This alert expired on 24 July 2026 at 05:15 UTC. It is kept here as a record.
It is the 6th strongest of the 11 detections recorded within 20 km of this point since 20 May 2026. Another comparable one was recorded here earlier the same day. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Tropical Storm Warning issued July 23 at 4:03PM CDT by NWS Houston/Galveston TX
An estimated 88,286 people live within 50 km of this point.
Nearby, since 20 May 2026
- July 6, 2026 · score 43 · 8.6 km
- June 19, 2026 · score 43 · 10.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 39 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) | 39 / 100 |
| Our confidence | 81% |
| Coordinates | 29.6006, -94.2025 |
| Nearest City | Port Arthur (41 km) |
| Population Exposed | 88.3K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-23T21:03:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tropical Storm Warning_noaa_urn:oid:2.49.0.1.840.0.7d261e3c84024507fa5ec1deca70cc5b |
Score Breakdown
Technical Details
| Event | Tropical Storm Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Coastal Brazoria; Galveston Island; Bolivar Peninsula and 7 more areas |
| Headline | Tropical Storm Warning issued July 23 at 4:03PM CDT by NWS Houston/Galveston TX |
| Expires | 2026-07-24T00:15:00-05:00 |
| SenderName | NWS Houston/Galveston TX |
| HasExactCoords | true |
| MergedCount | 10 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.7d261e3c84024507fa5ec1deca70cc5b7377512b.005.1","noaa_urn:oid:2.49.0.1.840.0.7d261e3c84024507fa5ec1deca70cc5b7377512b.001.1","noaa_urn:oid:2.49.0.1.840.0.7d261e3c84024507fa5ec1deca70cc5b7377512b.002.1","noaa_urn:oid:2.49.0.1.840.0.7d261e3c84024507fa5ec1deca70cc5b7377512b.006.1","noaa_urn:oid:2.49.0.1.840.0.7d261e3c84024507fa5ec1deca70cc5b7377512b.003.1","noaa_urn:oid:2.49.0.1.840.0.7d261e3c84024507fa5ec1deca70cc5b7377512b.004.1","noaa_urn:oid:2.49.0.1.840.0.43fcbf9f3effb70926efd6b8f8c59b8cd9e36255.002.1","noaa_urn:oid:2.49.0.1.840.0.43fcbf9f3effb70926efd6b8f8c59b8cd9e36255.003.1","noaa_urn:oid:2.49.0.1.840.0.43fcbf9f3effb70926efd6b8f8c59b8cd9e36255.001.1","noaa_urn:oid:2.49.0.1.840.0.104469ee791feed79843d6b48c2e0c2a1544bfb1.003.1"] |
Safety Information
During a tropical cyclone: shelter in a sturdy interior room away from windows. Stock emergency supplies including water, food, medications, and flashlights. Do not venture outdoors during the eye of the storm. After passage, beware of downed power lines, flooding, and structural damage. Follow official guidance for evacuation and shelter.
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 39/100, near Port Arthur (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.