This alert expired on 20 May 2026 at 05:30 UTC. It is kept here as a record.
It is the 13th strongest of the 41 detections recorded within 20 km of this point since 16 March 2026. The last comparable one was on 11 May 2026. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 19 at 11:54PM CDT until May 20 at 12:30AM CDT by NWS Austin/San Antonio TX
An estimated 1,780,168 people live within 50 km of this point.
Nearby, since 16 March 2026
- May 27, 2026 · score 76 · 3.6 km
- May 27, 2026 · score 76 · 5.8 km
- August 29, 2026 · score 52 · 10.5 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 80 % 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 | 80% |
| Coordinates | 29.5110, -98.2716 |
| Nearest City | Schertz (4 km) |
| Population Exposed | 1.8M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-20T04:54:00.000Z |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Uvalde, TX; Zavala, TX; Bexar, TX; Blanco, TX; Comal, TX; Kendall, TX; Austin, TX; Colorado, TX; Waller, TX; Wharton, TX |
| Headline | Severe Thunderstorm Warning issued May 19 at 11:54PM CDT until May 20 at 12:30AM CDT by NWS Austin/San Antonio TX |
| Expires | 2026-05-20T00:30:00-05:00 |
| SenderName | NWS Austin/San Antonio TX |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.6c2d5d20188efb0fbf204963c74599a17733baec.001.1","noaa_urn:oid:2.49.0.1.840.0.3e603491d5ec154ec6c609c05d98274712453de4.002.1","noaa_urn:oid:2.49.0.1.840.0.e303b9725c2028499fa1b35d31d5780679d045f0.002.1"] |
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 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 Schertz (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.