This alert expired on 21 May 2026 at 11:00 UTC. It is kept here as a record.
It is the 11th strongest of the 35 detections recorded within 20 km of this point since 15 April 2026. The last comparable one was on 30 April 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 21 at 5:18AM CDT until May 21 at 6:00AM CDT by NWS Austin/San Antonio TX
Nearby, since 15 April 2026
- July 17, 2026 · score 46 · 9.9 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 22 out of 100, at 62 % 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) | 22 / 100 |
| Our confidence | 62% |
| Coordinates | 29.7725, -99.9783 |
| Nearest City | Uvalde (65 km) |
| Impact Tier | minor |
| Timestamp | 2026-05-21T10:18:00.000Z |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Real, TX |
| Headline | Severe Thunderstorm Warning issued May 21 at 5:18AM CDT until May 21 at 6:00AM CDT by NWS Austin/San Antonio TX |
| Expires | 2026-05-21T06:00:00-05:00 |
| 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 22/100, near Uvalde (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.