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fzus52 kchs 122140
cwfchs
expires:202603131100;;565798

coastal waters forecast
national weather service charleston sc
539 pm edt thu mar 12 2026

south santee river sc to savannah ga out 20 nm and savannah ga to
altamaha sound ga out 60 nm, including charleston harbor and
grays reef national marine sanctuary


amz330-131100-
charleston harbor-
539 pm edt thu mar 12 2026

...small craft advisory in effect until 11 pm edt this evening...

.tonight...n winds 15 to 20 kt with gusts to 25 kt, becoming ne
10 to 15 kt with gusts to 20 kt after midnight. waves 1 to 2 ft. 
.fri...ne winds 10 kt, becoming s in the afternoon. 
.fri night...sw winds 5 kt. 
.sat...n winds 5 kt, becoming e in the afternoon. 
.sat night...e winds 5 kt. 
.sun...e winds 5 to 10 kt. a chance of showers with a slight
chance of tstms in the morning, then showers likely with a chance
of tstms in the afternoon. 
.sun night...s winds 10 to 15 kt. a chance of tstms. showers
likely. 
.mon...sw winds 15 to 20 kt. waves 1 to 2 ft. showers with a
chance of tstms. 
.mon night...w winds 15 to 20 kt. waves 1 to 2 ft. a chance of
showers. 
.tue...nw winds 10 to 15 kt. 
.tue night...n winds 5 to 10 kt.  

winds and waves higher in and near tstms.

unless otherwise noted, waves 1 foot or less. 

charleston harbor water temperature 63 degrees. 

$$
fzus52 kchs 122140
cwfchs
expires:202603131100;;565799

coastal waters forecast
national weather service charleston sc
539 pm edt thu mar 12 2026

south santee river sc to savannah ga out 20 nm and savannah ga to
altamaha sound ga out 60 nm, including charleston harbor and
grays reef national marine sanctuary


amz350-131100-
waters from south santee river to edisto beach sc out 20 nm-
539 pm edt thu mar 12 2026

...gale warning in effect until 2 am edt friday...

.tonight...n winds 25 to 30 kt, becoming ne 20 to 25 kt with
gusts to 30 kt after midnight. seas 4 to 6 ft. wave detail: n
5 ft at 4 seconds and s 5 ft at 7 seconds. 
.fri...e winds 15 to 20 kt with gusts to 25 kt, becoming se 5 to
10 kt in the afternoon. seas 4 to 5 ft, subsiding to 3 to 4 ft in
the afternoon. wave detail: ne 5 ft at 6 seconds and se 2 ft at
9 seconds, becoming e 4 ft at 8 seconds. 
.fri night...sw winds 5 kt. seas 3 to 4 ft, subsiding to 2 to
3 ft after midnight. wave detail: e 3 ft at 5 seconds and e 3 ft
at 8 seconds, becoming e 3 ft at 7 seconds. 
.sat...n winds 5 kt, becoming e in the afternoon. seas 2 to 3 ft.
wave detail: e 3 ft at 8 seconds. 
.sat night...e winds 5 to 10 kt. seas 2 to 3 ft. wave detail: e
2 ft at 8 seconds. a slight chance of showers after midnight. 
.sun...e winds 10 to 15 kt. seas 2 to 3 ft, building to 3 to 4 ft
in the afternoon. wave detail: se 3 ft at 8 seconds, becoming se
4 ft at 7 seconds. a chance of showers with a slight chance of
tstms in the morning, then showers likely with a chance of tstms
in the afternoon. 
.sun night...s winds 15 to 20 kt, increasing to 20 to 25 kt with
gusts to 30 kt after midnight. seas 4 to 5 ft, building to 5 to
7 ft after midnight. a chance of tstms. showers.
.mon...sw winds 25 to 30 kt. seas 7 to 9 ft. showers with a
chance of tstms. 
.mon night...w winds 25 to 30 kt. seas 6 to 8 ft. a chance of
showers with a slight chance of tstms. 
.tue...nw winds 20 to 25 kt. seas 4 to 6 ft. 
.tue night...n winds 10 to 15 kt. seas 3 to 4 ft.  

winds and seas higher in and near tstms.

$$
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