Right now
The most recent data we hold from HEAT GOV arrived 2 hours ago, and this point is in it.
One other detection within 20 km in the last 24 hours, 19 km from here.
This alert is in force until 8 September 2026, 00:00 UTC.
It is the 9th strongest of the 17 detections recorded within 20 km of this point since 9 May 2026. The last comparable one was on 6 September 2026.
What the source measured
HEAT GOV reported: * WHAT...Heat index values up to 109. * WHERE...Portions of central, east central, northern, northwest, southeast, southern, and southwest Oklahoma and northern Texas. * WHEN...Until 7 PM CDT Monday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
An estimated 985,516 people live within 50 km of this point.
Nearby, since 9 May 2026
- June 27, 2026 · score 52 · 11.4 km
- September 6, 2026 · score 37 · 18.6 km
- May 9, 2026 · score 43 · 19.7 km
How we know
One source: HEAT GOV. Not yet confirmed by a second, independent source.
Our own score for this event is 41 out of 100, at 70 % 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) | 41 / 100 |
| Our confidence | 70% |
| Coordinates | 35.0374, -97.5336 |
| Nearest City | Norman (22 km) |
| Population Exposed | 985.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-07T02:51:00.000Z |
| Source | http://www.weather.gov |
Score Breakdown
Technical Details
| Event | Heat Advisory |
| Urgency | Expected |
| Certainty | Likely |
| Onset | 2026-09-06T21:51:00-05:00 |
| Expires | 2026-09-07T19:00:00-05:00 |
| AreaDesc | Alfalfa; Grant; Kay; Major; Garfield; Noble; Blaine; Kingfisher; Logan; Payne; Caddo; Canadian; Oklahoma; Lincoln; Grady; McClain; Cleveland; Pottawatomie; Seminole; Hughes; Kiowa; Jackson; Tillman; Comanche; Stephens; Garvin; Murray; Pontotoc; Coal; Cotton; Jefferson; Carter; Johnston; Atoka; Love; Marshall; Bryan; Wilbarger; Wichita; Baylor; Archer; Clay |
| SenderName | NWS Norman OK |
| ZonesUsedForCentroid | 11 |
| ZoneCount | 42 |
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 Norman?
Calamity.live data shows a weather event with CalamityScore 41/100, near Norman (United States), based on data from heat_gov. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.