This alert expired on 23 July 2026 at 01:15 UTC. It is kept here as a record.
It is the 2nd strongest of the 30 detections recorded within 20 km of this point since 20 May 2026. 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 July 22 at 7:29PM CDT until July 22 at 8:15PM CDT by NWS Houston/Galveston TX
An estimated 524,048 people live within 50 km of this point.
Nearby, since 20 May 2026
- July 15, 2026 · score 43 · 14.3 km
- July 22, 2026 · score 48 · 15.1 km
- May 27, 2026 · score 43 · 15.3 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 48 out of 100, at 81 % 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) | 48 / 100 |
| Our confidence | 81% |
| Coordinates | 29.2384, -95.1266 |
| Nearest City | La Marque (21 km) |
| Population Exposed | 524.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-23T00:29:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.87c70cd35183b0122bd1de2d2b07e34f |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Brazoria, TX; Galveston, TX; Brazoria, TX; Galveston, TX; Harris, TX |
| Headline | Severe Thunderstorm Warning issued July 22 at 7:29PM CDT until July 22 at 8:15PM CDT by NWS Houston/Galveston TX |
| Expires | 2026-07-22T20:15:00-05:00 |
| SenderName | NWS Houston/Galveston TX |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.87c70cd35183b0122bd1de2d2b07e34fb4a1480d.001.1","noaa_urn:oid:2.49.0.1.840.0.7f764952b521e5818e47bbe423b490b437fde1bf.002.1"] |
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 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 48/100, near La Marque (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.