This alert expired on 27 May 2026 at 11:15 UTC. It is kept here as a record.
No stronger detection stands among the 11 recorded within 20 km of this point since 23 May 2026 — one other scored the same. The last comparable one was on 23 May 2026. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued May 27 at 5:38AM CDT until May 27 at 6:15AM CDT by NWS Lake Charles LA
An estimated 107,633 people live within 50 km of this point.
Nearby, since 23 May 2026
- May 23, 2026 · score 43 · 15.3 km
- August 31, 2026 · score 37 · 16.6 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 out of 100, at 80 % 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) | 43 / 100 |
| Our confidence | 80% |
| Coordinates | 29.7375, -93.5544 |
| Nearest City | Port Arthur (41 km) |
| Population Exposed | 107.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-27T10:38:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.6848488fca6ead9c83054a039dbe16cf |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Calcasieu Lake; 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 |
| Headline | Special Marine Warning issued May 27 at 5:38AM 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:2.49.0.1.840.0.6848488fca6ead9c83054a039dbe16cfc1d2aed0.001.1","noaa_urn:oid:2.49.0.1.840.0.dca822a4e1c898f39a94810c0898c355e5a7eb34.001.1"] |
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 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 43/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.