Right now
The most recent data we hold from NOAA arrived 4 minutes ago, and this point is in it.
2 other detections within 20 km in the last 24 hours, the nearest <1 km from here.
This alert expired on 9 September 2026 at 22:15 UTC. It is kept here as a record.
It is the 27th strongest of the 41 detections recorded within 20 km of this point since 17 April 2026. The last comparable one was on 7 August 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 9 at 4:47PM CDT until September 9 at 5:15PM CDT by NWS Norman OK
Nearby, since 17 April 2026
- September 9, 2026 · score 16 · 0.5 km
- June 4, 2026 · score 22 · 6.4 km
- June 2, 2026 · score 22 · 17.1 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 16 out of 100, at 60 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 16 / 100 |
| Our confidence | 60% |
| Coordinates | 37.0467, -97.7467 |
| Nearest City | Ponca City (69 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-09T21:47:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.b515fee5612166af61f5b83629179e3c33a64c5a.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Alfalfa, OK; Sumner, KS |
| Headline | Severe Thunderstorm Warning issued September 9 at 4:47PM CDT until September 9 at 5:15PM CDT by NWS Norman OK |
| Expires | 2026-09-09T17:15:00-05:00 |
| SenderName | NWS Norman OK |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.b515fee5612166af61f5b83629179e3c33a64c5a.001.1","noaa_urn:oid:2.49.0.1.840.0.5c517e77037ae1cd559ee1eae8d7493a2663ed0b.001.1","noaa_urn:oid:2.49.0.1.840.0.e8a12d58b3ad92740e23a44daa53c52d95cd981e.001.1"] |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
Series begins 8 March 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
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