Excessive Rainfall and Potential Tropical Cyclone in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce locally considerable flash flooding over parts of the northwestern Gulf Coast, lower Mississippi River Valley, and Deep South through Thursday. Potential Tropical Cyclone One is forecast to become a tropical storm (Arthur) as it moves along or just off the northwestern Gulf coast through Wednesday. An outbreak of severe weather is forecast in the Midwest Wednesday. Read More >

Hazardous Weather Conditions

Small Craft Advisory in effect from June 17, 12:00 AM CDT until June 19, 06:00 AM CDT

For More Weather Information:

New Orleans/Baton Rouge, LA Local Forecast Office

11NM N Grand Isle LA

Marine Point Forecast

[NOTICE]

Tonight
Low: 81 °F
S 15kt
< 1ft

Small Craft Advisory
Wednesday
High: 86 °F
S 20kt
< 1ft

Small Craft Advisory
Wednesday Night
Low: 83 °F
S 25kt
< 1ft

Small Craft Advisory
Thursday
High: 86 °F
SSW 20kt
1ft

Small Craft Advisory
Thursday Night
Low: 83 °F
S 20kt
< 1ft

Small Craft Advisory
Juneteenth
High: 86 °F
SSW 15kt
< 1ft
Friday Night
Low: 82 °F
SSW 10kt
< 1ft
Saturday
High: 86 °F
S 10kt
< 1ft
Saturday Night
Low: 83 °F
S 10kt
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 5:18 pm CDT Jun 16, 2026
Forecast Valid: 10pm CDT Jun 16, 2026-6pm CDT Jun 23, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT CDT TONIGHT THROUGH

Tonight

S wind 5 to 15 kt. A chance of showers and thunderstorms. Seas 1 ft or less.

Wednesday

S wind 15 to 20 kt, with gusts as high as 25 kt. A chance of showers and thunderstorms, mainly after 11am. Seas 1 ft or less.

Wednesday Night

S wind 20 to 25 kt. Showers and thunderstorms likely, then showers and possibly a thunderstorm after 1am. Seas 1 ft or less.

Thursday

SSW wind 15 to 20 kt, with gusts as high as 25 kt. Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Seas around 1 ft.

Thursday Night

S wind 15 to 20 kt. A chance of showers and thunderstorms before 1am. Seas 1 ft or less.

Juneteenth

SSW wind 10 to 15 kt. A chance of showers and thunderstorms after 1pm. Seas 1 ft or less.

Friday Night

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

Saturday

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

Saturday Night

S wind 5 to 10 kt. Mostly cloudy. Seas 1 ft or less.

*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.