Right now
The most recent data we hold from NOAA arrived 64 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 20 May 2026 at 09:45 UTC. It is kept here as a record.
It is the 4th strongest of the 21 detections recorded within 20 km of this point since 1 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: Special Marine Warning issued May 20 at 4:02AM CDT until May 20 at 4:45AM CDT by NWS Houston/Galveston TX
Nearby, since 1 May 2026
- July 23, 2026 · score 34 · 15.1 km
- May 27, 2026 · score 22 · 18.2 km
- May 20, 2026 · score 34 · 18.8 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 61 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 22 / 100 |
| Our confidence | 61% |
| Coordinates | 28.5296, -96.1564 |
| Nearest City | Bay City (53 km) |
| Impact Tier | minor |
| Timestamp | 2026-05-20T09:02:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.3c236c0238560b9d86c9ec5a8358e654 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Galveston Bay; Coastal waters from Freeport to Matagorda Ship Channel TX out 20 NM; Coastal waters from High Island to Freeport TX out 20 NM; Corpus Christi and Nueces Bays; Copano, Aransas, and Redfish Bays; San Antonio, Mesquite, and Espiritu Santo Bays; Coastal waters from Baffin Bay to Port Aransas out 20 NM; Coastal waters from Port Aransas to Matagorda Ship Channel out 20 NM |
| Headline | Special Marine Warning issued May 20 at 4:02AM CDT until May 20 at 4:45AM CDT by NWS Houston/Galveston TX |
| Expires | 2026-05-20T04:45:00-05:00 |
| SenderName | NWS Houston/Galveston TX |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.3c236c0238560b9d86c9ec5a8358e654a2ba0a23.001.1","noaa_urn:oid:2.49.0.1.840.0.911465d8bafc385dd02f86e27d7d1e8cb3ce892a.001.1"] |
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 8 March 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.
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