This alert expired on 12 July 2026 at 00:00 UTC. It is kept here as a record.
No stronger detection stands among the 56 recorded within 20 km of this point since 10 April 2026 — 14 others scored the same. The last comparable one was on 5 July 2026. 8 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 11 at 6:32PM CDT until July 11 at 7:00PM CDT by NWS Tulsa OK
An estimated 658,927 people live within 50 km of this point.
Nearby, since 10 April 2026
- June 1, 2026 · score 48 · 6.9 km
- June 25, 2026 · score 48 · 7.1 km
- May 8, 2026 · score 41 · 16.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 48 out of 100, at 81 % 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) | 48 / 100 |
| Our confidence | 81% |
| Coordinates | 36.1425, -95.7675 |
| Nearest City | Broken Arrow (10 km) |
| Population Exposed | 658.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-11T23:32:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.073367ae9da7a22838d70824fdaf08545a65bc91.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Tulsa, OK; Wagoner, OK |
| Headline | Severe Thunderstorm Warning issued July 11 at 6:32PM CDT until July 11 at 7:00PM CDT by NWS Tulsa OK |
| Expires | 2026-07-11T19:00:00-05:00 |
| SenderName | NWS Tulsa OK |
| HasExactCoords | true |
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.
Calamity.live data shows a weather event with CalamityScore 48/100, near Broken Arrow (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.