This alert expired on 20 May 2026 at 03:15 UTC. It is kept here as a record.
It is the 3rd strongest of the 26 detections recorded within 20 km of this point since 11 May 2026. Another comparable one was recorded here earlier the same day. 8 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 19 at 9:11PM CDT until May 19 at 10:15PM CDT by NWS Austin/San Antonio TX
An estimated 1,427,426 people live within 50 km of this point.
Nearby, since 11 May 2026
- July 17, 2026 · score 58 · 6.9 km
- May 20, 2026 · score 52 · 8.7 km
- May 11, 2026 · score 52 · 9.7 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 | 30.4743, -98.0791 |
| Nearest City | Leander (25 km) |
| Population Exposed | 1.4M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-20T02:11:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.910f8df67a8bc81b52b2fad2de8d2305 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Williamson, TX; Blanco, TX; Burnet, TX; Hays, TX; Travis, TX; Williamson, TX; Blanco, TX; Comal, TX; Hays, TX; Kendall, TX; Travis, TX; Williamson, TX and 3 more areas |
| Headline | Severe Thunderstorm Warning issued May 19 at 9:11PM CDT until May 19 at 10:15PM CDT by NWS Austin/San Antonio TX |
| Expires | 2026-05-19T22:15:00-05:00 |
| SenderName | NWS Austin/San Antonio TX |
| HasExactCoords | true |
| MergedCount | 8 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.910f8df67a8bc81b52b2fad2de8d2305f92a9c56.001.1","noaa_urn:oid:2.49.0.1.840.0.cc825c12661936179968d227d8af1410f903e8d6.001.1","noaa_urn:oid:2.49.0.1.840.0.b47ff080e2684222e540e72a7345745008c29957.002.1","noaa_urn:oid:2.49.0.1.840.0.cb54c598d7948a0bcdc5a3ec6d0b5d4bcea9053a.001.1","noaa_urn:oid:2.49.0.1.840.0.fbb6729e6b6231a2da1fbaebd1e1da75db6ed60a.001.1","noaa_urn:oid:2.49.0.1.840.0.99e62a90d71d551e5e16134e4cf030955366abe2.001.1","noaa_urn:oid:2.49.0.1.840.0.5fd86fc4878b17730a20a5dc11ccfe301accb0ee.001.1","noaa_urn:oid:2.49.0.1.840.0.99df9953dfaf8b37d2da17f4a346f2d4887ab117.001.1"] |
| Iem TypeSummary | E |
| Iem City | 9 NNE Burnet |
| Iem County | Burnet |
| Iem State | TX |
| Iem Wfo | EWX |
| Iem Remark | Burnet County EM relayed a volunteer fire department report of flooding over County Roads 202 and 203. |
| Google News RssFeed | weather |
| Google News SourceName | Austin American-Statesman |
| MergedSources | [{"id":"iem_F_30.910_-98.100_1779241860000","source":"iem","severity":"low","severityValue":25,"timestamp":1779241860000,"latitude":30.91,"longitude":-98.1},{"id":"iem_E_30.880_-98.150_1779239460000","source":"iem","severity":"low","severityValue":25,"timestamp":1779239460000,"latitude":30.88,"longitude":-98.15},{"id":"gnews_weather_494231_121","source":"google_news","severity":"medium","severityValue":40,"timestamp":1779233507000,"latitude":30.27,"longitude":-97.74},{"id":"gnews_weather_494232_151","source":"google_news","severity":"medium","severityValue":40,"timestamp":1779236095000,"latitude":30.27,"longitude":-97.74}] |
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 Leander?
Calamity.live data shows a weather event with CalamityScore 52/100, near Leander (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.