GMZ400-050900-
309 PM CDT Thu Jun 4 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...
A broad area of high pressure over most of the southeastern US will
extend west into the coastal waters allowing for east to southeast
winds. A weak surface low will try to form along an old frontal
boundary/surface trough over the northern Gulf and this will allow
for an increase in winds and seas into Friday. As the low moves
inland over the weekend, a persistent modest southerly flow along
with low to moderate seas will occur into early next week. A very
moist air mass and a weakness aloft will bring daily chances for
showers and thunderstorms through this weekend.
$$
GMZ436-050900- Atchafalaya and East Cote Blanche Bays- 309 PM CDT Thu Jun 4 2026 TONIGHT East winds 15 to 20 knots with gusts up to 25 knots, diminishing to 10 to 15 knots with gusts up to 20 knots after midnight. Bay waters rough. A slight chance of showers and thunderstorms early this evening. A slight chance of showers after midnight, then a chance of showers late. FRIDAY East winds 10 to 15 knots. Bay waters choppy. A chance of thunderstorms. A chance of showers in the morning, then showers likely in the afternoon. FRIDAY NIGHT Southeast winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Bay waters choppy. A chance of showers and thunderstorms. SATURDAY South winds 5 to 10 knots. Bay waters light chop. A chance of thunderstorms. Showers likely, mainly in the morning. SATURDAY NIGHT South winds 5 to 10 knots. Bay waters light chop. A slight chance of showers and thunderstorms. SUNDAY South winds 5 to 10 knots. Bay waters light chop. A slight chance of showers and thunderstorms in the morning. SUNDAY NIGHT South winds 5 to 10 knots. Bay waters light chop. MONDAY Southeast winds 5 to 10 knots. Bay waters light chop. MONDAY NIGHT Southeast winds 5 to 10 knots. Bay waters light chop. TUESDAY Southeast winds 5 to 10 knots. Bay waters light chop. A slight chance of showers and thunderstorms in the afternoon. TUESDAY NIGHT Southeast winds 5 to 10 knots. Bay waters light chop. Winds and waves higher in and near thunderstorms. $$
GMZ436-050900- Atchafalaya and East Cote Blanche Bays- 309 PM CDT Thu Jun 4 2026 TONIGHT East winds 15 to 20 knots with gusts up to 25 knots, diminishing to 10 to 15 knots with gusts up to 20 knots after midnight. Bay waters rough. A slight chance of showers and thunderstorms early this evening. A slight chance of showers after midnight, then a chance of showers late. FRIDAY East winds 10 to 15 knots. Bay waters choppy. A chance of thunderstorms. A chance of showers in the morning, then showers likely in the afternoon. FRIDAY NIGHT Southeast winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Bay waters choppy. A chance of showers and thunderstorms. SATURDAY South winds 5 to 10 knots. Bay waters light chop. A chance of thunderstorms. Showers likely, mainly in the morning. SATURDAY NIGHT South winds 5 to 10 knots. Bay waters light chop. A slight chance of showers and thunderstorms. SUNDAY South winds 5 to 10 knots. Bay waters light chop. A slight chance of showers and thunderstorms in the morning. SUNDAY NIGHT South winds 5 to 10 knots. Bay waters light chop. MONDAY Southeast winds 5 to 10 knots. Bay waters light chop. MONDAY NIGHT Southeast winds 5 to 10 knots. Bay waters light chop. TUESDAY Southeast winds 5 to 10 knots. Bay waters light chop. A slight chance of showers and thunderstorms in the afternoon. TUESDAY NIGHT Southeast winds 5 to 10 knots. Bay waters light chop. Winds and waves higher in and near thunderstorms. $$