Right now
The most recent data we hold from NOAA arrived 6 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
3 other detections within 20 km in the last 24 hours, the nearest 8 km from here.
This alert expired on 12 September 2026 at 20:30 UTC. It is kept here as a record.
It is the 4th strongest of the 26 detections recorded within 20 km of this point since 15 April 2026. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 12 at 3:20PM CDT until September 12 at 3:30PM CDT by NWS Tulsa OK
An estimated 312,427 people live within 50 km of this point.
Nearby, since 15 April 2026
- June 8, 2026 · score 43 · 8.5 km
- September 12, 2026 · score 37 · 9.8 km
- June 22, 2026 · score 43 · 10.3 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 37 out of 100, at 79 % 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) | 37 / 100 |
| Our confidence | 79% |
| Coordinates | 36.4594, -94.2143 |
| Nearest City | Bella Vista (5 km) |
| Population Exposed | 312.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-12T20:20:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.d3adf8e306d99aa41191c5d99f25ab50e5f75ea1.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Madison, AR; Ottawa, OK; Cherokee, KS and 1 more areas |
| Headline | Severe Thunderstorm Warning issued September 12 at 3:20PM CDT until September 12 at 3:30PM CDT by NWS Tulsa OK |
| Expires | 2026-09-12T15:30:00-05:00 |
| SenderName | NWS Tulsa OK |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.d3adf8e306d99aa41191c5d99f25ab50e5f75ea1.001.1","noaa_urn:oid:2.49.0.1.840.0.2891817aa5961e2d5e4d70cf890120b253802815.001.1","noaa_urn:oid:2.49.0.1.840.0.6b11e5e2e1a681e225a43b0ca445297b1c8c8602.001.1","noaa_urn:oid:2.49.0.1.840.0.e56a631c812ed5945499971dcb40fff849b0bd59.002.1"] |
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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