This alert expired on 27 May 2026 at 16:00 UTC. It is kept here as a record.
It is the 2nd strongest of the 42 detections recorded within 20 km of this point since 1 May 2026. Another comparable one was recorded here earlier the same day. 12 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued May 27 at 8:56AM CDT until May 27 at 11:00AM CDT by NWS Houston/Galveston TX
Nearby, since 1 May 2026
- May 19, 2026 · score 22 · 7.4 km
- July 23, 2026 · score 22 · 8.9 km
- July 15, 2026 · score 22 · 9.7 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 22 out of 100, at 58 % 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) | 22 / 100 |
| Our confidence | 58% |
| Coordinates | 28.5238, -96.3424 |
| Nearest City | Bay City (62 km) |
| Impact Tier | minor |
| Timestamp | 2026-05-27T13:56:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.a28f2b3ee9b69425599b4d0ebc4f09e346e77e5d.001.1 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Matagorda Bay; Coastal waters from Freeport to Matagorda Ship Channel TX out 20 NM; Waters from Freeport to Matagorda Ship Channel TX from 20 to 60 NM |
| Headline | Special Marine Warning issued May 27 at 8:56AM CDT until May 27 at 11:00AM CDT by NWS Houston/Galveston TX |
| Expires | 2026-05-27T11:00:00-05:00 |
| 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 22/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.