This alert expired on 20 May 2026 at 04:15 UTC. It is kept here as a record.
It is the 4th strongest of the 54 detections recorded within 20 km of this point since 9 March 2026. The last comparable one was on 1 May 2026.
What the source measured
NOAA reported: Special Marine Warning issued May 19 at 9:50PM CDT until May 19 at 11:15PM CDT by NWS Houston/Galveston TX
An estimated 783,173 people live within 50 km of this point.
Nearby, since 9 March 2026
- May 23, 2026 · score 48 · 4.0 km
- March 9, 2026 · score 22 · 6.4 km
- July 15, 2026 · score 41 · 7.5 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 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) | 48 / 100 |
| Our confidence | 80% |
| Coordinates | 29.4652, -94.8495 |
| Nearest City | Texas City (11 km) |
| Population Exposed | 783.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-20T02:50:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.d09086c4b6dd9b704fb4caf1ee980028b755cdce.001.1 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Galveston Bay; Coastal waters from High Island to Freeport TX out 20 NM; Waters from High Island to Freeport TX from 20 to 60 NM |
| Headline | Special Marine Warning issued May 19 at 9:50PM CDT until May 19 at 11:15PM CDT by NWS Houston/Galveston TX |
| Expires | 2026-05-19T23:15:00-05:00 |
| 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 48/100, near Texas City (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.