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National Weather Service Marine Forecast FZUS52 KCHS

FZUS52 KCHS 150657
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
257 AM EDT Thu Apr 15 2021

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

AMZ300-151915-
257 AM EDT Thu Apr 15 2021

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
A cold front will advance through the region today, then will
stall off the Southeast coast Friday through early next week. A
series of low pressures will track along this stationary front
this weekend into early next week. Drier high pressure will then
build over the area through the second half of next week.



AMZ330-151915-
Charleston Harbor-
257 AM EDT Thu Apr 15 2021

TODAY
SW winds 15 to 20 kt. Waves 1 to 2 ft. A chance of
showers. A slight chance of tstms this afternoon.

TONIGHT
W winds 10 to 15 kt, becoming NW after midnight. A
chance of showers with a slight chance of tstms in the evening.

FRI
NE winds 10 to 15 kt with gusts to 20 kt, becoming E 5 to
10 kt in the afternoon.

FRI NIGHT
SW winds 5 to 10 kt.

SAT
SW winds 5 to 10 kt, becoming SE 10 kt in the afternoon. A
chance of showers in the morning, then showers likely in the
afternoon.

SAT NIGHT
W winds 5 to 10 kt. Showers likely, mainly in the
evening.

SUN
W winds 5 to 10 kt. A slight chance of showers.

SUN NIGHT
SW winds 5 to 10 kt.

MON
W winds 5 to 10 kt. A slight chance of showers.

MON NIGHT
N winds 5 to 10 kt. 

Mariners are reminded that winds and waves higher in and near tstms.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 68 degrees.



AMZ350-151915-
Waters from South Santee River to Edisto Beach SC out 20 NM-
257 AM EDT Thu Apr 15 2021

SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT THIS MORNING


TODAY
SW winds 15 to 20 kt. Gusts to 25 kt early. Seas 4 to 6
ft, subsiding to 3 to 4 ft. A chance of showers. A slight chance
of tstms this afternoon.

TONIGHT
W winds 10 to 15 kt, becoming NW 15 to 20 kt after
midnight. Seas 3 to 4 ft. A chance of showers with a slight
chance of tstms in the evening.

FRI
NE winds 15 to 20 kt, becoming E 5 to 10 kt in the
afternoon. Seas 3 to 4 ft, subsiding to 2 to 3 ft in the
afternoon.

FRI NIGHT
S winds 5 kt. Seas 2 ft. A slight chance of showers
after midnight.

SAT
SE winds 5 to 10 kt. Seas 2 ft. A chance of showers in the
morning, then showers likely with a slight chance of tstms in the
afternoon.

SAT NIGHT
S winds 5 to 10 kt, becoming NW after midnight. Seas
2 ft. A chance of showers.

SUN
W winds 5 to 10 kt. Seas 2 ft. A slight chance of showers.

SUN NIGHT
SW winds 10 kt. Seas 1 foot. A slight chance of
showers.

MON
W winds 5 to 10 kt. Seas 2 ft. A slight chance of showers.

MON NIGHT
N winds 5 to 10 kt. Seas 2 to 3 ft. A slight chance
of showers. 

Mariners are reminded that winds and seas higher in and near tstms.



AMZ352-151915-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
257 AM EDT Thu Apr 15 2021

TODAY
SW winds 15 kt, diminishing to 10 to 15 kt with gusts to
20 kt. Seas 3 to 4 ft. A chance of showers this morning, then
showers likely with a slight chance of tstms this afternoon.

TONIGHT
W winds 10 to 15 kt, becoming NW with gusts to 20 kt
after midnight. Seas 2 to 3 ft. A chance of showers with a slight
chance of tstms in the evening.

FRI
NE winds 10 to 15 kt. Seas 2 to 3 ft.

FRI NIGHT
S winds 5 kt. Seas 2 ft. A chance of showers after
midnight.

SAT
SE winds 5 to 10 kt. Seas 2 ft in the morning, then seas
1 foot. Showers likely in the morning, then showers with a slight
chance of tstms in the afternoon.

SAT NIGHT
SW winds 5 to 10 kt, becoming W after midnight. Seas
1 foot. Showers with a slight chance of tstms in the evening,
then a chance of showers after midnight.

SUN
W winds 5 to 10 kt. Seas 1 foot. A chance of showers.

SUN NIGHT
SW winds 5 to 10 kt. Seas 1 foot. A slight chance of
showers.

MON
W winds 5 to 10 kt. Seas 1 foot. A chance of showers.

MON NIGHT
N winds 5 to 10 kt. Seas 2 ft. A slight chance of
showers. 

Mariners are reminded that winds and seas higher in and near tstms.



AMZ354-151915-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
257 AM EDT Thu Apr 15 2021

TODAY
SW winds 10 to 15 kt. Seas 3 to 4 ft, subsiding to 2 to
3 ft this afternoon. A chance of showers this morning. Showers
likely with a slight chance of tstms this afternoon.

TONIGHT
W winds 10 kt, becoming NW after midnight. Seas 2 to
3 ft. A chance of showers with a slight chance of tstms in the
evening.

FRI
NE winds 10 to 15 kt, diminishing to 5 to 10 kt in the
afternoon. Seas 2 to 3 ft.

FRI NIGHT
SE winds 5 kt. Seas 2 ft. A chance of showers after
midnight.

SAT
E winds 5 to 10 kt, becoming SE in the afternoon. Seas
2 ft in the morning, then seas 1 foot. Showers likely in the
morning, then showers with a slight chance of tstms in the
afternoon.

SAT NIGHT
SW winds 5 to 10 kt, becoming W after midnight. Seas
1 foot. A slight chance of tstms. Showers.

SUN
W winds 5 to 10 kt. Seas 2 ft. A chance of showers.

SUN NIGHT
SW winds 5 to 10 kt. Seas 1 foot. A chance of
showers.

MON
W winds 5 to 10 kt. Seas 1 foot. A chance of showers.

MON NIGHT
NW winds 5 to 10 kt. Seas 1 foot. A chance of
showers. 

Mariners are reminded that winds and seas higher in and near tstms.



AMZ374-151915-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
257 AM EDT Thu Apr 15 2021

TODAY
SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4
ft. Showers likely with a slight chance of tstms this afternoon.

TONIGHT
W winds 10 to 15 kt, becoming NW after midnight. Seas
3 to 4 ft. A chance of showers with a slight chance of tstms in
the evening, then a slight chance of showers after midnight.

FRI
NE winds 10 to 15 kt. Seas 3 to 4 ft.

FRI NIGHT
E winds 5 kt. Seas 2 to 3 ft. A chance of showers
after midnight.

SAT
E winds 5 to 10 kt, becoming SE in the afternoon. Seas
2 ft. Showers likely in the morning, then showers with a slight
chance of tstms in the afternoon.

SAT NIGHT
SW winds 5 to 10 kt, becoming W after midnight. Seas
2 ft. A slight chance of tstms. Showers.

SUN
NW winds 5 to 10 kt. Seas 2 ft. A chance of showers.

SUN NIGHT
SW winds 5 to 10 kt. Seas 2 ft. A chance of showers.

MON
W winds 5 to 10 kt. Seas 2 ft. A chance of showers.

MON NIGHT
NW winds 5 to 10 kt. Seas 2 ft. A chance of showers.

Mariners are reminded that winds and seas higher in and near tstms.