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 02:15 UTC. It is kept here as a record.
No stronger detection stands among the 13 recorded within 20 km of this point since 9 May 2026 — 5 others scored the same. Another comparable one was recorded here earlier the same day. 5 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 19 at 8:35PM CDT until May 19 at 9:15PM CDT by NWS Austin/San Antonio TX
An estimated 1,466,850 people live within 50 km of this point.
Nearby, since 9 May 2026
- June 6, 2026 · score 52 · 1.3 km
- June 5, 2026 · score 52 · 8.3 km
- May 27, 2026 · score 48 · 15.2 km
How we know
Confirmed by 5 independent sources, including NOAA.
Our own score for this event is 52 out of 100, at 91 % 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) | 52 / 100 |
| Our confidence | 91% |
| Coordinates | 30.6115, -97.9260 |
| Nearest City | Leander (8 km) |
| Population Exposed | 1.5M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-20T01:35:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.408248f21cc1743655c66980bdf39b49 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Williamson, TX; Blanco, TX; Burnet, TX; Gillespie, TX; Hays, TX; Llano, TX; Travis, TX; Williamson, TX |
| Headline | Severe Thunderstorm Warning issued May 19 at 8:35PM CDT until May 19 at 9:15PM CDT by NWS Austin/San Antonio TX |
| Expires | 2026-05-19T21:15:00-05:00 |
| SenderName | NWS Austin/San Antonio TX |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.408248f21cc1743655c66980bdf39b49aba437fa.001.1","noaa_urn:oid:2.49.0.1.840.0.156c30b6b62db80949b3d87dafa25591b46d24ac.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 1 |
| Iem Unit | Inch |
| Iem City | Andice |
| Iem County | Williamson |
| Iem State | TX |
| Iem Wfo | EWX |
| Iem Remark | Quarter sized hail reported by trained spotter at Andice. |
| Google News RssFeed | weather |
| Google News SourceName | Austin American-Statesman |
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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