Right now
The most recent data we hold from NOAA arrived 5 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 27 May 2026 at 11:15 UTC. It is kept here as a record.
It is one of only 3 we have recorded within 20 km of this point since 20 May 2026. The last comparable one was on 20 May 2026. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued May 27 at 5:11AM CDT until May 27 at 6:15AM CDT by NWS Lake Charles LA
An estimated 50,180 people live within 50 km of this point.
How we know
Confirmed by 11 independent sources, including NOAA.
Our own score for this event is 39 out of 100, at 90 % 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) | 39 / 100 |
| Our confidence | 90% |
| Coordinates | 29.1900, -94.3181 |
| Nearest City | Galveston (48 km) |
| Population Exposed | 50.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-27T10:11:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.dca822a4e1c898f39a94810c0898c355 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Sabine Lake; Coastal waters from Cameron LA to High Island TX out 20 NM; Waters from Cameron LA to High Island TX from 20 to 60 NM; 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; Waters from Freeport to Matagorda Ship Channel TX from 20 to 60 NM; Waters from High Island to Freeport TX from 20 to 60 NM |
| Headline | Special Marine Warning issued May 27 at 5:11AM CDT until May 27 at 6:15AM CDT by NWS Lake Charles LA |
| Expires | 2026-05-27T06:15:00-05:00 |
| SenderName | NWS Lake Charles LA |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.dca822a4e1c898f39a94810c0898c355e5a7eb34.001.1","noaa_urn:oid:2.49.0.1.840.0.b96360cfd53b214cae848fcf0ee2023253924a7b.002.1"] |
| Iem TypeSummary | M |
| Iem Magnitude | 45 |
| Iem Unit | MPH |
| Iem City | 4 ESE Bayou Vista |
| Iem County | GMZ335 |
| Iem State | TX |
| Iem Wfo | HGX |
| Iem Remark | Mesonet station GVCT2 Galveston Causeway. |
| MergedSources | [{"id":"iem_M_29.130_-94.550_1779873600000","source":"iem","severity":"low","severityValue":25,"timestamp":1779873600000,"latitude":29.13,"longitude":-94.55},{"id":"iem_M_29.420_-94.890_1779871200000","source":"iem","severity":"low","severityValue":25,"timestamp":1779871200000,"latitude":29.42,"longitude":-94.89},{"id":"iem_M_29.470_-94.620_1779872580000","source":"iem","severity":"low","severityValue":25,"timestamp":1779872580000,"latitude":29.47,"longitude":-94.62},{"id":"iem_M_29.540_-94.910_1779870540000","source":"iem","severity":"low","severityValue":25,"timestamp":1779870540000,"latitude":29.54,"longitude":-94.91},{"id":"iem_M_29.250_-94.850_1779871320000","source":"iem","severity":"low","severityValue":25,"timestamp":1779871320000,"latitude":29.25,"longitude":-94.85},{"id":"iem_M_29.180_-94.990_1779871200000","source":"iem","severity":"low","severityValue":25,"timestamp":1779871200000,"latitude":29.18,"longitude":-94.99},{"id":"iem_M_29.420_-94.890_1779870900000","source":"iem","severity":"low","severityValue":25,"timestamp":1779870900000,"latitude":29.42,"longitude":-94.89},{"id":"iem_M_29.360_-94.720_1779872400000","source":"iem","severity":"low","severityValue":25,"timestamp":1779872400000,"latitude":29.36,"longitude":-94.72},{"id":"iem_M_29.270_-94.870_1779871080000","source":"iem","severity":"low","severityValue":25,"timestamp":1779871080000,"latitude":29.27,"longitude":-94.87},{"id":"iem_M_29.300_-94.890_1779871260000","source":"iem","severity":"low","severityValue":25,"timestamp":1779871260000,"latitude":29.3,"longitude":-94.89}] |
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 39/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.