NOAA NWS / Event history

Severe Thunderstorm Warning issued October 13 at 6:27PM CDT until October 13 at 6:30PM CDT by NWS Norman OK

Severe Thunderstorm Warning · Harper, OK; Woodward, OK. Severe; observed; urgency: immediate.

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Bulletin issued: 13 October 2026 at 23:27 UTC
First saved by us: 13 October 2026 at 22:43 UTC
Last included in a daily record: 13 October 2026
The linked daily edition preserves what we captured that UTC day; this event page is not a live warning.
Source classification: Severe · 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 Norman OK · Harper, OK; Woodward, OK
Certainty / urgency: Observed / Immediate
Message expiry (not hazard end): 13 October 2026 at 23:36 UTC
Forecast onset / end: 13 October 2026 at 23:27 UTC / 13 October 2026 at 23:30 UTC

Archived official description

The storm which prompted the warning has weakened below severe limits, therefore the warning will be allowed to expire. However, other severe thunderstorms are affecting other portions of Harper County and Severe Thunderstorm Warnings remain in effect in Harper County.

The saved record

What changed

2 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 2 changes

Saved by us
13 October 2026 at 23:28 UTC
Version 3
8 recorded details changed
Title
Before
Severe Thunderstorm Warning issued October 13 at 5:59PM CDT until October 13 at 6:30PM CDT by NWS Norman OK
After
Severe Thunderstorm Warning issued October 13 at 6:27PM CDT until October 13 at 6:30PM CDT by NWS Norman OK
Source updated
Before
13 October 2026 at 22:59 UTC
After
13 October 2026 at 23:27 UTC
Effective from
Before
13 October 2026 at 22:59 UTC
After
13 October 2026 at 23:27 UTC
Forecast onset
Before
13 October 2026 at 22:59 UTC
After
13 October 2026 at 23:27 UTC
Message expiry
Before
13 October 2026 at 23:30 UTC
After
13 October 2026 at 23:36 UTC
Official description
Before
At 557 PM CDT, a severe thunderstorm was located 6 miles southeast of Fort Supply, moving northeast at 30 mph. HAZARD...60 mph wind gusts and half dollar size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. Locations impacted include... Woodward, Fort Supply, and Tangier.
After
The storm which prompted the warning has weakened below severe limits, therefore the warning will be allowed to expire. However, other severe thunderstorms are affecting other portions of Harper County and Severe Thunderstorm Warnings remain in effect in Harper County.
Official instructions
Before
~~For your protection move to an interior room on the lowest floor of a building.~~
After
Not supplied
External source link
Before
https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.19c545c77b3ba928d5a9a930c05448f2365235f6.002.1
After
https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.df95795ab76bb76e18cf135ecf15193faaf555f5.001.1
Bulletin issued: 13 October 2026 at 23:27 UTC
View saved version 3
Original saved fields, unchanged. This is our record, not an archived copy of the external webpage.
{ "id": "nws:175e5e4f493dde8be6390770", "authorityId": "urn:oid:2.49.0.1.840.0.df95795ab76bb76e18cf135ecf15193faaf555f5.001.1", "sender": "w-nws.webmaster@noaa.gov", "references": [ { "identifier": "urn:oid:2.49.0.1.840.0.8be3ab3ec1dc3e25a8928eb55f36fbb13254202c.001.1", "sender": "w-nws.webmaster@noaa.gov" }, { "identifier": "urn:oid:2.49.0.1.840.0.19c545c77b3ba928d5a9a930c05448f2365235f6.002.1", "sender": "w-nws.webmaster@noaa.gov" } ], "category": "weather", "title": "Severe Thunderstorm Warning issued October 13 at 6:27PM CDT until October 13 at 6:30PM CDT by NWS Norman OK", "eventType": "Severe Thunderstorm Warning", "occurredAt": "2026-10-13T23:27:00.000Z", "issuedAt": "2026-10-13T23:27:00.000Z", "timeBasis": "Bulletin issued", "effectiveAt": "2026-10-13T23:27:00.000Z", "onsetAt": "2026-10-13T23:27:00.000Z", "expiresAt": "2026-10-13T23:36:00.000Z", "forecastEndAt": "2026-10-13T23:30:00.000Z", "severity": "Severe", "urgency": "Immediate", "certainty": "Observed", "messageType": "Update", "status": "Source update", "place": "Harper, OK; Woodward, OK", "coordinates": null, "issuer": "NWS Norman OK", "summary": "Severe Thunderstorm Warning · Harper, OK; Woodward, OK. Severe; observed; urgency: immediate.", "description": "The storm which prompted the warning has weakened below severe\nlimits, therefore the warning will be allowed to expire. However,\nother severe thunderstorms are affecting other portions of Harper\nCounty and Severe Thunderstorm Warnings remain in effect in Harper\nCounty.", "instruction": "", "url": "https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.df95795ab76bb76e18cf135ecf15193faaf555f5.001.1", "source": "nws", "sourceName": "NOAA NWS" }
Visit the external source ↗
The external page may have changed since this version was saved.
Saved by us
13 October 2026 at 23:13 UTC
Version 2
Source status changed
Title
Before
Severe Thunderstorm Warning issued October 13 at 5:39PM CDT until October 13 at 6:30PM CDT by NWS Norman OK
After
Severe Thunderstorm Warning issued October 13 at 5:59PM CDT until October 13 at 6:30PM CDT by NWS Norman OK
Source updated
Before
13 October 2026 at 22:39 UTC
After
13 October 2026 at 22:59 UTC
Effective from
Before
13 October 2026 at 22:39 UTC
After
13 October 2026 at 22:59 UTC
Forecast onset
Before
13 October 2026 at 22:39 UTC
After
13 October 2026 at 22:59 UTC
Message type
Before
Alert
After
Update
Source status
Before
Source alert
After
Source update
Reported area
Before
Ellis, OK; Harper, OK; Woodward, OK
After
Harper, OK; Woodward, OK
Source summary
Before
Severe Thunderstorm Warning · ~~Ellis, OK;~~ Harper, OK; Woodward, OK. Severe; observed; urgency: immediate.
After
Severe Thunderstorm Warning · Harper, OK; Woodward, OK. Severe; observed; urgency: immediate.
Official description
Before
SVROUN The National Weather Service in Norman has issued a * Severe Thunderstorm Warning for... North central Ellis County in northwestern Oklahoma... South central Harper County in northwestern Oklahoma... West central Woodward County in northwestern Oklahoma... * Until 630 PM CDT. * At 539 PM CDT, a severe thunderstorm was located near Fargo, moving northeast at 40 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. * Locations impacted include... Woodward, Fargo, Fort Supply, and Tangier.
After
At 557 PM CDT, a severe thunderstorm was located 6 miles southeast of Fort Supply, moving northeast at 30 mph. HAZARD...60 mph wind gusts and half dollar size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. Locations impacted include... Woodward, Fort Supply, and Tangier.
External source link
Before
https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.8be3ab3ec1dc3e25a8928eb55f36fbb13254202c.001.1
After
https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.19c545c77b3ba928d5a9a930c05448f2365235f6.002.1
Bulletin issued: 13 October 2026 at 22:59 UTC
View saved version 2
Original saved fields, unchanged. This is our record, not an archived copy of the external webpage.
{ "id": "nws:b31750a15ff49b8e7b246c04", "authorityId": "urn:oid:2.49.0.1.840.0.19c545c77b3ba928d5a9a930c05448f2365235f6.002.1", "sender": "w-nws.webmaster@noaa.gov", "references": [ { "identifier": "urn:oid:2.49.0.1.840.0.8be3ab3ec1dc3e25a8928eb55f36fbb13254202c.001.1", "sender": "w-nws.webmaster@noaa.gov" } ], "category": "weather", "title": "Severe Thunderstorm Warning issued October 13 at 5:59PM CDT until October 13 at 6:30PM CDT by NWS Norman OK", "eventType": "Severe Thunderstorm Warning", "occurredAt": "2026-10-13T22:59:00.000Z", "issuedAt": "2026-10-13T22:59:00.000Z", "timeBasis": "Bulletin issued", "effectiveAt": "2026-10-13T22:59:00.000Z", "onsetAt": "2026-10-13T22:59:00.000Z", "expiresAt": "2026-10-13T23:30:00.000Z", "forecastEndAt": "2026-10-13T23:30:00.000Z", "severity": "Severe", "urgency": "Immediate", "certainty": "Observed", "messageType": "Update", "status": "Source update", "place": "Harper, OK; Woodward, OK", "coordinates": null, "issuer": "NWS Norman OK", "summary": "Severe Thunderstorm Warning · Harper, OK; Woodward, OK. Severe; observed; urgency: immediate.", "description": "At 557 PM CDT, a severe thunderstorm was located 6 miles southeast of\nFort Supply, moving northeast at 30 mph.\n\nHAZARD...60 mph wind gusts and half dollar size hail.\n\nSOURCE...Radar indicated.\n\nIMPACT...Hail damage to vehicles is expected. Expect wind damage to\nroofs, siding, and trees.\n\nLocations impacted include...\nWoodward, Fort Supply, and Tangier.", "instruction": "For your protection move to an interior room on the lowest floor of a\nbuilding.", "url": "https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.19c545c77b3ba928d5a9a930c05448f2365235f6.002.1", "source": "nws", "sourceName": "NOAA NWS" }
Visit the external source ↗
The external page may have changed since this version was saved.

First saved record · 13 October 2026 at 22:43 UTC

Saved by us

13 October 2026 at 22:43 UTC

Starting point

First saved record

Our first saved version of Severe Thunderstorm Warning issued October 13 at 5:39PM CDT until October 13 at 6:30PM CDT by NWS Norman OK. We have no earlier saved version to compare.

Bulletin issued: 13 October 2026 at 22:39 UTC

View saved version 1

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

{
  "id": "nws:2b86bb5e2b600b9b72e4df80",
  "authorityId": "urn:oid:2.49.0.1.840.0.8be3ab3ec1dc3e25a8928eb55f36fbb13254202c.001.1",
  "sender": "w-nws.webmaster@noaa.gov",
  "references": [],
  "category": "weather",
  "title": "Severe Thunderstorm Warning issued October 13 at 5:39PM CDT until October 13 at 6:30PM CDT by NWS Norman OK",
  "eventType": "Severe Thunderstorm Warning",
  "occurredAt": "2026-10-13T22:39:00.000Z",
  "issuedAt": "2026-10-13T22:39:00.000Z",
  "timeBasis": "Bulletin issued",
  "effectiveAt": "2026-10-13T22:39:00.000Z",
  "onsetAt": "2026-10-13T22:39:00.000Z",
  "expiresAt": "2026-10-13T23:30:00.000Z",
  "forecastEndAt": "2026-10-13T23:30:00.000Z",
  "severity": "Severe",
  "urgency": "Immediate",
  "certainty": "Observed",
  "messageType": "Alert",
  "status": "Source alert",
  "place": "Ellis, OK; Harper, OK; Woodward, OK",
  "coordinates": null,
  "issuer": "NWS Norman OK",
  "summary": "Severe Thunderstorm Warning · Ellis, OK; Harper, OK; Woodward, OK. Severe; observed; urgency: immediate.",
  "description": "SVROUN\n\nThe National Weather Service in Norman has issued a\n\n* Severe Thunderstorm Warning for...\nNorth central Ellis County in northwestern Oklahoma...\nSouth central Harper County in northwestern Oklahoma...\nWest central Woodward County in northwestern Oklahoma...\n\n* Until 630 PM CDT.\n\n* At 539 PM CDT, a severe thunderstorm was located near Fargo, moving\nnortheast at 40 mph.\n\nHAZARD...60 mph wind gusts and quarter size hail.\n\nSOURCE...Radar indicated.\n\nIMPACT...Hail damage to vehicles is expected. Expect wind damage\nto roofs, siding, and trees.\n\n* Locations impacted include...\nWoodward, Fargo, Fort Supply, and Tangier.",
  "instruction": "For your protection move to an interior room on the lowest floor of a\nbuilding.",
  "url": "https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.8be3ab3ec1dc3e25a8928eb55f36fbb13254202c.001.1",
  "source": "nws",
  "sourceName": "NOAA NWS"
}

Visit the external source ↗

The external page may have changed since this version was saved.

Severe Thunderstorm Warning issued October 13 at 6:27PM CDT until October 13 at 6:30PM CDT by NWS Norman OK

Archived official description

What changed

8 recorded details changed

Source status changed

First saved record