This alert expired on 23 May 2026 at 14:15 UTC. It is kept here as a record.
It is the 13th strongest of the 31 detections recorded within 20 km of this point since 16 March 2026. The last comparable one was on 11 May 2026. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 23 at 8:21AM CDT until May 23 at 9:15AM CDT by NWS Austin/San Antonio TX
An estimated 1,660,499 people live within 50 km of this point.
Nearby, since 16 March 2026
- May 11, 2026 · score 52 · 5.5 km
- July 15, 2026 · score 76 · 11.9 km
- May 27, 2026 · score 52 · 17.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 52 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) | 52 / 100 |
| Our confidence | 81% |
| Coordinates | 29.2975, -98.3950 |
| Nearest City | San Antonio (16 km) |
| Population Exposed | 1.7M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-23T13:21:00.000Z |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Atascosa, TX; Bexar, TX; Medina, TX; Wilson, TX |
| Headline | Severe Thunderstorm Warning issued May 23 at 8:21AM CDT until May 23 at 9:15AM CDT by NWS Austin/San Antonio TX |
| Expires | 2026-05-23T09:15:00-05:00 |
| SenderName | NWS Austin/San Antonio TX |
| 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 52/100, near San Antonio (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.