Special Marine Warning
Issued by NWS New Orleans/Baton Rouge, LA
Issued by NWS New Orleans/Baton Rouge, LA
434
WHUS54 KLIX 202342
SMWLIX
GMZ541-551-570-210045-
/O.NEW.KLIX.MA.W.0275.260720T2342Z-260721T0045Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Special Marine Warning
National Weather Service New Orleans LA
642 PM CDT Mon Jul 20 2026
The National Weather Service in New Orleans has issued a
* Special Marine Warning for...
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...
Terrebonne Bay...
* Until 745 PM CDT.
* At 640 PM CDT, a cluster of severe thunderstorms capable of
producing waterspouts was located along a line extending from 9 nm
east of Lower Atchafalaya River to 8 nm southeast of Isle Derniers,
moving southwest at 10 knots.
HAZARD...Waterspouts and wind gusts 34 knots or greater.
SOURCE...Radar.
IMPACT...Waterspouts can quickly form and capsize boats...damage
vessels and oil rigs...and create suddenly higher waves.
Small craft could be damaged in briefly higher winds and
suddenly higher waves.
* Locations impacted include...
Isle Derniers and Caillou Bay.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Strong winds will be dangerous for boaters or anyone near the water.
Make sure all on board are wearing life jackets. Seek shelter or move
to safe harbor until hazardous weather passes.
Report severe weather to the Coast Guard or the National Weather
Service.
&&
LAT...LON 2926 9129 2926 9120 2932 9117 2930 9117
2933 9113 2935 9114 2934 9110 2926 9109
2930 9103 2935 9102 2936 9094 2922 9079
2921 9075 2925 9068 2934 9063 2933 9061
2847 9047 2853 9127 2924 9126
TIME...MOT...LOC 2340Z 053DEG 11KT 2943 9106 2893 9071
WATERSPOUT...POSSIBLE
HAIL...0.00IN
WIND...>34KTS
$$