This alert is in force until 2 September 2026, 18:00 UTC.
It is the 5th strongest of the 5 detections recorded within 20 km of this point since 15 March 2026. The last comparable one was on 10 May 2026.
What the source measured
HEAT GOV reported: * WHAT...Heat index values up to 108 expected. * WHERE...Portions of east central, southeast, southern, and southwest Oklahoma and northern Texas. * WHEN...From 1 PM to 7 PM CDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
An estimated 48,407 people live within 50 km of this point.
Nearby, since 15 March 2026
- May 9, 2026 · score 58 · 15.3 km
How we know
One source: HEAT GOV. Not yet confirmed by a second, independent source.
Our own score for this event is 28 out of 100, at 69 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 28 / 100 |
| Our confidence | 69% |
| Coordinates | 34.3459, -97.5988 |
| Nearest City | Duncan (37 km) |
| Population Exposed | 48.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-02T18:00:00.000Z |
| Source | http://www.weather.gov |
Score Breakdown
Technical Details
| Event | Heat Advisory |
| Urgency | Expected |
| Certainty | Likely |
| Onset | 2026-09-02T13:00:00-05:00 |
| Expires | 2026-09-02T13:00:00-05:00 |
| AreaDesc | Hughes; Jackson; Tillman; Comanche; Stephens; Murray; Pontotoc; Coal; Cotton; Jefferson; Carter; Johnston; Atoka; Love; Marshall; Bryan; Wilbarger; Wichita; Archer; Clay |
| SenderName | NWS Norman OK |
| ZonesUsedForCentroid | 10 |
| ZoneCount | 20 |
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 10 February 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 28/100 (United States), based on data from heat_gov. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.