GMZ400-201615-
1024 PM CDT Sun Jul 19 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 over the western Gulf will bring westerly
winds to the coastal waters through the first half of the week,
along with low rain chances. Initially light winds will trend
breezier tonight into tomorrow, particularly for our eastern waters
where speeds may reach 15-20 kt. Expect generally 15-20 kt winds and
2-4 ft seas heading into midweek, with perhaps a few isolated
showers over the far eastern waters after Monday. Attention then
turns to the tropical system that will likely be approaching the
area from the east around Wednesday. While significant uncertainty
remains in the track and intensity of this system, guidance is
starting to point towards the potential for tropical storm
conditions to occur over the coastal waters Wednesday into Thursday.
$$
GMZ435-201615- Vermilion and West Cote Blanche Bays- 1024 PM CDT Sun Jul 19 2026 TONIGHT West winds 5 to 10 knots. Bay waters light chop. MONDAY Northwest winds 5 to 10 knots. Bay waters light chop. MONDAY NIGHT West winds 5 to 10 knots, increasing to 10 to 15 knots with gusts up to 20 knots after midnight. Bay waters choppy. A slight chance of showers and thunderstorms late in the evening. TUESDAY Northwest winds 10 to 15 knots with gusts up to 20 knots, diminishing to 5 to 10 knots in the afternoon. Bay waters choppy. A chance of showers and thunderstorms in the afternoon. TUESDAY NIGHT West winds 5 to 10 knots, increasing to 10 to 15 knots with gusts up to 20 knots after midnight. Bay waters choppy. A chance of thunderstorms in the evening. A chance of showers. A slight chance of thunderstorms after midnight. WEDNESDAY West winds 10 to 15 knots with gusts up to 20 knots. Bay waters choppy. A chance of thunderstorms. A chance of showers. WEDNESDAY NIGHT West winds 15 to 20 knots, becoming northwest 20 to 25 knots after midnight. Bay waters very rough. A chance of thunderstorms. A chance of showers. THURSDAY Tropical storm conditions possible. THURSDAY NIGHT Southeast winds 25 to 30 knots with gusts up to 45 knots, becoming south 10 to 15 knots with gusts up to 20 knots after midnight. Bay waters extremely rough. A chance of showers and thunderstorms early in the evening, then a slight chance of showers and thunderstorms in the late evening and overnight. FRIDAY South winds 5 to 10 knots. Bay waters light chop. A slight chance of showers and thunderstorms. FRIDAY NIGHT Southwest winds 5 to 10 knots. Bay waters light chop. A slight chance of showers and thunderstorms. Winds and waves higher in and near thunderstorms. $$
GMZ435-201615- Vermilion and West Cote Blanche Bays- 1024 PM CDT Sun Jul 19 2026 TONIGHT West winds 5 to 10 knots. Bay waters light chop. MONDAY Northwest winds 5 to 10 knots. Bay waters light chop. MONDAY NIGHT West winds 5 to 10 knots, increasing to 10 to 15 knots with gusts up to 20 knots after midnight. Bay waters choppy. A slight chance of showers and thunderstorms late in the evening. TUESDAY Northwest winds 10 to 15 knots with gusts up to 20 knots, diminishing to 5 to 10 knots in the afternoon. Bay waters choppy. A chance of showers and thunderstorms in the afternoon. TUESDAY NIGHT West winds 5 to 10 knots, increasing to 10 to 15 knots with gusts up to 20 knots after midnight. Bay waters choppy. A chance of thunderstorms in the evening. A chance of showers. A slight chance of thunderstorms after midnight. WEDNESDAY West winds 10 to 15 knots with gusts up to 20 knots. Bay waters choppy. A chance of thunderstorms. A chance of showers. WEDNESDAY NIGHT West winds 15 to 20 knots, becoming northwest 20 to 25 knots after midnight. Bay waters very rough. A chance of thunderstorms. A chance of showers. THURSDAY Tropical storm conditions possible. THURSDAY NIGHT Southeast winds 25 to 30 knots with gusts up to 45 knots, becoming south 10 to 15 knots with gusts up to 20 knots after midnight. Bay waters extremely rough. A chance of showers and thunderstorms early in the evening, then a slight chance of showers and thunderstorms in the late evening and overnight. FRIDAY South winds 5 to 10 knots. Bay waters light chop. A slight chance of showers and thunderstorms. FRIDAY NIGHT Southwest winds 5 to 10 knots. Bay waters light chop. A slight chance of showers and thunderstorms. Winds and waves higher in and near thunderstorms. $$