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17NM E Grand Isle LA

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 4:32 pm CDT May 19, 2026
Forecast Valid: 5pm CDT May 19, 2026-6pm CDT May 26, 2026

Tonight

SE wind 5 to 10 kt. Partly cloudy. Seas around 1 ft.

Wednesday

SE wind around 10 kt. Mostly sunny. Seas 1 ft or less.

Wednesday Night

Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.

Thursday

SSE wind 5 to 10 kt. A slight chance of showers and thunderstorms. Seas 1 ft or less.

Thursday Night

SSE wind around 10 kt. A chance of showers and thunderstorms after 1am. Seas around 1 ft.

Friday

SSE wind around 10 kt. A chance of showers and thunderstorms, mainly before 1pm. Seas 1 ft or less.

Friday Night

SSE wind 5 to 10 kt. A chance of showers and thunderstorms, mainly before 1am. Seas around 1 ft.

Saturday

SSE wind 5 to 10 kt. A slight chance of showers and thunderstorms. Seas 1 ft or less.

Saturday Night

Variable winds 5 kt or less. A slight chance of showers and thunderstorms. Seas around 1 ft.

Winds and seas higher in and near thunderstorms.

*Notices:

This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.