GMZ400-042100-
309 AM 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
ridge 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 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.
$$
GMZ470-042100- Coastal waters from Cameron LA to High Island TX from 20 to 60 NM- 309 AM CDT Thu Jun 4 2026 SMALL CRAFT EXERCISE CAUTION IN EFFECT FROM THIS EVENING THROUGH LATE TONIGHT TODAY East winds 10 to 15 knots. Seas 2 to 4 feet. Wave Detail: Southeast 3 feet at 5 seconds. A chance of showers and thunderstorms. TONIGHT East winds 15 to 20 knots with gusts up to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at 7 seconds. A chance of showers with a slight chance of thunderstorms. FRIDAY East winds 10 to 15 knots. Seas 2 to 4 feet. Wave Detail: Southeast 4 feet at 8 seconds. A slight chance of showers and thunderstorms in the morning. FRIDAY NIGHT Southeast winds around 10 knots, becoming south after midnight. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 8 seconds. SATURDAY South winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 8 seconds. SATURDAY NIGHT South winds around 10 knots, increasing to around 15 knots with gusts up to 20 knots after midnight. Seas 2 to 4 feet. Wave Detail: Southeast 3 feet at 7 seconds. SUNDAY South winds around 15 knots. Seas 3 to 4 feet. SUNDAY NIGHT South winds around 15 knots. Seas 3 to 4 feet. MONDAY Southeast winds 10 to 15 knots. Seas 3 to 4 feet. MONDAY NIGHT Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Winds and seas higher in and near thunderstorms. $$
GMZ470-042100- Coastal waters from Cameron LA to High Island TX from 20 to 60 NM- 309 AM CDT Thu Jun 4 2026 SMALL CRAFT EXERCISE CAUTION IN EFFECT FROM THIS EVENING THROUGH LATE TONIGHT TODAY East winds 10 to 15 knots. Seas 2 to 4 feet. Wave Detail: Southeast 3 feet at 5 seconds. A chance of showers and thunderstorms. TONIGHT East winds 15 to 20 knots with gusts up to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at 7 seconds. A chance of showers with a slight chance of thunderstorms. FRIDAY East winds 10 to 15 knots. Seas 2 to 4 feet. Wave Detail: Southeast 4 feet at 8 seconds. A slight chance of showers and thunderstorms in the morning. FRIDAY NIGHT Southeast winds around 10 knots, becoming south after midnight. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 8 seconds. SATURDAY South winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 8 seconds. SATURDAY NIGHT South winds around 10 knots, increasing to around 15 knots with gusts up to 20 knots after midnight. Seas 2 to 4 feet. Wave Detail: Southeast 3 feet at 7 seconds. SUNDAY South winds around 15 knots. Seas 3 to 4 feet. SUNDAY NIGHT South winds around 15 knots. Seas 3 to 4 feet. MONDAY Southeast winds 10 to 15 knots. Seas 3 to 4 feet. MONDAY NIGHT Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Winds and seas higher in and near thunderstorms. $$