GMZ400-182100-
 309 AM CDT Mon May 18 2026
 
 .Synopsis for Lower Atchafalaya River LA to High Island TX out
 60 NM including Sabine and Calcasieu Lakes and Vermilion and Cote
 Blanche Bays...
 
 Tightened pressure gradient will remain in place through at least
 Tuesday morning. A boundary of disturbed weather is expected to
 near the region on Tuesday causing all remaining high pressure
 influence to back eastward. This decrease in pressure will loosen
 the gradient allowing winds and then seas to fall back on Tuesday,
 remaining low through the remainder of the week.
 
 Rain chances increase Tuesday night and will remain elevated
 through the rest of the forecast as a series of disturbances cross
 the region. Winds will prevail somewhat low and onshore, however
 volatile winds and seas could be possible local to storms each
 day.
 
 $$




 
 GMZ455-182100-
 Coastal waters from Lower Atchafalaya River to Intracoastal City
 LA out 20 NM-
 309 AM CDT Mon May 18 2026
 
 SMALL CRAFT EXERCISE CAUTION IN EFFECT THROUGH LATE TONIGHT
 

 TODAY
 Southeast winds 15 to 20 knots. Seas 2 to 3 feet. Wave
 Detail: Southeast 2 feet at 3 seconds.

 TONIGHT
 Southeast winds 15 to 20 knots, diminishing to 10 to
 15 knots after midnight. Seas 2 to 3 feet. Wave Detail: Southeast
 2 feet at 3 seconds.

 TUESDAY
 Southeast winds 10 to 15 knots with gusts up to
 20 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at
 3 seconds.

 TUESDAY NIGHT
 Southeast winds 10 to 15 knots, diminishing to
 5 to 10 knots after midnight. Seas around 2 feet. Wave Detail:
 Southeast 2 feet at 3 seconds. A slight chance of showers.

 WEDNESDAY
 Southeast winds 5 to 10 knots. Seas around 2 feet.
 Wave Detail: Southeast 1 foot at 3 seconds. A chance of showers
 with a slight chance of thunderstorms in the afternoon.

 WEDNESDAY NIGHT
 Southeast winds 5 to 10 knots. Seas 1 to
 2 feet. Wave Detail: Southeast 1 foot at 2 seconds. A chance of
 showers with a slight chance of thunderstorms.

 THURSDAY
 Southeast winds 5 to 10 knots. Seas 1 foot or less,
 then around 2 feet in the afternoon. A slight chance of
 thunderstorms. A slight chance of showers in the morning, then a
 chance of showers in the afternoon.

 THURSDAY NIGHT
 South winds 5 to 10 knots. Seas around 2 feet.
 A slight chance of showers and thunderstorms in the evening, then
 a chance of showers and thunderstorms after midnight.

 FRIDAY
 South winds around 10 knots. Seas around 2 feet. A
 chance of showers. A slight chance of thunderstorms in the
 morning, then a chance of thunderstorms in the afternoon.

 FRIDAY NIGHT
 South winds around 10 knots. Seas around 2 feet.
 A chance of showers with a slight chance of thunderstorms in the
 evening, then showers likely with a chance of thunderstorms after
 midnight.
 
 Winds and seas higher in and near thunderstorms.
 
 $$