Right now
The most recent data we hold from NOAA arrived 10 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 21 May 2026 at 02:15 UTC. It is kept here as a record.
It is the 2nd strongest of the 13 detections recorded within 20 km of this point since 19 May 2026. The last comparable one was on 20 May 2026. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 20 at 8:43PM CDT until May 20 at 9:15PM CDT by NWS San Angelo TX
Nearby, since 19 May 2026
- May 20, 2026 · score 22 · 14.3 km
- May 25, 2026 · score 39 · 24.3 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 61 % 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) | 22 / 100 |
| Our confidence | 61% |
| Coordinates | 30.8934, -100.0956 |
| Nearest City | San Angelo (71 km) |
| Impact Tier | minor |
| Timestamp | 2026-05-21T01:43:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.424e39d35c87792231b048fee7864711 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | McCulloch, TX; Mason, TX; Menard, TX; Schleicher, TX; Sutton, TX |
| Headline | Severe Thunderstorm Warning issued May 20 at 8:43PM CDT until May 20 at 9:15PM CDT by NWS San Angelo TX |
| Expires | 2026-05-20T21:15:00-05:00 |
| SenderName | NWS San Angelo TX |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.424e39d35c87792231b048fee7864711e14dfba5.001.1","noaa_urn:oid:2.49.0.1.840.0.66dc67315cf16a5dbd2ab84140b0d75d5adebe5d.001.1"] |
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 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.
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