GMZ400-110900-
343 PM CDT Tue Mar 10 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...
Conditions over the waters will progressively degrade from tonight
through Wednesday afternoon when a frontal system swipes across
the north Gulf. A brief period of onshore winds sustained around
20 knots will develop tonight in conjunction with a nocturnal jet
moving overhead. The Lakes and western coastal waters out to 60
NM will be in an Advisory from 10 PM tonight to 7 AM Wednesday.
Conditions will improve slightly into Wednesday morning with
scattered showers and thunderstorms, some strong to severe,
expected during the afternoon and evening. Winds turn offshore
and strengthen quickly in the wake of the front with rapidly
building seas to follow. Winds steadily increase thru Thursday
morning, and a brief period of gale force winds and gusts will
be possible until noon. Winds and seas will fall thereafter,
turning to onshore once again by Friday afternoon.
$$
GMZ435-110900-
Vermilion and West Cote Blanche Bays-
343 PM CDT Tue Mar 10 2026
SMALL CRAFT EXERCISE CAUTION IN EFFECT FROM WEDNESDAY MORNING
THROUGH LATE WEDNESDAY NIGHT
TONIGHT
Southeast winds 10 to 15 knots. Bay waters choppy.
Patchy fog late this evening.
WEDNESDAY
South winds 10 to 15 knots, increasing to 15 to
20 knots in the afternoon. Bay waters rough. A chance of showers
and thunderstorms in the afternoon.
WEDNESDAY NIGHT
South winds 15 to 20 knots, becoming northwest
20 to 25 knots with gusts up to 30 knots after midnight. Bay
waters very rough. Showers with thunderstorms likely.
THURSDAY
North winds 25 to 30 knots, diminishing to 20 to
25 knots in the afternoon. Bay waters extremely rough.
THURSDAY NIGHT
North winds 10 to 15 knots with gusts up to
20 knots, becoming northeast 5 to 10 knots after midnight. Bay
waters choppy.
FRIDAY
East winds 5 to 10 knots, becoming south in the
afternoon. Bay waters light chop.
FRIDAY NIGHT
South winds around 5 knots. Bay waters smooth.
SATURDAY
Southeast winds around 5 knots. Bay waters smooth.
SATURDAY NIGHT
Southeast winds 5 to 10 knots. Bay waters light
chop.
SUNDAY
South winds 5 to 10 knots, increasing to 10 to 15 knots
in the afternoon. Bay waters choppy.
SUNDAY NIGHT
Southwest winds around 10 knots, becoming
northwest 15 to 20 knots after midnight. Bay waters rough. A
chance of showers after midnight.
Winds and waves higher in and near thunderstorms.
$$
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