This alert expired on 10 May 2026 at 01:30 UTC. It is kept here as a record.
No stronger detection stands among the 10 recorded within 20 km of this point since 10 May 2026 — 9 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 9 at 7:59PM CDT until May 9 at 8:30PM CDT by NWS Houston/Galveston TX
An estimated 272,364 people live within 50 km of this point.
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.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 43 / 100 |
| Our confidence | 80% |
| Coordinates | 29.9033, -94.7067 |
| Nearest City | Baytown (32 km) |
| Population Exposed | 272.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-10T00:59:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.716ac6ad1133e4ed949545b33a1a1313783b3333.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Chambers, TX; Liberty, TX |
| Headline | Severe Thunderstorm Warning issued May 9 at 7:59PM CDT until May 9 at 8:30PM CDT by NWS Houston/Galveston TX |
| Expires | 2026-05-09T20:30:00-05:00 |
| SenderName | NWS Houston/Galveston TX |
| HasExactCoords | true |
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 10 February 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.
Calamity.live data shows a weather event with CalamityScore 43/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.