Above Normal Temperatures, Strong Thunderstorms, Tropical Development Being Monitored

Well above normal temperatures are forecast to shift from the northern Plains through the Northeast U.S. over the long holiday weekend. A few strong to severe thunderstorm will be possible as well along with a potential for excessive rainfall. A tropical or subtropical depression could form off the Southeast U.S. coast over the weekend while drifting northward to northeastward. Read More >

Coastal Waters Forecast for Coastal Waters from Port Fourchon LA to Lower Atchafalaya River LA out 20 nm (GMZ550) (Text-Only)
NWS Forecast for: Coastal Waters from Port Fourchon LA to Lower Atchafalaya River LA out 20 nm (GMZ550)
Issued by: National Weather Service New Orleans/Baton Rouge, LA
Last Update: 1240 AM CDT Sat Jul 5 2025
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Rest Of Tonight: West winds 5 to 10 knots. Seas 1 foot or less. Wave detail: west 1 foot at 3 seconds. A slight chance of showers and thunderstorms.

Saturday: North winds 5 to 10 knots. Seas 1 foot or less. Wave detail: southwest 1 foot at 3 seconds and northwest 1 foot at 3 seconds. A chance of showers and thunderstorms.

Saturday Night: Northwest winds around 5 knots. Seas 1 foot or less. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight.

Sunday: North winds around 5 knots, becoming south in the afternoon. Seas 1 foot or less. A chance of thunderstorms. Showers likely, mainly in the morning.

Sunday Night: Southwest winds around 5 knots. Seas 1 foot or less. Wave detail: southwest 1 foot at 3 seconds. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight.

Monday: Northwest winds around 5 knots, becoming south in the afternoon. Seas 1 foot or less. Wave detail: southwest 1 foot at 3 seconds. A chance of thunderstorms. Showers likely, mainly in the morning.

Monday Night: Southwest winds around 5 knots. Seas 1 foot or less. Wave detail: southwest 1 foot at 3 seconds. A slight chance of showers and thunderstorms after midnight.

Tuesday: Southwest winds around 5 knots. Seas 1 foot or less. Wave detail: southwest 1 foot at 3 seconds. A chance of showers and thunderstorms.

Tuesday Night: Southwest winds 5 to 10 knots. Seas 1 foot or less. Wave detail: southwest 1 foot at 3 seconds and south 1 foot at 6 seconds. A slight chance of showers and thunderstorms after midnight.

Wednesday: West winds 5 to 10 knots. Seas 1 foot or less. Wave detail: southwest 1 foot at 4 seconds. A chance of showers and thunderstorms.

Wednesday Night: West winds 5 to 10 knots. Seas 1 to 2 feet. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight.

winds and seas higher in and near thunderstorms.







Zone Forecast: Coastal Waters from Port Fourchon LA to Lower Atchafalaya River LA out 20 nm (GMZ550)

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