NOAA NWS / Event history

Extreme Wind Warning issued October 18 at 3:26AM ChST until October 18 at 5:30AM ChST by NWS Tiyan GU

Extreme Wind Warning · Guam, GU. Extreme; observed; urgency: immediate.

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Bulletin issued: 17 October 2026 at 17:52 UTC
First saved by us: 17 October 2026 at 18:02 UTC
Last included in a daily record: 17 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 alert

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, GU
Certainty / urgency: Observed / Immediate
Message expiry (not hazard end): 17 October 2026 at 19:30 UTC
Forecast onset / end: 17 October 2026 at 17:52 UTC / 17 October 2026 at 19:30 UTC

Archived official description

EWWGUM The National Weather Service in Tiyan Guam has issued a * Extreme Wind Warning for... Southern Guam in Guam... * Until 530 AM ChST. * At 326 AM ChST, Andersen AFB Doppler radar indicated extreme winds, associated with the northern eyewall of Typhoon Champi, were moving onshore from Talofofo southward, moving west at 15 mph. THIS IS AN EXTREMELY DANGEROUS AND LIFE-THREATENING SITUATION! * Locations impacted include... Talofofo, Inarajan, Merizo, Santa Rita, and Umatac.

Instructions in this archived message

Destructive winds of 115 to 135 mph will spread across far southern Guam, producing swaths of significant to catastrophic damage, particularly to non-concrete structures. TAKE COVER NOW! The safest place to be during a major typhoon passage is in a reinforced interior room away from windows. If you are not in a fully-concrete structure, get under a table or other piece of sturdy furniture. Use mattresses, blankets or pillows to cover your head and body. Remain in place through the passage of these life-threatening conditions.

The saved record

What changed

0 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.

First saved record · 17 October 2026 at 18:02 UTC

Saved by us

17 October 2026 at 18:02 UTC

Starting point

First saved record

Our first saved version of Extreme Wind Warning issued October 18 at 3:26AM ChST until October 18 at 5:30AM ChST by NWS Tiyan GU. We have no earlier saved version to compare.

Bulletin issued: 17 October 2026 at 17:52 UTC

View saved version 1

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

{
  "id": "nws:0737de229485c10e80e6d417",
  "authorityId": "urn:oid:2.49.0.1.840.0.8468c9e23c65373970e3f8d8cf2cb7ea132e662b.001.1",
  "sender": "w-nws.webmaster@noaa.gov",
  "references": [],
  "category": "weather",
  "title": "Extreme Wind Warning issued October 18 at 3:26AM ChST until October 18 at 5:30AM ChST by NWS Tiyan GU",
  "eventType": "Extreme Wind Warning",
  "occurredAt": "2026-10-17T17:52:00.000Z",
  "issuedAt": "2026-10-17T17:52:00.000Z",
  "timeBasis": "Bulletin issued",
  "effectiveAt": "2026-10-17T17:26:00.000Z",
  "onsetAt": "2026-10-17T17:52:00.000Z",
  "expiresAt": "2026-10-17T19:30:00.000Z",
  "forecastEndAt": "2026-10-17T19:30:00.000Z",
  "severity": "Extreme",
  "urgency": "Immediate",
  "certainty": "Observed",
  "messageType": "Alert",
  "status": "Source alert",
  "place": "Guam, GU",
  "coordinates": null,
  "issuer": "NWS Tiyan GU",
  "summary": "Extreme Wind Warning · Guam, GU. Extreme; observed; urgency: immediate.",
  "description": "EWWGUM\n\nThe National Weather Service in Tiyan Guam has issued a\n\n* Extreme Wind Warning for...\nSouthern Guam in Guam...\n\n* Until 530 AM ChST.\n\n* At 326 AM ChST, Andersen AFB Doppler radar indicated extreme\nwinds, associated with the northern eyewall of Typhoon Champi,\nwere moving onshore from Talofofo southward, moving west at 15\nmph. THIS IS AN EXTREMELY DANGEROUS AND LIFE-THREATENING SITUATION!\n\n* Locations impacted include...\nTalofofo, Inarajan, Merizo, Santa Rita, and Umatac.",
  "instruction": "Destructive winds of 115 to 135 mph will spread across far southern\nGuam, producing swaths of significant to catastrophic damage,\nparticularly to non-concrete structures.\n\nTAKE COVER NOW! The safest place to be during a major typhoon\npassage is in a reinforced interior room away from windows. If you\nare not in a fully-concrete structure, get under a table or other\npiece of sturdy furniture. Use mattresses, blankets or pillows to\ncover your head and body. Remain in place through the passage of\nthese life-threatening conditions.",
  "url": "https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.8468c9e23c65373970e3f8d8cf2cb7ea132e662b.001.1",
  "source": "nws",
  "sourceName": "NOAA NWS"
}

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