GMZ500-GMZ501-060800-
201 PM CDT Wed Aug 5 2026
.SYNOPSIS FOR PASCAGOULA TO ATCHAFALAYA RIVER OUT 60 NM...
Surface high-pressure axis over the southern Gulf is being absorbed
by the Bermuda ridge. The low-level pressure gradient may tighten
slightly Friday into the weekend as surface high pressure becomes
better established over the eastern Gulf while lower pressures
persist over the southern Plains and lower Mississippi Valley. This
will alter flow to more of a south to southeast direction Thursday
and then southeasterly to easterly through the weekend. Speeds
should generally remain around 5 to 10 knots, although periods of
10 to 15 knots will be possible over the outer waters as an easterly
fetch becomes better established late in the week. Seas will
generally remain 1 to 2 feet through Thursday.
Increasing Gulf moisture will also bring a gradual increase in
showers and thunderstorms beginning Thursday and continuing through
the weekend and into early next week. Convection will be most
common, in typical summertime fashion, over the coastal waters
during the overnight and morning hours. Then activity shifts inland
with the developing sea breeze during the afternoons.
$$
GMZ550-552-162300-
Coastal Waters from Port Fourchon LA to Lower Atchafalaya River LA
out 20 nm-
Coastal waters from the Southwest Pass of the Mississippi River to
Port Fourchon Louisiana out 20 NM-
536 AM CDT Thu Apr 16 2026
TODAY
Southeast winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 7 seconds.
TONIGHT
South winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail:
Southeast 2 feet at 7 seconds.
FRIDAY
Southeast winds 5 to 10 knots. Seas 1 to 2 feet. Wave
Detail: Southeast 2 feet at 6 seconds.
FRIDAY NIGHT
South winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 6 seconds.
SATURDAY
South winds 5 to 10 knots. Seas 1 to 2 feet. Wave
Detail: Southeast 2 feet at 5 seconds.
SATURDAY NIGHT
South winds 5 to 10 knots, becoming west 10 to
15 knots after midnight. Seas 1 to 2 feet. Wave Detail: Southeast
1 foot at 5 seconds. A slight chance of showers and thunderstorms
after midnight.
SUNDAY
Northeast winds 20 to 25 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Wave Detail: North 4 feet at 4 seconds. A
slight chance of showers and thunderstorms in the morning.
SUNDAY NIGHT
Northeast winds 20 to 25 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Wave Detail: East 5 feet at 5 seconds.
MONDAY
East winds 20 to 25 knots. Seas 3 to 5 feet, occasionally
to 6 feet. Wave Detail: East 5 feet at 6 seconds.
MONDAY NIGHT
East winds 15 to 20 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Wave Detail: East 4 feet at 6 seconds.
Winds and seas higher in and near thunderstorms.
$$
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