This alert expired on 11 July 2026 at 23:45 UTC. It is kept here as a record.
No stronger detection stands among the 8 recorded within 20 km of this point since 18 June 2026 — 4 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 July 11 at 6:35PM CDT until July 11 at 6:45PM CDT by NWS New Orleans LA
An estimated 53,642 people live within 50 km of this point.
Nearby, since 18 June 2026
- July 20, 2026 · score 32 · 6.1 km
- July 21, 2026 · score 32 · 8.6 km
- July 14, 2026 · score 39 · 20.7 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 39 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) | 39 / 100 |
| Our confidence | 80% |
| Coordinates | 29.1830, -90.7830 |
| Nearest City | Houma (47 km) |
| Population Exposed | 53.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-11T23:35:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.afa279884fd40425fa9ab7ca27a17c0f5fee97b0.001.1 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Terrebonne Bay; Coastal Waters from Port Fourchon LA to Lower Atchafalaya River LA out 20 nm |
| Headline | Special Marine Warning issued July 11 at 6:35PM CDT until July 11 at 6:45PM CDT by NWS New Orleans LA |
| Expires | 2026-07-11T18:45:00-05:00 |
| SenderName | NWS New Orleans LA |
| HasExactCoords | true |
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 39/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.