GMZ400-050600-
1143 AM CST Thu Dec 4 2025
.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 small craft advisory is now in effect as ASCAT showed 20 knot
winds in our western waters. Winds will remain gusty and offshore
through tonight with the SCA ending at 09Z tonight. With the
offshore flow there is a possibility for a low water event (-1.0
ft below MLLW) during low tide on Friday morning. For the weekend
conditions will improve before another cold front brings more
gusty offshore winds on Monday.
$$
GMZ475-050600-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA from 20 to 60 NM-
1143 AM CST Thu Dec 4 2025
SMALL CRAFT EXERCISE CAUTION IN EFFECT THROUGH LATE TONIGHT
TONIGHT
West winds 10 to 15 knots, becoming north with gusts
up to 20 knots late this evening and overnight. Seas 3 to 4 feet.
Wave Detail: South 3 feet at 6 seconds and north 2 feet at
4 seconds. A chance of thunderstorms.
FRIDAY
North winds 10 to 15 knots. Seas 2 to 4 feet. Wave
Detail: North 2 feet at 4 seconds and southeast 2 feet at
6 seconds. Showers with a slight chance of thunderstorms in the
morning, then showers likely in the afternoon.
FRIDAY NIGHT
East winds around 10 knots. Seas 2 to 3 feet.
Wave Detail: Northeast 2 feet at 5 seconds and south 2 feet at
6 seconds. Showers.
SATURDAY
Northeast winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: Southeast 2 feet at 5 seconds. A slight chance of
thunderstorms. Showers.
SATURDAY NIGHT
Southeast winds 5 to 10 knots. Seas 2 to
3 feet. Wave Detail: Southeast 2 feet at 5 seconds. Showers
likely with a slight chance of thunderstorms in the evening, then
a chance of showers and thunderstorms after midnight.
SUNDAY
North winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: North 2 feet at 3 seconds and south 2 feet at 5 seconds.
A chance of showers with a slight chance of thunderstorms in the
morning, then a slight chance of showers in the afternoon.
SUNDAY NIGHT
North winds 15 to 20 knots, increasing to 20 to
25 knots after midnight. Seas 2 to 3 feet, building to 3 to
5 feet, occasionally to 6 feet after midnight. A slight chance of
showers.
MONDAY
North winds 20 to 25 knots, diminishing to 15 to
20 knots in the afternoon. Seas 3 to 5 feet, occasionally to
6 feet.
MONDAY NIGHT
Northeast winds 10 to 15 knots. Seas 2 to 3 feet.
TUESDAY
Northeast winds 5 to 10 knots. Seas around 2 feet.
TUESDAY NIGHT
East winds around 5 knots, becoming south after
midnight. Seas 1 foot or less.
Winds and seas higher in and near thunderstorms.
$$
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