This alert expired on 11 May 2026 at 08:00 UTC. It is kept here as a record.
No stronger detection stands among the 27 recorded within 20 km of this point since 11 May 2026 — 5 others scored the same. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued May 11 at 2:26AM CDT until May 11 at 3:00AM CDT by NWS Brownsville TX
An estimated 332,355 people live within 50 km of this point.
Nearby, since 11 May 2026
- May 20, 2026 · score 43 · 11.4 km
How we know
Confirmed by 6 independent sources, including NOAA.
Our own score for this event is 43 out of 100, at 91 % 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) | 43 / 100 |
| Our confidence | 91% |
| Coordinates | 27.6745, -96.9570 |
| Nearest City | Portland (42 km) |
| Population Exposed | 332.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-11T07:26:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.ab01ebf2aefef8a5ef34c18b81f8b655 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Laguna Madre From The Arroyo Colorado To 5 NM North Of Port Mansfield TX; Laguna Madre From 5 nm North Of Port Mansfield To Baffin Bay TX; Coastal waters from Port Mansfield TX to the Rio Grande River out 20 NM; Coastal waters from Baffin Bay to Port Mansfield TX out 20 NM; Waters from Port Mansfield TX to the Rio Grande River from 20 to 60 NM; Waters from Baffin Bay to Port Mansfield TX from 20 to 60 NM; Baffin Bay and Upper Laguna Madre; 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; Waters from Baffin Bay to Port Aransas from 20 to 60 NM; 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 |
| Headline | Special Marine Warning issued May 11 at 2:26AM CDT until May 11 at 3:00AM CDT by NWS Brownsville TX |
| Expires | 2026-05-11T03:00:00-05:00 |
| SenderName | NWS Brownsville TX |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.ab01ebf2aefef8a5ef34c18b81f8b6552254f68c.001.1","noaa_urn:oid:2.49.0.1.840.0.14068f4b35a949f8f0842796b2f74730496116fc.001.1","noaa_urn:oid:2.49.0.1.840.0.b950db74f95cfa845b8ad0fe9ff772fe9baa6eac.001.1"] |
| Iem TypeSummary | G |
| Iem Magnitude | 84 |
| Iem Unit | MPH |
| Iem City | 1 ESE Cc Nas |
| Iem County | Nueces |
| Iem State | TX |
| Iem Wfo | CRP |
| Iem Remark | AWOS station KNGP C. Christi NAS. |
| MergedSources | [{"id":"iem_M_27.630_-97.240_1778482800000","source":"iem","severity":"low","severityValue":25,"timestamp":1778482800000,"latitude":27.63,"longitude":-97.24},{"id":"iem_G_27.690_-97.280_1778483220000","source":"iem","severity":"low","severityValue":25,"timestamp":1778483220000,"latitude":27.69,"longitude":-97.28},{"id":"iem_G_28.080_-97.050_1778483040000","source":"iem","severity":"low","severityValue":25,"timestamp":1778483040000,"latitude":28.08,"longitude":-97.05},{"id":"iem_G_27.640_-97.290_1778482560000","source":"iem","severity":"low","severityValue":25,"timestamp":1778482560000,"latitude":27.64,"longitude":-97.29},{"id":"iem_G_27.680_-97.270_1778482560000","source":"iem","severity":"low","severityValue":25,"timestamp":1778482560000,"latitude":27.68,"longitude":-97.27}] |
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 43/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.