Right now
The most recent data we hold from HEAT GOV arrived 31 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 18:00 UTC. It is kept here as a record.
It is the 3rd strongest of the 6 detections recorded within 20 km of this point since 7 June 2026. The last comparable one was on 17 August 2026.
What the source measured
HEAT GOV reported: * WHAT...Heat index values up to 106 expected. * WHERE...Northern Franklin County. * WHEN...From noon to 7 PM CDT Saturday. * IMPACTS...Heat related illnesses are possible especially impacting those not acclimated to the conditions or those performing strenuous activities.
An estimated 82,830 people live within 50 km of this point.
Nearby, since 7 June 2026
- August 7, 2026 · score 32 · 5.3 km
- June 7, 2026 · score 43 · 20.7 km
- July 12, 2026 · score 22 · 20.8 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 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) | 32 / 100 |
| Our confidence | 70% |
| Coordinates | 35.6933, -93.8445 |
| Nearest City | Fayetteville (50 km) |
| Population Exposed | 82.8K 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 | 2026-09-05T13:00:00-05:00 |
| AreaDesc | Northern Franklin |
| SenderName | NWS Tulsa OK |
| ZonesUsedForCentroid | 1 |
| ZoneCount | 1 |
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 32/100 (United States), based on data from heat_gov. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.