Waters from Lower Atchafalaya River to Intracoastal City LA from 20 to 60 NM GMZ475

 
 GMZ400-202100-
 310 AM CDT Wed May 20 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...
 
 Surface high pressure across the northern Gulf with a stalled frontal
 boundary to the north. This will allow for a persistent light to
 moderate southeast flow and light to modest seas through the
 week. Chances for showers and thunderstorms will also continue
 through the week and remain high into the weekend as a series of
 upper level disturbances produce several waves of precipitation.
 
 $$



 
 GMZ475-202100-
 Coastal waters from Lower Atchafalaya River to Intracoastal City
 LA from 20 to 60 NM-
 310 AM CDT Wed May 20 2026
 

 TODAY
 Southeast winds around 10 knots. Seas 2 to 4 feet. Wave
 Detail: Southeast 4 feet at 7 seconds. A slight chance of showers
 and thunderstorms this morning. A chance of showers and
 thunderstorms this afternoon.

 TONIGHT
 Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
 Detail: Southeast 3 feet at 6 seconds. A slight chance of showers
 and thunderstorms.

 THURSDAY
 Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
 Detail: Southeast 3 feet at 6 seconds. A chance of showers. A
 slight chance of thunderstorms in the morning, then a chance of
 thunderstorms in the afternoon.

 THURSDAY NIGHT
 Southeast winds 10 to 15 knots. Seas 2 to
 3 feet. Wave Detail: Southeast 3 feet at 6 seconds. A slight
 chance of showers and thunderstorms in the evening, then a chance
 of showers and thunderstorms after midnight.

 FRIDAY
 South winds 10 to 15 knots. Seas 2 to 3 feet. Wave
 Detail: South 3 feet at 6 seconds. A chance of showers with a
 slight chance of thunderstorms.

 FRIDAY NIGHT
 Southeast winds 10 to 15 knots. Seas 2 to 3 feet.
 Wave Detail: Southeast 3 feet at 6 seconds. A slight chance of
 showers and thunderstorms in the evening.

 SATURDAY
 Southeast winds 10 to 15 knots. Seas 2 to 3 feet. A
 slight chance of showers and thunderstorms in the morning, then a
 chance of showers and thunderstorms in the afternoon.

 SATURDAY NIGHT
 Southeast winds 10 to 15 knots. Seas 2 to
 4 feet. A chance of showers. A chance of thunderstorms, mainly in
 the evening.

 SUNDAY
 Southeast winds 10 to 15 knots. Seas 3 to 4 feet. A
 chance of thunderstorms. A chance of showers in the morning, then
 showers likely in the afternoon.

 SUNDAY NIGHT
 Southeast winds 10 to 15 knots. Seas 3 to 4 feet.
 Showers likely with a slight chance of thunderstorms.
 
 Winds and seas higher in and near thunderstorms.
 
 $$