Right now
The most recent data we hold from HEAT GOV arrived 3 minutes ago, and this point is in it.
Nothing else has been detected within 20 km in the last 24 hours.
This alert is in force until 8 September 2026, 06:00 UTC.
It is the 21st strongest of the 31 detections recorded within 20 km of this point since 10 April 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 northwest and west central Arkansas and east central, northeast, and southeast Oklahoma. * WHEN...For the first Heat Advisory, until 7 PM CDT this evening. For the second Heat Advisory, from noon to 7 PM CDT Tuesday. * IMPACT...
An estimated 697,383 people live within 50 km of this point.
Nearby, since 10 April 2026
- June 24, 2026 · score 48 · 3.8 km
- July 5, 2026 · score 48 · 7.6 km
- September 4, 2026 · score 37 · 17.2 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 69 % 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 | 69% |
| Coordinates | 35.9775, -95.6383 |
| Nearest City | Broken Arrow (16 km) |
| Population Exposed | 697.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-08T17:00:00.000Z |
| Source | http://www.weather.gov |
Score Breakdown
Technical Details
| Event | Heat Advisory |
| Urgency | Expected |
| Certainty | Likely |
| Onset | 2026-09-08T12:00:00-05:00 |
| Expires | 2026-09-08T01:00:00-05:00 |
| AreaDesc | Benton; Carroll; North and Central Sebastian; Southern Crawford; Central and Southern Franklin; Southern Sebastian; Pushmataha; Choctaw; Washington; Nowata; Craig; Ottawa; Pawnee; Tulsa; Rogers; Mayes; Delaware; Creek; Okfuskee; Okmulgee; Wagoner; Cherokee; Muskogee; McIntosh; Pittsburg; Haskell; Latimer; Western Osage; Northern Sequoyah; Northern Le Flore; Northeast Osage; Central and Southern Sequoyah; Central Le Flore; Southeast Osage; Southern Le Flore |
| SenderName | NWS Tulsa OK |
| ZonesUsedForCentroid | 12 |
| ZoneCount | 35 |
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 Broken Arrow?
Calamity.live data shows a weather event with CalamityScore 41/100, near Broken Arrow (United States), based on data from heat_gov. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.