(1/6)
Latest Coastal Waters Forecast by KCHS
Issued 12/18/2025 1:02 AM America/New_York.
Valid through 12/18/2025 1:30 PM America/New_York.
fzus52 kchs 180602
cwfchs
expires:202512181830;;780100
coastal waters forecast
national weather service charleston sc
102 am est thu dec 18 2025
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
amz350-181830-
waters from south santee river to edisto beach sc out 20 nm-
102 am est thu dec 18 2025
...small craft advisory in effect from this evening through
friday evening...
.rest of tonight...e winds 5 to 10 kt. seas 2 to 3 ft. wave
detail: s 2 ft at 4 seconds and se 2 ft at 10 seconds. a slight
chance of rain.
.thu...se winds 10 to 15 kt with gusts to 20 kt. seas 3 to 4 ft,
building to 4 to 5 ft in the afternoon. wave detail: se 4 ft at
9 seconds and se 2 ft at 4 seconds, becoming se 5 ft at
7 seconds. a slight chance of rain in the morning, then rain with
a chance of tstms in the afternoon.
.thu night...s winds 15 to 20 kt, becoming sw 20 to 25 kt after
midnight. seas 4 to 6 ft, building to 6 to 8 ft after midnight.
wave detail: se 6 ft at 8 seconds, becoming se 8 ft at 8 seconds.
rain with a chance of tstms in the evening, then a chance of rain
with a slight chance of tstms after midnight. vsby 1 nm or less.
.fri...w winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. seas 6 to 8 ft, subsiding to 5 to 7 ft in the
afternoon. wave detail: s 8 ft at 9 seconds and sw 3 ft at
5 seconds, becoming se 6 ft at 9 seconds and sw 4 ft at
7 seconds. a slight chance of rain in the morning.
.fri night...nw winds 10 to 15 kt, becoming n after midnight.
seas 4 to 5 ft, subsiding to 3 to 4 ft after midnight. wave
detail: se 4 ft at 9 seconds and sw 3 ft at 7 seconds, becoming
se 4 ft at 9 seconds and sw 2 ft at 5 seconds.
.sat...ne winds 5 to 10 kt. seas 3 to 4 ft. wave detail: se 3 ft
at 9 seconds and sw 1 foot at 5 seconds.
.sat night...e winds 5 kt, becoming w after midnight. seas 3 ft.
.sun...w winds 5 to 10 kt. seas 3 ft.
.sun night...n winds 15 to 20 kt. seas 4 to 6 ft.
.mon...ne winds 20 to 25 kt. seas 4 to 6 ft.
.mon night...ne winds 15 to 20 kt. seas 4 to 6 ft.
winds and seas higher in and near tstms.
$$
(2/6)
Latest Coastal Waters Forecast by KCHS
Issued 12/18/2025 1:02 AM America/New_York.
Valid through 12/18/2025 1:30 PM America/New_York.
fzus52 kchs 180602
cwfchs
expires:202512181830;;780101
coastal waters forecast
national weather service charleston sc
102 am est thu dec 18 2025
south santee river sc to savannah ga out 20 nm and savannah ga to
altamaha sound ga out 60 nm, including charleston harbor and
grays reef national marine sanctuary
amz352-181830-
waters from edisto beach sc to savannah ga out 20 nm-
102 am est thu dec 18 2025
...small craft advisory in effect from this evening through
friday afternoon...
.rest of tonight...e winds 5 to 10 kt. seas 2 to 3 ft. wave
detail: se 3 ft at 10 seconds. a chance of rain, then a slight
chance of rain late.
.thu...se winds 10 to 15 kt. seas 3 to 4 ft, building to 4 to
5 ft in the afternoon. wave detail: se 4 ft at 9 seconds,
becoming se 4 ft at 7 seconds. a chance of rain in the morning,
then rain likely with a chance of tstms in the afternoon.
.thu night...s winds 10 to 15 kt, becoming sw 15 to 20 kt with
gusts to 25 kt after midnight. seas 4 to 5 ft, building to 5 to 7
ft. wave detail: se 5 ft at 8 seconds, becoming se 6 ft at 8
seconds. a chance of tstms. rain, mainly in the evening. vsby 1 nm
or less.
.fri...w winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. seas 5 to 7 ft, subsiding to 3 to 5 ft in the
afternoon. wave detail: se 6 ft at 9 seconds. a slight chance of
rain in the morning.
.fri night...nw winds 10 to 15 kt, becoming n after midnight.
seas 3 to 4 ft. wave detail: se 4 ft at 9 seconds and w 2 ft at
5 seconds.
.sat...ne winds 5 to 10 kt. seas 3 to 4 ft. wave detail: se 3 ft
at 9 seconds.
.sat night...e winds 5 kt, becoming w after midnight. seas 3 ft.
.sun...w winds 5 kt. seas 3 ft.
.sun night...n winds 15 to 20 kt. seas 4 to 5 ft.
.mon...ne winds 15 to 20 kt. seas 4 to 6 ft.
.mon night...ne winds 15 to 20 kt. seas 4 to 6 ft.
winds and seas higher in and near tstms.
$$
(3/6)
Latest Coastal Waters Forecast by KCHS
Issued 12/18/2025 1:02 AM America/New_York.
Valid through 12/18/2025 1:30 PM America/New_York.
fzus52 kchs 180602
cwfchs
expires:202512181830;;780102
coastal waters forecast
national weather service charleston sc
102 am est thu dec 18 2025
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
amz354-181830-
waters from savannah ga to altamaha sound ga out 20 nm, including
grays reef national marine sanctuary-
102 am est thu dec 18 2025
.rest of tonight...e winds 10 kt. seas 2 to 3 ft. wave detail: e
3 ft at 10 seconds. a chance of rain, then a chance of rain with
a slight chance of tstms late.
.thu...se winds 10 to 15 kt. seas 3 to 4 ft. wave detail: se 4 ft
at 10 seconds. a chance of rain. a chance of tstms in the
afternoon.
.thu night...s winds 10 to 15 kt, becoming sw 15 to 20 kt after
midnight. seas 4 to 5 ft, building to 4 to 6 ft after midnight.
wave detail: se 5 ft at 8 seconds, becoming se 6 ft at 8 seconds.
a chance of tstms. rain, mainly in the evening. vsby 1 nm or
less.
.fri...w winds 10 to 15 kt with gusts to 20 kt. seas 4 to 6 ft,
subsiding to 4 to 5 ft in the afternoon. wave detail: se 6 ft at
9 seconds, becoming se 5 ft at 9 seconds. a slight chance of rain
in the morning.
.fri night...nw winds 10 to 15 kt. seas 3 to 4 ft. wave detail:
se 4 ft at 9 seconds.
.sat...ne winds 5 to 10 kt. seas 3 ft. wave detail: e 3 ft at
9 seconds.
.sat night...variable winds 5 kt. seas 2 to 3 ft.
.sun...nw winds 5 to 10 kt. seas 2 to 3 ft.
.sun night...n winds 15 to 20 kt. seas 3 to 4 ft.
.mon...ne winds 20 to 25 kt. seas 4 to 6 ft.
.mon night...ne winds 15 to 20 kt. seas 4 to 6 ft.
winds and seas higher in and near tstms.
$$
(4/6)
Latest Coastal Waters Forecast by KCHS
Issued 12/18/2025 1:02 AM America/New_York.
Valid through 12/18/2025 1:30 PM America/New_York.
fzus52 kchs 180602
cwfchs
expires:202512181830;;780103
coastal waters forecast
national weather service charleston sc
102 am est thu dec 18 2025
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
amz374-181830-
waters from savannah ga to altamaha sound ga from 20 to 60 nm-
102 am est thu dec 18 2025
...small craft advisory in effect from this evening through
friday evening...
.rest of tonight...se winds 10 to 15 kt. seas 4 to 5 ft. wave
detail: se 4 ft at 9 seconds. a slight chance of rain. a slight
chance of tstms late.
.thu...se winds 10 to 15 kt with gusts to 20 kt. seas 4 to 5 ft,
building to 4 to 6 ft late afternoon. wave detail: se 5 ft at 7
seconds, becoming se 6 ft at 7 seconds. a chance of rain in the
morning, then rain likely with a chance of tstms in the afternoon.
.thu night...sw winds 15 to 20 kt with gusts to 30 kt. seas 5 to
7 ft, building to 6 to 8 ft after midnight. wave detail: se 7 ft
at 8 seconds. a chance of tstms. rain, mainly in the evening.
vsby 1 nm or less.
.fri...w winds 15 to 20 kt with gusts to 30 kt. seas 6 to 8 ft,
subsiding to 5 to 7 ft in the afternoon. wave detail: se 7 ft at
9 seconds and sw 5 ft at 5 seconds, becoming se 5 ft at 9 seconds
and w 4 ft at 5 seconds. a slight chance of rain in the morning.
.fri night...nw winds 10 to 15 kt. seas 4 to 5 ft. wave detail:
se 4 ft at 9 seconds and nw 3 ft at 4 seconds.
.sat...ne winds 5 to 10 kt. seas 3 to 4 ft. wave detail: se 4 ft
at 9 seconds and n 2 ft at 3 seconds.
.sat night...se winds 5 kt, becoming w after midnight. seas 3 to
4 ft.
.sun...nw winds 5 to 10 kt. seas 3 to 4 ft.
.sun night...n winds 20 to 25 kt. seas 4 to 6 ft.
.mon...ne winds 20 to 25 kt. seas 6 to 8 ft. a slight chance of
rain.
.mon night...e winds 15 to 20 kt. seas 6 to 8 ft. a slight chance
of rain.
winds and seas higher in and near tstms.
$$
(5/6)
Latest Coastal Waters Forecast by KJAX
Issued 12/18/2025 12:29 AM America/New_York.
Valid through 12/18/2025 3:00 PM America/New_York.
fzus52 kjax 180529
cwfjax
expires:202512182000;;778592
coastal waters forecast for northeast florida/southeast georgia
national weather service jacksonville fl
1229 am est thu dec 18 2025
atlantic coastal waters from altamaha sound ga to flagler beach
fl out to 60 nm.
seas are provided as a range of the average height of the highest
1/3 of the waves, along with the occasional height of the average
highest 1/10 of the waves.
amz450-452-454-182000-
coastal waters from altamaha sound to fernandina beach fl out
20 nm-
coastal waters from fernandina beach to st. augustine fl out
20 nm-
coastal waters from st. augustine to flagler beach fl out 20 nm-
1229 am est thu dec 18 2025
.rest of tonight...east winds 5 to 10 knots. seas 3 to 4 feet,
occasionally to 5 feet. wave detail: southeast 4 feet at
6 seconds and east 3 feet at 9 seconds. intracoastal waters light
chop. a chance of showers.
.thursday...southeast winds 10 to 15 knots. seas 3 to 5 feet,
occasionally to 6 feet. wave detail: east 4 feet at 6 seconds and
east 4 feet at 10 seconds. intracoastal waters a moderate chop. a
chance of showers with a slight chance of thunderstorms.
.thursday night...south winds 10 to 15 knots. seas 4 to 5 feet,
occasionally to 6 feet. wave detail: southeast 5 feet at
7 seconds and southwest 2 feet at 5 seconds. intracoastal waters
a moderate chop. a chance of showers with a slight chance of
thunderstorms.
.friday...west winds 10 to 15 knots, becoming northwest in the
afternoon. seas 3 to 5 feet, occasionally to 6 feet. wave detail:
southeast 5 feet at 8 seconds and west 2 feet at 4 seconds.
intracoastal waters a moderate chop.
.friday night and saturday...northeast winds 10 to 15 knots. seas
3 to 4 feet, occasionally to 5 feet. wave detail: east 4 feet at
9 seconds and north 3 feet at 4 seconds. intracoastal waters a
moderate chop.
.saturday night...northeast winds around 5 knots, becoming
northwest after midnight. seas 2 to 3 feet. wave detail: east
3 feet at 9 seconds. intracoastal waters smooth.
.sunday...north winds 5 to 10 knots, becoming northeast 20 to
25 knots. seas 2 to 4 feet, occasionally to 5 feet, building to
4 to 6 feet, occasionally to 8 feet after midnight. intracoastal
waters rough.
.monday...northeast winds 20 to 25 knots. seas 5 to 8 feet,
occasionally to 10 feet. intracoastal waters rough.
winds and waves higher in and near thunderstorms.
$$
(6/6)
Latest Coastal Waters Forecast by KJAX
Issued 12/18/2025 12:29 AM America/New_York.
Valid through 12/18/2025 3:00 PM America/New_York.
fzus52 kjax 180529
cwfjax
expires:202512182000;;778593
coastal waters forecast for northeast florida/southeast georgia
national weather service jacksonville fl
1229 am est thu dec 18 2025
atlantic coastal waters from altamaha sound ga to flagler beach
fl out to 60 nm.
seas are provided as a range of the average height of the highest
1/3 of the waves, along with the occasional height of the average
highest 1/10 of the waves.
amz470-472-474-182000-
waters from altamaha sound ga to fernandina beach fl from 20 to
60 nm-
waters from fernandina beach to st. augustine fl from 20 to 60 nm-
waters from st. augustine to flagler beach fl from 20 to 60 nm-
1229 am est thu dec 18 2025
...small craft advisory in effect from this evening through
friday morning...
.rest of tonight...southeast winds 15 to 20 knots, diminishing to
10 to 15 knots. seas 4 to 6 feet, occasionally to 8 feet. wave
detail: southeast 5 feet at 5 seconds and east 5 feet at
9 seconds. a slight chance of showers late this evening, then a
chance of showers.
.thursday...southeast winds 15 to 20 knots. seas 5 to 7 feet,
occasionally to 9 feet. wave detail: southeast 6 feet at
7 seconds. a chance of showers with a slight chance of
thunderstorms.
.thursday night...south winds 15 to 20 knots, becoming southwest
20 to 25 knots after midnight. seas 5 to 8 feet, occasionally to
10 feet. wave detail: southeast 7 feet at 8 seconds and southwest
3 feet at 5 seconds. a chance of showers with a slight chance of
thunderstorms.
.friday...west winds 15 to 20 knots, becoming northwest 10 to
15 knots in the afternoon. seas 5 to 7 feet, occasionally to
9 feet. wave detail: southeast 6 feet at 8 seconds and west
3 feet at 5 seconds. a slight chance of showers in the morning.
.friday night and saturday...northeast winds 10 to 15 knots. seas
3 to 5 feet, occasionally to 6 feet. wave detail: southeast
5 feet at 9 seconds and north 3 feet at 4 seconds.
.saturday night...east winds around 5 knots, becoming west after
midnight. seas 3 to 4 feet, occasionally to 5 feet. wave detail:
east 4 feet at 9 seconds.
.sunday...northwest winds 5 to 10 knots, becoming northeast 20 to
25 knots. seas 3 to 5 feet, occasionally to 6 feet, building to
5 to 7 feet, occasionally to 9 feet after midnight.
.monday...east winds 20 to 25 knots. seas 6 to 8 feet,
occasionally to 10 feet. a slight chance of showers.
winds and seas higher in and near thunderstorms.
$$
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