GMZ500-GMZ501-132300-
448 AM CST Sat Dec 13 2025
.SYNOPSIS FOR PASCAGOULA TO ATCHAFALAYA RIVER OUT 60 NM...
Light onshore winds of 10 knots or less and calm seas of 2 feet or
less will persist over the waters through Saturday as a broad area
of high pressure remains centered over the region. A rapid change in
conditions will then take place Saturday night and Sunday morning as
a very strong cold front moves through. Winds will turn northerly
and increase in speed to between 25 and 30 knots with higher gusts
from mid day Sunday through Monday morning. There is a decent
probability that headlines will be issued for the waters over this
time period due to high winds and rough seas anticipated. Another
high will then quickly settle over the area on Tuesday, and this
will allow winds to turn more easterly and fall back to less than
10 knots. Seas will also begin to subside as the winds decrease
Monday night into Tuesday.
$$
GMZ550-552-132300-
Coastal Waters from Port Fourchon LA to Lower Atchafalaya River LA
out 20 nm-
Coastal waters from the Southwest Pass of the Mississippi River to
Port Fourchon Louisiana out 20 NM-
448 AM CST Sat Dec 13 2025
TODAY
Southeast winds around 5 knots. Seas 1 foot or less. Wave
Detail: South 1 foot at 4 seconds. Patchy dense fog this morning.
TONIGHT
East winds around 5 knots. Seas 1 foot or less. Wave
Detail: Southeast 1 foot at 4 seconds and southwest 1 foot at
4 seconds. Patchy dense fog in the evening. Widespread dense fog
after midnight. A slight chance of showers after midnight.
Visibility 1 NM or less.
SUNDAY
North winds 20 to 25 knots with gusts up to 30 knots. Seas
2 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast 4 feet
at 4 seconds and west 1 foot at 4 seconds. Patchy dense fog in the
morning. A chance of showers with a slight chance of thunderstorms
in the morning, then a slight chance of showers in the afternoon.
Visibility 1 NM or less in the morning.
SUNDAY NIGHT
Northeast winds 20 to 25 knots with gusts up to
30 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail:
Northeast 5 feet at 4 seconds.
MONDAY
Northeast winds 15 to 20 knots, diminishing to 10 to
15 knots in the afternoon. Seas 2 to 4 feet, occasionally to 5 feet.
Wave Detail: Northeast 3 feet at 4 seconds.
MONDAY NIGHT
Northeast winds 10 to 15 knots, becoming east 5 to
10 knots after midnight. Seas 1 to 2 feet. Wave Detail: Northeast
2 feet at 3 seconds and east 2 feet at 6 seconds.
TUESDAY
East winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail:
East 2 feet at 5 seconds.
TUESDAY NIGHT
Southeast winds 5 to 10 knots. Seas 1 to 2 feet.
Wave Detail: East 2 feet at 4 seconds.
WEDNESDAY
East winds 5 to 10 knots. Seas 1 to 2 feet. Wave
Detail: Southeast 2 feet at 5 seconds. A slight chance of showers in
the afternoon.
WEDNESDAY NIGHT
Southeast winds 5 to 10 knots. Seas 2 to 3 feet.
Wave Detail: Southeast 3 feet at 7 seconds. A slight chance of
showers.
Winds and seas higher in and near thunderstorms.
$$
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