Right now
The most recent data we hold from HEAT GOV arrived 34 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 5 September 2026 at 15:45 UTC. It is kept here as a record.
It is the 7th strongest of the 19 detections recorded within 20 km of this point since 8 May 2026. The last comparable one was on 4 September 2026.
What the source measured
HEAT GOV reported: * WHAT...Heat index values up to 109 expected. * WHERE...Portions of central, east central, northern, northwest, southeast, southern, and southwest Oklahoma and northern Texas. * WHEN...From noon to 7 PM CDT Saturday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
An estimated 36,714 people live within 50 km of this point.
Nearby, since 8 May 2026
- May 10, 2026 · score 43 · 12.2 km
- June 6, 2026 · score 43 · 23.7 km
- June 12, 2026 · score 32 · 26.9 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 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) | 28 / 100 |
| Our confidence | 70% |
| Coordinates | 35.0393, -97.9494 |
| Nearest City | Chickasha (1 km) |
| Population Exposed | 36.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-05T17:00:00.000Z |
| Source | http://www.weather.gov |
Score Breakdown
Technical Details
| Event | Heat Advisory |
| Urgency | Expected |
| Certainty | Likely |
| Onset | 2026-09-05T12:00:00-05:00 |
| Expires | 2026-09-05T10:45:00-05:00 |
| AreaDesc | Woods; Alfalfa; Grant; Kay; Major; Garfield; Noble; Kingfisher; Logan; Payne; Oklahoma; Lincoln; McClain; Cleveland; Pottawatomie; Seminole; Hughes; Jackson; Tillman; Stephens; Garvin; Murray; Pontotoc; Coal; Cotton; Jefferson; Carter; Johnston; Atoka; Love; Marshall; Bryan; Hardeman; Foard; Wilbarger; Wichita; Knox; Baylor; Archer; Clay |
| SenderName | NWS Norman OK |
| ZonesUsedForCentroid | 10 |
| ZoneCount | 40 |
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 Chickasha?
Calamity.live data shows a weather event with CalamityScore 28/100, near Chickasha (United States), based on data from heat_gov. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.