Remnants of Arthur and Heavy Rainfall Across the South; Severe Weather for the East

Potential life threatening flash flooding across the northern Gulf Coast states as the remnants of Arthur track across the area. Remember, turn around - don't drown. In addition, severe thunderstorms with tornadoes are possible with the circulation of this storm. The threat for more severe thunderstorms will occur across portions of the Northeast, mid-Atlantic and central Appalachian's. Read More >

Hazardous Weather Conditions

For More Weather Information:

Charleston, SC Local Forecast Office

Charleston Harbor MR

Marine Point Forecast

[NOTICE]

Tonight
SSW 15kt
< 1ft

Small Craft Advisory
Juneteenth
SW 22kt⇓
< 1ft

Small Craft Advisory
Friday Night
WSW 9kt
< 1ft
Saturday
N 7kt
< 1ft
Saturday Night
Light Wind
< 1ft
Sunday
⇑SSE 10kt
< 1ft
Sunday Night
SSE 8kt
< 1ft
Monday
⇑SSW 14kt
< 1ft
Monday Night
SSW 12kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 2:30 pm EDT Jun 18, 2026
Forecast Valid: 6pm EDT Jun 18, 2026-6pm EDT Jun 25, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT EDT TONIGHT

Tonight

SSW wind 12 to 15 kt, with gusts as high as 23 kt. A chance of showers and thunderstorms, mainly after 4am. Seas 1 ft or less.

Juneteenth

SW wind 19 to 22 kt decreasing to 16 to 19 kt in the afternoon. Winds could gust as high as 32 kt. Showers and thunderstorms, mainly before 11am. Seas 1 ft or less.

Friday Night

WSW wind 5 to 9 kt. A slight chance of showers and thunderstorms before 4am, then a slight chance of showers and thunderstorms after 5am. Seas 1 ft or less.

Saturday

N wind around 7 kt becoming ESE in the afternoon. A chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

Saturday Night

Variable winds 5 kt or less. A chance of showers and thunderstorms before 8pm. Seas 1 ft or less.

Sunday

Variable winds less than 5 kt becoming SSE 5 to 10 kt in the afternoon. Mostly sunny. Seas 1 ft or less.

Sunday Night

SSE wind around 8 kt becoming SSW after midnight. Partly cloudy. Seas 1 ft or less.

Monday

SSW wind 8 to 11 kt increasing to 11 to 14 kt in the afternoon. Winds could gust as high as 20 kt. A slight chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

Monday Night

SSW wind 10 to 12 kt. A slight chance of showers and thunderstorms before 8pm. 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.