Right now
The most recent data we hold from NOAA arrived 11 minutes ago, and this point is in it.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 8 September 2026 at 00:00 UTC. It is kept here as a record.
It is the 10th strongest of the 17 detections recorded within 20 km of this point since 26 April 2026. The last comparable one was on 17 August 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 7 at 6:33PM CDT until September 7 at 7:00PM CDT by NWS Tulsa OK
An estimated 111,275 people live within 50 km of this point.
Nearby, since 26 April 2026
- May 9, 2026 · score 43 · 4.4 km
- June 7, 2026 · score 67 · 8.1 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 37 out of 100, at 90 % 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 | 90% |
| Coordinates | 35.1069, -94.1762 |
| Nearest City | Fort Smith (37 km) |
| Population Exposed | 111.3K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-07T23:33:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.519e4f5ed5dc8dd8b496dce2bfe66c7754dc1a65.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Sebastian, AR |
| Headline | Severe Thunderstorm Warning issued September 7 at 6:33PM CDT until September 7 at 7:00PM CDT by NWS Tulsa OK |
| Expires | 2026-09-07T19:00:00-05:00 |
| SenderName | NWS Tulsa OK |
| HasExactCoords | true |
| Spc ReportType | wind |
| Spc Speed | 59 |
| Spc Location | 3 E Mill Creek |
| Spc County | Sebastian |
| Spc State | AR |
| Spc Comments | Peak gust observed at KFSM. (TSA) |
| Iem TypeSummary | G |
| Iem Magnitude | 59 |
| Iem Unit | MPH |
| Iem City | 3 E Mill Creek |
| Iem County | Sebastian |
| Iem State | AR |
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.
Want to know when something happens in this area?
Calamity.live data shows a weather event with CalamityScore 37/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.