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 >

For More Weather Information:

Charleston, SC Local Forecast Office

4NM SSE Hilton Head Island SC

Marine Point Forecast

[NOTICE]

Today
WSW 16kt
2-3ft
Tonight
SW 13kt
2ft
Thursday
SW 14kt
2ft
Thursday Night
SSW 18kt
3ft
Juneteenth
WSW 20kt
3ft
Friday Night
W 12kt
2ft
Saturday
WNW 10kt
1-2ft
Saturday Night
Light Wind
1ft
Sunday
⇑SSE 9kt
1ft

Associated Zone Forecast which includes this point

Last Update: 7:22 am EDT Jun 17, 2026
Forecast Valid: 10am EDT Jun 17, 2026-6pm EDT Jun 23, 2026

View Nearby Observations

Detailed Forecast

Today

WSW wind around 16 kt. Showers and thunderstorms, mainly before 4pm, then showers likely and possibly a thunderstorm after 5pm. Seas 2 to 3 ft.

Tonight

SW wind 11 to 13 kt. A chance of showers and thunderstorms before 8pm. Seas around 2 ft.

Thursday

SW wind 12 to 14 kt, with gusts as high as 20 kt. A chance of showers and thunderstorms between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Seas around 2 ft.

Thursday Night

SSW wind 13 to 18 kt, with gusts as high as 25 kt. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Seas around 3 ft.

Juneteenth

WSW wind 15 to 20 kt. Showers and possibly a thunderstorm. Seas around 3 ft.

Friday Night

W wind around 12 kt. Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Seas around 2 ft.

Saturday

WNW wind 5 to 10 kt becoming N in the afternoon. A slight chance of showers, with thunderstorms also possible after 8am. Seas 1 to 2 ft.

Saturday Night

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

Sunday

Variable winds less than 5 kt becoming SSE 5 to 9 kt in the afternoon. Mostly sunny. Seas around 1 ft.

Winds and seas higher in and near tstms.

*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.