Right now
The most recent data we hold from NOAA arrived 24 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 20 May 2026 at 05:45 UTC. It is kept here as a record.
It is the 3rd strongest of the 24 detections recorded within 20 km of this point since 20 May 2026. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 20 at 12:21AM CDT until May 20 at 12:45AM CDT by NWS Austin/San Antonio TX
An estimated 16,476 people live within 50 km of this point.
Nearby, since 20 May 2026
- May 20, 2026 · score 34 · 6.7 km
- May 27, 2026 · score 34 · 16.6 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 34 out of 100, at 86 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 34 / 100 |
| Our confidence | 86% |
| Coordinates | 28.9780, -99.6900 |
| Nearest City | Uvalde (28 km) |
| Population Exposed | 16.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-20T05:21:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.ffc84d273ec3ce4bbd6fecbc85e501a41d33a489.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Zavala, TX |
| Headline | Severe Thunderstorm Warning issued May 20 at 12:21AM CDT until May 20 at 12:45AM CDT by NWS Austin/San Antonio TX |
| Expires | 2026-05-20T00:45:00-05:00 |
| SenderName | NWS Austin/San Antonio TX |
| HasExactCoords | true |
| Iem TypeSummary | G |
| Iem Magnitude | 55 |
| Iem Unit | MPH |
| Iem City | 8 NNE D'Hanis |
| Iem County | Medina |
| Iem State | TX |
| Iem Wfo | EWX |
| Iem Remark | Parkers Recharge Dam. |
| MergedSources | [{"id":"iem_G_29.440_-99.250_1779250200000","source":"iem","severity":"low","severityValue":25,"timestamp":1779250200000,"latitude":29.44,"longitude":-99.25}] |
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 Uvalde?