GMZ570-210400-
Coastal waters from Port Fourchon Louisiana to Lower Atchafalaya
River LA from 20 to 60 NM-
1033 AM CDT Mon Jul 20 2026
THIS AFTERNOON
Northwest winds 10 to 15 knots with gusts up to
20 knots. Seas 2 to 3 feet. Wave Detail: Northwest 3 feet at
5 seconds.
TONIGHT
West winds 15 to 20 knots with gusts up to 25 knots. Seas
3 to 5 feet, occasionally to 6 feet. Wave Detail: West 4 feet at
5 seconds and east 1 foot at 6 seconds. A slight chance of showers
and thunderstorms in the evening, then a chance of showers and
thunderstorms after midnight.
TUESDAY
Northwest winds 15 to 20 knots with gusts up to 25 knots.
Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: West 5 feet
at 5 seconds and east 2 feet at 7 seconds. A chance of showers and
thunderstorms until late afternoon, then showers and thunderstorms
likely late.
TUESDAY NIGHT
West winds 20 to 25 knots with gusts up to
30 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail:
West 7 feet at 6 seconds and east 2 feet at 7 seconds. A chance of
thunderstorms.
WEDNESDAY
Tropical storm conditions possible. West winds 20 to
25 knots with gusts up to 30 knots. Seas 6 to 8 feet, occasionally
to 10 feet. Wave Detail: West 8 feet at 7 seconds and east 1 foot at
8 seconds. A chance of thunderstorms. Showers.
WEDNESDAY NIGHT
Tropical storm conditions possible.
THURSDAY
Southwest winds 25 to 30 knots with gusts up to
50 knots, diminishing to 15 to 20 knots with gusts up to 25 knots in
the afternoon. Seas 6 to 9 feet, occasionally to 11 feet, subsiding
to 4 to 6 feet, occasionally to 8 feet in the afternoon. Wave
Detail: West 9 feet at 7 seconds. Thunderstorms likely in the
morning. Showers likely. A chance of thunderstorms in the afternoon.
THURSDAY NIGHT
Southwest winds 10 to 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: Southwest 4 feet at 6 seconds.
A chance of showers and thunderstorms.
FRIDAY
Southwest winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: South 3 feet at 5 seconds. A chance of showers and
thunderstorms.
FRIDAY NIGHT
South winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 5 seconds. A chance of showers and
thunderstorms early in the evening. A slight chance of showers and
thunderstorms after midnight.
Winds and seas higher in and near thunderstorms.
$$
