This alert is in force until 3 September 2026, 05:00 UTC.
It is the 16th strongest of the 30 detections recorded within 20 km of this point since 28 April 2026. The last comparable one was on 17 August 2026.
What the source measured
HEAT GOV reported: * WHAT...Heat index values up to 107 expected. * WHERE...In Arkansas, Southern Sebastian County. In Oklahoma, Central and Southern Sequoyah, Craig, Northeast Osage, Ottawa, Central Le Flore, Haskell, and Northern Le Flore Counties. * WHEN...For the first Heat Advisory, until 8 PM CDT this eveni...
An estimated 55,054 people live within 50 km of this point.
Nearby, since 28 April 2026
- June 25, 2026 · score 63 · 12.4 km
- May 9, 2026 · score 39 · 16.5 km
- June 12, 2026 · score 39 · 27.9 km
How we know
One source: HEAT GOV. Not yet confirmed by a second, independent source.
Our own score for this event is 32 out of 100, at 68 % 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) | 32 / 100 |
| Our confidence | 68% |
| Coordinates | 35.8016, -94.9475 |
| Nearest City | Tahlequah (13 km) |
| Population Exposed | 55.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-03T17:00:00.000Z |
| Source | http://www.weather.gov |
Score Breakdown
Technical Details
| Event | Heat Advisory |
| Urgency | Expected |
| Certainty | Likely |
| Onset | 2026-09-03T12:00:00-05:00 |
| Expires | 2026-09-03T00:00:00-05:00 |
| AreaDesc | Southern Sebastian; Craig; Ottawa; Haskell; Northern Le Flore; Northeast Osage; Central and Southern Sequoyah; Central Le Flore |
| SenderName | NWS Tulsa OK |
| ZonesUsedForCentroid | 8 |
| ZoneCount | 8 |
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 near Tahlequah?
Calamity.live data shows a weather event with CalamityScore 32/100, near Tahlequah (United States), based on data from heat_gov. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.