Severe Severe Storm ● Closed
Special Marine Warning — Coastal Waters from Port Fourchon LA to Lower Atchafalaya River LA out 20 nm; Coastal waters from Port Fourchon Louisiana to Lower Atchafalaya River LA from 20 to 60 NM
Loading live data… · Marker positions are approximate; severity is labelled in each popup. Sources: USGS, GDACS, NASA EONET, NOAA/NWS, EMSC.
Special Marine Warning issued July 21 at 4:17PM CDT until July 21 at 5:00PM CDT by NWS New Orleans LA
Measurements
| Coordinates | 28.9900, -91.2160 |
|---|---|
| Region | Coastal Waters from Port Fourchon LA to Lower Atchafalaya River LA out 20 nm; Coastal waters from Port Fourchon Louisiana to Lower Atchafalaya River LA fro |
| Expires | 2026-07-21T17:00:00-05:00 |
| Nws Urgency | Immediate |
| Nws Certainty | Likely |
Official source
Weather alert data courtesy of NOAA / National Weather Service
This is an official warning issued by the authority named above. Follow its instructions and those of your local emergency services.
Severity as published by US National Weather Service.
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Source updated 90 days ago (Jul 21, 2026 21:42 UTC) · we last heard from US National Weather Service 39 seconds ago
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