Right now
The most recent data we hold from NOAA arrived 5 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 05:15 UTC. It is kept here as a record.
No stronger detection stands among the 18 recorded within 20 km of this point since 20 May 2026 — 9 others scored the same.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 19 at 11:41PM CDT until May 20 at 12:15AM CDT by NWS Austin/San Antonio TX
An estimated 124,281 people live within 50 km of this point.
Nearby, since 20 May 2026
- May 20, 2026 · score 43 · 4.9 km
- August 27, 2026 · score 37 · 7.6 km
- July 13, 2026 · score 22 · 10.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 out of 100, at 80 % 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) | 43 / 100 |
| Our confidence | 80% |
| Coordinates | 29.7232, -97.4984 |
| Nearest City | San Marcos (46 km) |
| Population Exposed | 124.3K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-20T04:41:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.3e603491d5ec154ec6c609c05d982747 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Bexar, TX; Blanco, TX; Comal, TX; Kendall, TX; Austin, TX; Colorado, TX; Waller, TX; Washington, TX; Wharton, TX |
| Headline | Severe Thunderstorm Warning issued May 19 at 11:41PM CDT until May 20 at 12:15AM CDT by NWS Austin/San Antonio TX |
| Expires | 2026-05-20T00:15:00-05:00 |
| SenderName | NWS Austin/San Antonio TX |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.3e603491d5ec154ec6c609c05d98274712453de4.002.1","noaa_urn:oid:2.49.0.1.840.0.ee3da6141e34817b071ea12cd2a097cdf94b0c88.001.1"] |
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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