CHAMPI LIKELY TO MOVE NEAR GUAM AS A TYPHOON... .NEW INFORMATION... Guam was placed in Condition of Readiness 2 as of 1 PM ChST. .AREAS AFFECTED... This local statement provides information and recommended actions for people on Guam and on Rota, Tinian and Saipan in the Northern Marianas. .Watches/Warnings... A Typhoon Warning continues for Guam and Rota. A Tropical storm warning and a Typhoon Watch continue for Tinian and Saipan. A Flood Watch is in effect for all of Guam and the Northern Marianas. Please listen closely for any Flood Warnings that might be in effect for your area. Please check the latest public and marine forecasts for detailed information about additional hazards. .STORM INFORMATION... At 8 PM ChST...the center of Tropical Storm Champi (29W) was located near latitude 11.6N...longitude 152.1E. This was about 510 miles east-southeast of Guam. Storm motion was west, 275 degrees, at 13 mph. Storm intensity was 60 mph. .SITUATION OVERVIEW... TS Champi continues to head toward Guam. Along the way, Rota will be affected by lesser bu…
After
...TROPICAL STORM CHAMPI MOVING WEST TOWARD GUAM... .NEW INFORMATION... None. .AREAS AFFECTED... This local statement provides information and recommended actions for people on Guam and on Rota, Tinian and Saipan in the Northern Marianas. .Watches/Warnings... A Typhoon Warning continues for Guam and Rota. A Tropical storm warning and a Typhoon Watch continues for Tinian and Saipan. A Flood Watch is in effect for all of Guam and the Northern Marianas. Please listen closely for any Flood Warnings that might be in effect for your area. Please check the latest public and marine forecasts for detailed information about additional hazards. .STORM INFORMATION... At 1 AM ChST...the center of Tropical Storm Champi (29W) was located near latitude 11.6N...longitude 150.8E. This was about 420 miles east-southeast of Guam. Storm motion was west, 275 degrees, at 15 mph. Storm intensity was 70 mph. .SITUATION OVERVIEW... TS Champi continues to head toward Guam. Along the way, Rota will be affected by lesser bu…
External source link
Before
https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.f1dfdbd64986b09a5958ed031fd82e95a9442522.001.1
After
https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.0ee6a7519bf9283a0c3ce63c2b1c084561cadc09.001.1
Bulletin issued: 16 October 2026 at 17:03 UTC
View saved version 3
Original saved fields, unchanged. This is our record, not an archived copy of the external webpage.
{ "id": "nws:7aa79113f202340e5d47e892", "authorityId": "urn:oid:2.49.0.1.840.0.0ee6a7519bf9283a0c3ce63c2b1c084561cadc09.001.1", "sender": "w-nws.webmaster@noaa.gov", "references": [ { "identifier": "urn:oid:2.49.0.1.840.0.f1dfdbd64986b09a5958ed031fd82e95a9442522.001.1", "sender": "w-nws.webmaster@noaa.gov" } ], "category": "weather", "title": "Typhoon Warning issued October 17 at 3:03AM ChST by NWS Tiyan GU", "eventType": "Typhoon Warning", "occurredAt": "2026-10-16T17:03:00.000Z", "issuedAt": "2026-10-16T17:03:00.000Z", "timeBasis": "Bulletin issued", "effectiveAt": "2026-10-16T17:03:00.000Z", "onsetAt": "2026-10-16T17:03:00.000Z", "expiresAt": "2026-10-17T01:15:00.000Z", "forecastEndAt": null, "severity": "Extreme", "urgency": "Immediate", "certainty": "Likely", "messageType": "Update", "status": "Source update", "place": "Guam", "coordinates": null, "issuer": "NWS Tiyan GU", "summary": "Typhoon Warning · Guam. Extreme; likely; urgency: immediate.", "description": "...TROPICAL STORM CHAMPI MOVING WEST TOWARD GUAM...\n\n.NEW INFORMATION...\nNone.\n\n.AREAS AFFECTED...\nThis local statement provides information and recommended actions for\npeople on Guam and on Rota, Tinian and Saipan in the Northern\nMarianas.\n\n.Watches/Warnings...\nA Typhoon Warning continues for Guam and Rota.\n\nA Tropical storm warning and a Typhoon Watch continues for Tinian\nand Saipan.\n\nA Flood Watch is in effect for all of Guam and the Northern\nMarianas. Please listen closely for any Flood Warnings that might\nbe in effect for your area.\n\nPlease check the latest public and marine forecasts for detailed\ninformation about additional hazards.\n\n.STORM INFORMATION...\nAt 1 AM ChST...the center of Tropical Storm Champi (29W) was located\nnear latitude 11.6N...longitude 150.8E. This was about 420 miles\neast-southeast of Guam. Storm motion was west, 275 degrees, at 15 mph.\nStorm intensity was 70 mph.\n\n.SITUATION OVERVIEW...\nTS Champi continues to head toward Guam. Along the way, Rota will be\naffected by lesser but still damaging winds toward the outside of\nChampi. Tinian and Saipan will be just grazed by the edge.\n\n.PRECAUTIONARY/PREPAREDNESS ACTIONS...", "instruction": "Make the final preparations to protect life and property. Rush\nto completion the hardening of your home or business by closing\nshutters and bracing garage doors.\n\nIf evacuating, leave as soon as possible. Guard against being\nstuck out on roadways when dangerous winds and heavy rains\narrive. Again, do not stay in a metal roof or container home.\nRemember, pets are not allowed in most official shelters, so\ncheck ahead with your intended shelter.\n\nIf staying in a home, turn the refrigerator to maximum cold and\nkeep it closed. Turn off propane tanks and unplug small\nappliances. Fill the bathtub with water in case the tap water\nbecomes unavailable after the storm. This is for cleaning and\nflushing purposes. Do not drink it.", "url": "https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.0ee6a7519bf9283a0c3ce63c2b1c084561cadc09.001.1", "source": "nws", "sourceName": "NOAA NWS" }
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Saved by us
16 October 2026 at 11:47 UTC
Version 2
Source status changed
Title
Before
Typhoon Warning issued October 16 at 4:11PM ChST by NWS Tiyan GU
After
Typhoon Warning issued October 16 at 9:43PM ChST by NWS Tiyan GU
Source updated
Before
16 October 2026 at 06:11 UTC
After
16 October 2026 at 11:43 UTC
Effective from
Before
16 October 2026 at 06:11 UTC
After
16 October 2026 at 11:43 UTC
Forecast onset
Before
16 October 2026 at 06:11 UTC
After
16 October 2026 at 11:43 UTC
Message expiry
Before
16 October 2026 at 14:15 UTC
After
16 October 2026 at 19:45 UTC
Message type
Before
Alert
After
Update
Source status
Before
Source alert
After
Source update
Official description
Before
...TROPICAL STORM CHAMPI MOVING RAPIDLY WEST ON APPROACH TO THE MARIANAS... ...CHAMPI LIKELY TO MOVE NEAR GUAM AND ROTA AS A TYPHOON... .NEW INFORMATION... A Typhoon Warning has been issued for Guam, Rota, and the adjacent waters. A Tropical Storm Warning has been issued for Tinian, Saipan, and the adjacent waters. .AREAS AFFECTED... This local statement provides information and recommended action for people on Guam, and people on Rota, Tinian and Saipan in the Commonwealth of the Northern Marianas. .WATCHES/WARNINGS... A Typhoon Warning is in effect for Guam and Rota. A Tropical Storm Warning is in effect for Tinian and Saipan. A Typhoon Watch continues for Tinian and Saipan. A Flood Watch is in effect for all of Guam and the Northern Marianas. Please listen closely for any Flood Warnings that might be in effect for your area. Please check the latest public and marine forecasts for detailed information about additional hazards. .STORM INFORMATION... At 200 PM ChST, the center of Tropical Storm Champi (29W) was located near latitude 11.4N and longitude 153.3E, about 300 miles north- northeast of Chuuk and about 590 miles east-southeast of Guam. Storm motion was west, 265 degrees, at 24 mph. Storm intensity was 50 mph. Champi will continue on this trajectory and slow down as it continues barreling toward the Marianas. This general forecast track will take Champi close to, or over, Guam Sunday morning. Champi is forecast to continue intensifying over the next few days, likely becoming a typhoon by Saturday. .SITUATION OVERVIEW... Mostly benign conditions are expected across the Marianas tonight, followed by a steady increase in showers and winds Friday afternoon, and then deteriorating significantly coming into Saturday night as Tropical Storm Champi continues to move in from the east-southeast. Champi is expected to go through a period of rapid intensification over the next 24 hours, becoming a typhoon by Saturday and strengthening further thereafter. Winds and rain will come in rapidly, with winds becoming dangerous and life threatening very soon after onset. Do not let a false sense of normalcy now dictate your actions tomorrow; prepare NOW!
After
...TROPICAL STORM CHAMPI INTENSIFYING AND MOVING WEST TOWARDS THE MARIANAS... ...CHAMPI LIKELY TO MOVE NEAR GUAM AS A TYPHOON... .NEW INFORMATION... Guam was placed in Condition of Readiness 2 as of 1 PM ChST. .AREAS AFFECTED... This local statement provides information and recommended actions for people on Guam and on Rota, Tinian and Saipan in the Northern Marianas. .Watches/Warnings... A Typhoon Warning continues for Guam and Rota. A Tropical storm warning and a Typhoon Watch continue for Tinian and Saipan. A Flood Watch is in effect for all of Guam and the Northern Marianas. Please listen closely for any Flood Warnings that might be in effect for your area. Please check the latest public and marine forecasts for detailed information about additional hazards. .STORM INFORMATION... At 8 PM ChST...the center of Tropical Storm Champi (29W) was located near latitude 11.6N...longitude 152.1E. This was about 510 miles east-southeast of Guam. Storm motion was west, 275 degrees, at 13 mph. Storm intensity was 60 mph. .SITUATION OVERVIEW... TS Champi continues to head toward Guam. Along the way, Rota will be affected by lesser but still damaging winds toward the outside of Champi. Tinian and Saipan will be just grazed by the edge. .PRECAUTIONARY/PREPAREDNESS ACTIONS...
Official instructions
Before
Take small loose objects indoors. Identify suitable shelter. Stock up a few days worth of food and water. If no concrete shelter is available look for a cave or something similar. Take action to protect food crops or other possessions as appropriate.
After
Make the final preparations to protect life and property. Rush to completion the hardening of your home or business by closing shutters and bracing garage doors. If evacuating, leave as soon as possible. Guard against being stuck out on roadways when dangerous winds and heavy rains arrive. Again, do not stay in a metal roof or container home. Remember, pets are not allowed in most official shelters, so check ahead with your intended shelter. If staying in a home, turn the refrigerator to maximum cold and keep it closed. Turn off propane tanks and unplug small appliances. Fill the bathtub with water in case the tap water becomes unavailable after the storm. This is for cleaning and flushing purposes. Do not drink it.
External source link
Before
https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.8b3ecad2910ecff02ba0338c6ab40c35cd21e03e.001.2
After
https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.f1dfdbd64986b09a5958ed031fd82e95a9442522.001.1
Bulletin issued: 16 October 2026 at 11:43 UTC
View saved version 2
Original saved fields, unchanged. This is our record, not an archived copy of the external webpage.
{ "id": "nws:b353090f37a0938f804a42bf", "authorityId": "urn:oid:2.49.0.1.840.0.f1dfdbd64986b09a5958ed031fd82e95a9442522.001.1", "sender": "w-nws.webmaster@noaa.gov", "references": [ { "identifier": "urn:oid:2.49.0.1.840.0.8b3ecad2910ecff02ba0338c6ab40c35cd21e03e.001.2", "sender": "w-nws.webmaster@noaa.gov" } ], "category": "weather", "title": "Typhoon Warning issued October 16 at 9:43PM ChST by NWS Tiyan GU", "eventType": "Typhoon Warning", "occurredAt": "2026-10-16T11:43:00.000Z", "issuedAt": "2026-10-16T11:43:00.000Z", "timeBasis": "Bulletin issued", "effectiveAt": "2026-10-16T11:43:00.000Z", "onsetAt": "2026-10-16T11:43:00.000Z", "expiresAt": "2026-10-16T19:45:00.000Z", "forecastEndAt": null, "severity": "Extreme", "urgency": "Immediate", "certainty": "Likely", "messageType": "Update", "status": "Source update", "place": "Guam", "coordinates": null, "issuer": "NWS Tiyan GU", "summary": "Typhoon Warning · Guam. Extreme; likely; urgency: immediate.", "description": "...TROPICAL STORM CHAMPI INTENSIFYING AND MOVING WEST TOWARDS THE\nMARIANAS...\n...CHAMPI LIKELY TO MOVE NEAR GUAM AS A TYPHOON...\n\n.NEW INFORMATION...\nGuam was placed in Condition of Readiness 2 as of 1 PM ChST.\n\n.AREAS AFFECTED...\nThis local statement provides information and recommended actions for\npeople on Guam and on Rota, Tinian and Saipan in the Northern\nMarianas.\n\n.Watches/Warnings...\nA Typhoon Warning continues for Guam and Rota.\n\nA Tropical storm warning and a Typhoon Watch continue for Tinian\nand Saipan.\n\nA Flood Watch is in effect for all of Guam and the Northern\nMarianas. Please listen closely for any Flood Warnings that might\nbe in effect for your area.\n\nPlease check the latest public and marine forecasts for detailed\ninformation about additional hazards.\n\n.STORM INFORMATION...\nAt 8 PM ChST...the center of Tropical Storm Champi (29W) was located\nnear latitude 11.6N...longitude 152.1E. This was about 510 miles\neast-southeast of Guam. Storm motion was west, 275 degrees, at 13 mph.\nStorm intensity was 60 mph.\n\n.SITUATION OVERVIEW...\nTS Champi continues to head toward Guam. Along the way, Rota will be\naffected by lesser but still damaging winds toward the outside of\nChampi. Tinian and Saipan will be just grazed by the edge.\n\n.PRECAUTIONARY/PREPAREDNESS ACTIONS...", "instruction": "Make the final preparations to protect life and property. Rush\nto completion the hardening of your home or business by closing\nshutters and bracing garage doors.\n\nIf evacuating, leave as soon as possible. Guard against being\nstuck out on roadways when dangerous winds and heavy rains\narrive. Again, do not stay in a metal roof or container home.\nRemember, pets are not allowed in most official shelters, so\ncheck ahead with your intended shelter.\n\nIf staying in a home, turn the refrigerator to maximum cold and\nkeep it closed. Turn off propane tanks and unplug small\nappliances. Fill the bathtub with water in case the tap water\nbecomes unavailable after the storm. This is for cleaning and\nflushing purposes. Do not drink it.", "url": "https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.f1dfdbd64986b09a5958ed031fd82e95a9442522.001.1", "source": "nws", "sourceName": "NOAA NWS" }
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First saved record · 16 October 2026 at 06:17 UTC

Saved by us

16 October 2026 at 06:17 UTC

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First saved record

Our first saved version of Typhoon Warning issued October 16 at 4:11PM ChST by NWS Tiyan GU. We have no earlier saved version to compare.

Bulletin issued: 16 October 2026 at 06:11 UTC

View saved version 1

Original saved fields, unchanged. This is our record, not an archived copy of the external webpage.

{
  "id": "nws:8b2b791514cfea255034a286",
  "authorityId": "urn:oid:2.49.0.1.840.0.8b3ecad2910ecff02ba0338c6ab40c35cd21e03e.001.2",
  "sender": "w-nws.webmaster@noaa.gov",
  "references": [],
  "category": "weather",
  "title": "Typhoon Warning issued October 16 at 4:11PM ChST by NWS Tiyan GU",
  "eventType": "Typhoon Warning",
  "occurredAt": "2026-10-16T06:11:00.000Z",
  "issuedAt": "2026-10-16T06:11:00.000Z",
  "timeBasis": "Bulletin issued",
  "effectiveAt": "2026-10-16T06:11:00.000Z",
  "onsetAt": "2026-10-16T06:11:00.000Z",
  "expiresAt": "2026-10-16T14:15:00.000Z",
  "forecastEndAt": null,
  "severity": "Extreme",
  "urgency": "Immediate",
  "certainty": "Likely",
  "messageType": "Alert",
  "status": "Source alert",
  "place": "Guam",
  "coordinates": null,
  "issuer": "NWS Tiyan GU",
  "summary": "Typhoon Warning · Guam. Extreme; likely; urgency: immediate.",
  "description": "...TROPICAL STORM CHAMPI MOVING RAPIDLY WEST ON APPROACH TO THE\nMARIANAS...\n...CHAMPI LIKELY TO MOVE NEAR GUAM AND ROTA AS A TYPHOON...\n\n.NEW INFORMATION...\nA Typhoon Warning has been issued for Guam, Rota, and the adjacent\nwaters.\nA Tropical Storm Warning has been issued for Tinian, Saipan, and the\nadjacent waters.\n\n.AREAS AFFECTED...\nThis local statement provides information and recommended action for\npeople on Guam, and people on Rota, Tinian and Saipan in the\nCommonwealth of the Northern Marianas.\n\n.WATCHES/WARNINGS...\nA Typhoon Warning is in effect for Guam and Rota.\nA Tropical Storm Warning is in effect for Tinian and Saipan.\nA Typhoon Watch continues for Tinian and Saipan.\n\nA Flood Watch is in effect for all of Guam and the Northern Marianas.\nPlease listen closely for any Flood Warnings that might be in effect\nfor your area.\n\nPlease check the latest public and marine forecasts for detailed\ninformation about additional hazards.\n\n.STORM INFORMATION...\nAt 200 PM ChST, the center of Tropical Storm Champi (29W) was located\nnear latitude 11.4N and longitude 153.3E, about 300 miles north-\nnortheast of Chuuk and about 590 miles east-southeast of Guam. Storm\nmotion was west, 265 degrees, at 24 mph. Storm intensity was 50 mph.\nChampi will continue on this trajectory and slow down as it continues\nbarreling toward the Marianas. This general forecast track will take\nChampi close to, or over, Guam Sunday morning. Champi is forecast to\ncontinue intensifying over the next few days, likely becoming a\ntyphoon by Saturday.\n\n.SITUATION OVERVIEW...\nMostly benign conditions are expected across the Marianas tonight,\nfollowed by a steady increase in showers and winds Friday afternoon,\nand then deteriorating significantly coming into Saturday night as\nTropical Storm Champi continues to move in from the east-southeast.\nChampi is expected to go through a period of rapid intensification\nover the next 24 hours, becoming a typhoon by Saturday and\nstrengthening further thereafter. Winds and rain will come in\nrapidly, with winds becoming dangerous and life threatening very soon\nafter onset. Do not let a false sense of normalcy now dictate your\nactions tomorrow; prepare NOW!",
  "instruction": "Take small loose objects indoors. Identify suitable shelter. Stock up\na few days worth of food and water. If no concrete shelter is\navailable look for a cave or something similar. Take action to\nprotect food crops or other possessions as appropriate.",
  "url": "https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.8b3ecad2910ecff02ba0338c6ab40c35cd21e03e.001.2",
  "source": "nws",
  "sourceName": "NOAA NWS"
}

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Typhoon Warning issued October 18 at 3:01PM ChST by NWS Tiyan GU

Archived official description

Instructions in this archived message

What changed

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First saved record