This alert expired on 19 May 2026 at 11:45 UTC. It is kept here as a record.
It is one of only 2 we have recorded within 20 km of this point since 19 May 2026.
What the source measured
NOAA reported: Special Marine Warning issued May 19 at 5:09AM CDT until May 19 at 6:45AM CDT by NWS Corpus Christi TX
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 22 out of 100, at 67 % 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 | 67% |
| Coordinates | 28.0890, -95.9436 |
| Nearest City | Bay City (99 km) |
| Impact Tier | minor |
| Timestamp | 2026-05-19T10:09:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.6ea1f8bd755484bc79a1538fe93bb544 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Waters from Port Aransas to Matagorda Ship Channel from 20 to 60 NM; 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 19 at 5:09AM CDT until May 19 at 6:45AM CDT by NWS Corpus Christi TX |
| Expires | 2026-05-19T06:45:00-05:00 |
| SenderName | NWS Corpus Christi TX |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.6ea1f8bd755484bc79a1538fe93bb544e7681d13.001.1","noaa_urn:oid:2.49.0.1.840.0.f3326735e4a07fed52cd3749ff2afd7e5d6c1485.001.1"] |
| Iem TypeSummary | G |
| Iem Magnitude | 55 |
| Iem Unit | MPH |
| Iem City | 8 SE Magnolia Beach |
| Iem County | Calhoun |
| Iem State | TX |
| Iem Wfo | CRP |
| Iem Remark | Mesonet station FW4074 Port O Connor. |
| MergedSources | [{"id":"iem_G_28.440_-96.410_1779183900000","source":"iem","severity":"low","severityValue":25,"timestamp":1779183900000,"latitude":28.44,"longitude":-96.41}] |
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.
Want to know when something happens in this area?
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 185 scientific monitoring sources.