Excessive Rainfall and Tropical Storm in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce considerable, potentially life-threatening, flooding across the lower Mississippi River Valley and central Great Lakes region through tonight. Tropical Storm Arthur will move northeastward along the Texas coast today and then move inland over southwestern Louisiana by tonight. An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana. Read More >

For More Weather Information:

Charleston, SC Local Forecast Office

5NM N Rattlesnake Shoal MR

Marine Point Forecast

[NOTICE]

This Afternoon
SW 12kt
< 1ft
Tonight
SW 11kt
< 1ft
Thursday
SSW 15kt
< 1ft
Thursday Night
SW 13kt
< 1ft
Juneteenth
WSW 15kt
< 1ft
Friday Night
SW 10kt
< 1ft
Saturday
NW 7kt
< 1ft
Saturday Night
Light Wind
< 1ft
Sunday
⇑S 9kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 7:22 am EDT Jun 17, 2026
Forecast Valid: 12pm EDT Jun 17, 2026-6pm EDT Jun 23, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

SW wind around 12 kt. Showers and thunderstorms likely before 2pm, then a chance of showers between 2pm and 4pm, then a chance of showers and thunderstorms after 4pm. Seas 1 ft or less.

Tonight

SW wind around 11 kt, with gusts as high as 20 kt. A slight chance of showers and thunderstorms before 7pm. Seas 1 ft or less.

Thursday

SSW wind 10 to 15 kt, with gusts as high as 23 kt. A chance of showers and thunderstorms, mainly between 3pm and 5pm. Seas 1 ft or less.

Thursday Night

SW wind around 13 kt, with gusts as high as 23 kt. A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 5am, then showers likely after 5am. Seas 1 ft or less.

Juneteenth

WSW wind around 15 kt, with gusts as high as 25 kt. Showers, with thunderstorms also possible after 8am. Seas 1 ft or less.

Friday Night

SW wind 8 to 10 kt becoming W after midnight. Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms after 8pm. Seas 1 ft or less.

Saturday

NW wind around 7 kt becoming ENE in the afternoon. Partly sunny. Seas 1 ft or less.

Saturday Night

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

Sunday

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

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.