(1/6)
Latest Coastal Waters Forecast by KCHS
Issued 3/12/2026 1:45 PM America/New_York.
Valid through 3/13/2026 3:00 AM America/New_York.
fzus52 kchs 121745
cwfchs
expires:202603130700;;554022
coastal waters forecast
national weather service charleston sc
144 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
amz350-130700-
waters from south santee river to edisto beach sc out 20 nm-
144 pm edt thu mar 12 2026
...gale warning in effect through late tonight...
.this afternoon...sw winds 20 to 25 kt, becoming nw 25 to 30 kt
late. seas 5 to 7 ft. wave detail: s 6 ft at 7 seconds and se
2 ft at 9 seconds. showers with a slight chance of tstms early,
then a chance of showers late.
.tonight...n winds 25 to 30 kt, becoming ne 20 to 25 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 3 to 4 ft. showers likely with a
chance of tstms.
.sun night...s winds 20 to 25 kt. seas 4 to 6 ft. showers with a
chance of tstms.
.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.
winds and seas higher in and near tstms.
$$
(2/6)
Latest Coastal Waters Forecast by KCHS
Issued 3/12/2026 1:45 PM America/New_York.
Valid through 3/13/2026 3:00 AM America/New_York.
fzus52 kchs 121745
cwfchs
expires:202603130700;;554023
coastal waters forecast
national weather service charleston sc
144 pm edt thu mar 12 2026
south santee river sc to savannah ga out 20 nm and savannah ga to
altamaha sound ga out 60 nm, including charleston harbor and
grays reef national marine sanctuary
amz352-130700-
waters from edisto beach sc to savannah ga out 20 nm-
144 pm edt thu mar 12 2026
...small craft advisory in effect through friday morning...
.this afternoon...w winds 20 kt, becoming nw late. seas 4 to
6 ft. wave detail: s 4 ft at 7 seconds and se 2 ft at 9 seconds.
showers with a slight chance of tstms early, then a chance of
showers late.
.tonight...n winds 25 to 30 kt, becoming ne 20 to 25 kt after
midnight. seas 4 to 5 ft, building to 4 to 6 ft after midnight.
wave detail: n 5 ft at 4 seconds and s 3 ft at 7 seconds,
becoming ne 5 ft at 5 seconds and se 2 ft at 9 seconds.
.fri...e winds 15 to 20 kt with gusts to 25 kt, becoming ne 5 to
10 kt in the afternoon. seas 4 to 5 ft, subsiding to 3 to 4 ft in
the afternoon. wave detail: ne 5 ft at 6 seconds and se 2 ft at
9 seconds, becoming e 4 ft at 8 seconds.
.fri night...se winds 5 kt, becoming sw after midnight. seas 3 to
4 ft. wave detail: e 4 ft at 8 seconds.
.sat...n winds 5 kt, becoming e in the afternoon. seas 2 to 3 ft.
wave detail: e 3 ft at 8 seconds.
.sat night...e winds 5 to 10 kt. seas 2 to 3 ft. wave detail: e
3 ft at 8 seconds. a slight chance of showers after midnight.
.sun...e winds 10 kt. seas 2 to 3 ft. showers likely with a
slight chance of tstms.
.sun night...s winds 15 to 20 kt. seas 4 to 6 ft. showers likely
with a chance of tstms.
.mon...sw winds 20 to 25 kt. seas 6 to 8 ft. showers likely with
a chance of tstms.
.mon night...w winds 25 to 30 kt. seas 6 to 8 ft. a chance of
showers.
winds and seas higher in and near tstms.
$$
(3/6)
Latest Coastal Waters Forecast by KCHS
Issued 3/12/2026 1:45 PM America/New_York.
Valid through 3/13/2026 3:00 AM America/New_York.
fzus52 kchs 121745
cwfchs
expires:202603130700;;554024
coastal waters forecast
national weather service charleston sc
144 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
amz354-130700-
waters from savannah ga to altamaha sound ga out 20 nm, including
grays reef national marine sanctuary-
144 pm edt thu mar 12 2026
...small craft advisory in effect through friday morning...
.this afternoon...w winds 15 to 20 kt, becoming nw 20 to 25 kt
late. seas 4 to 5 ft. wave detail: s 4 ft at 6 seconds and w 2 ft
at 3 seconds. showers likely with a slight chance of tstms early,
then a chance of showers late.
.tonight...n winds 25 to 30 kt, becoming ne 20 to 25 kt after
midnight. seas 4 to 5 ft, building to 4 to 6 ft after midnight.
wave detail: n 5 ft at 5 seconds and s 2 ft at 6 seconds,
becoming ne 6 ft at 6 seconds and se 2 ft at 9 seconds.
.fri...e winds 15 to 20 kt with gusts to 25 kt, becoming ne 5 to
10 kt in the afternoon. seas 4 to 6 ft, subsiding to 4 to 5 ft in
the afternoon. wave detail: ne 6 ft at 6 seconds and e 1 foot at
9 seconds, becoming e 4 ft at 8 seconds.
.fri night...e winds 5 kt, becoming s after midnight. seas 3 to
4 ft. wave detail: e 4 ft at 8 seconds.
.sat...n winds 5 kt, becoming ne in the afternoon. seas 3 ft.
wave detail: e 3 ft at 8 seconds.
.sat night...e winds 10 kt. seas 2 to 3 ft. wave detail: e 3 ft
at 8 seconds. a chance of showers after midnight.
.sun...se winds 10 to 15 kt. seas 2 to 3 ft. showers likely with
a chance of tstms.
.sun night...s winds 15 to 20 kt. seas 4 to 5 ft. showers likely
with a chance of tstms.
.mon...sw winds 20 to 25 kt. seas 4 to 6 ft. showers likely with
a chance of tstms.
.mon night...nw winds 25 to 30 kt. seas 4 to 6 ft. a chance of
showers.
winds and seas higher in and near tstms.
$$
(4/6)
Latest Coastal Waters Forecast by KCHS
Issued 3/12/2026 1:45 PM America/New_York.
Valid through 3/13/2026 3:00 AM America/New_York.
fzus52 kchs 121745
cwfchs
expires:202603130700;;554025
coastal waters forecast
national weather service charleston sc
144 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
amz374-130700-
waters from savannah ga to altamaha sound ga from 20 to 60 nm-
144 pm edt thu mar 12 2026
...small craft advisory in effect until 6 pm edt this evening...
...gale warning in effect from 6 pm edt this evening through late
tonight...
.this afternoon...sw winds 20 to 25 kt, becoming nw late. seas
4 to 6 ft. wave detail: sw 5 ft at 5 seconds and se 3 ft at
9 seconds. a slight chance of tstms. showers early, then a chance
of showers late.
.tonight...ne winds 25 to 30 kt with gusts to 40 kt. seas 5 to
7 ft, building to 6 to 8 ft after midnight. wave detail: n 7 ft
at 5 seconds and s 3 ft at 6 seconds, becoming ne 7 ft at
6 seconds and e 7 ft at 9 seconds.
.fri...e winds 15 to 20 kt with gusts to 25 kt, diminishing to
10 to 15 kt in the afternoon. seas 6 to 8 ft, subsiding to 4 to
6 ft in the afternoon. wave detail: ne 7 ft at 7 seconds,
becoming ne 6 ft at 8 seconds.
.fri night...ne winds 5 kt, becoming s after midnight. seas 4 to
5 ft. wave detail: ne 5 ft at 8 seconds.
.sat...n winds 5 to 10 kt, becoming ne in the afternoon. seas
3 to 4 ft. wave detail: e 4 ft at 8 seconds.
.sat night...e winds 5 to 10 kt. seas 3 to 4 ft. wave detail: e
3 ft at 8 seconds. a chance of showers with a slight chance of
tstms after midnight.
.sun...se winds 10 to 15 kt. seas 3 to 4 ft. showers likely with
a chance of tstms.
.sun night...s winds 15 to 20 kt. seas 4 to 6 ft. showers likely
with a chance of tstms.
.mon...sw winds 20 to 25 kt. seas 6 to 8 ft. showers likely with
a chance of tstms.
.mon night...nw winds 25 to 30 kt. seas 6 to 8 ft. a chance of
showers with a slight chance of tstms.
winds and seas higher in and near tstms.
$$
(5/6)
Latest Coastal Waters Forecast by KJAX
Issued 3/12/2026 3:29 AM America/New_York.
Valid through 3/12/2026 6:30 PM America/New_York.
fzus52 kjax 120729
cwfjax
expires:202603122230;;062698
coastal waters forecast for northeast florida/southeast georgia
national weather service jacksonville fl
329 am edt thu mar 12 2026
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.
amz450-452-122230-
coastal waters from altamaha sound to fernandina beach fl out
20 nm-
coastal waters from fernandina beach to st. augustine fl out
20 nm-
329 am edt thu mar 12 2026
...small craft advisory in effect from this afternoon through
this evening...
...gale warning in effect from this evening through late
tonight...
.today...southwest winds around 15 knots, becoming northwest
20 to 25 knots this afternoon. seas 3 to 4 feet, occasionally to
5 feet. wave detail: northwest 3 feet at 3 seconds and south
3 feet at 6 seconds. intracoastal waters rough. a chance of
showers this morning, then showers with a slight chance of
thunderstorms this afternoon.
.tonight...northeast winds 25 to 30 knots with gusts up to
40 knots. seas 4 to 6 feet, occasionally to 8 feet, building to
5 to 8 feet, occasionally to 10 feet after midnight. wave detail:
north 6 feet at 6 seconds and east 6 feet at 8 seconds, becoming
northeast 8 feet at 6 seconds. intracoastal waters very rough.
.friday...east winds 15 to 20 knots, becoming northeast 5 to
10 knots in the afternoon. seas 5 to 7 feet, occasionally to
9 feet. wave detail: northeast 7 feet at 8 seconds. intracoastal
waters choppy.
.friday night...northeast winds 5 to 10 knots. seas 3 to 5 feet,
occasionally to 6 feet. wave detail: east 5 feet at 8 seconds.
intracoastal waters light chop.
.saturday...northeast winds 5 to 10 knots. seas 3 to 4 feet,
occasionally to 5 feet. wave detail: east 4 feet at 8 seconds.
intracoastal waters light chop. a slight chance of showers and
thunderstorms in the afternoon.
.saturday night...southeast winds 5 to 10 knots. seas 2 to
4 feet, occasionally to 5 feet. wave detail: east 3 feet at
8 seconds. intracoastal waters light chop. a slight chance of
showers and thunderstorms in the evening, then a chance of
showers and thunderstorms after midnight.
.sunday...southeast winds 10 to 15 knots, becoming south 15 to
20 knots. seas 3 to 5 feet, occasionally to 6 feet. intracoastal
waters choppy. a slight chance of thunderstorms in the morning.
showers likely through the day. a chance of thunderstorms through
the night. a chance of showers in the evening, then showers
likely with a slight chance of thunderstorms after midnight.
.monday...southwest winds 15 to 20 knots, becoming northwest
25 to 30 knots. seas 4 to 6 feet, occasionally to 8 feet.
intracoastal waters very rough. showers likely in the morning. a
chance of thunderstorms through the day. a chance of showers in
the afternoon, then a slight chance of thunderstorms in the
evening. a slight chance of showers through the night.
winds and waves higher in and near thunderstorms.
$$
(6/6)
Latest Coastal Waters Forecast by KJAX
Issued 3/12/2026 3:29 AM America/New_York.
Valid through 3/12/2026 6:30 PM America/New_York.
fzus52 kjax 120729
cwfjax
expires:202603122230;;062699
coastal waters forecast for northeast florida/southeast georgia
national weather service jacksonville fl
329 am edt thu mar 12 2026
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.
amz470-472-122230-
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-
329 am edt thu mar 12 2026
...small craft exercise caution in effect through this
afternoon...
...small craft advisory in effect from this afternoon through
this evening...
...gale warning in effect from this evening through late
tonight...
.today...southwest winds 15 to 20 knots, becoming northwest 25 to
30 knots this afternoon. seas 4 to 6 feet, occasionally to
8 feet. wave detail: southwest 4 feet at 5 seconds and southeast
4 feet at 9 seconds. a chance of showers this morning, then
showers with a slight chance of thunderstorms this afternoon.
.tonight...northeast winds 25 to 30 knots. seas 5 to 8 feet,
occasionally to 10 feet, building to 7 to 8 feet, occasionally to
10 feet after midnight. wave detail: northeast 8 feet at
7 seconds.
.friday...east winds 15 to 20 knots, diminishing to 5 to 10 knots
in the afternoon. seas 5 to 8 feet, occasionally to 10 feet. wave
detail: northeast 8 feet at 8 seconds.
.friday night...east winds 5 to 10 knots. seas 4 to 6 feet,
occasionally to 8 feet. wave detail: northeast 6 feet at
8 seconds.
.saturday...northeast winds 5 to 10 knots. seas 3 to 5 feet,
occasionally to 6 feet. wave detail: northeast 5 feet at
8 seconds. a slight chance of showers and thunderstorms in the
afternoon.
.saturday night...southeast winds 10 to 15 knots. seas 3 to
4 feet, occasionally to 5 feet. wave detail: east 4 feet at
8 seconds. a slight chance of showers and thunderstorms in the
evening, then a chance of showers and thunderstorms after
midnight.
.sunday...south winds 15 to 20 knots. seas 4 to 6 feet,
occasionally to 8 feet. showers likely with a chance of
thunderstorms.
.monday...southwest winds 20 to 25 knots, becoming northwest.
seas 5 to 8 feet, occasionally to 10 feet. showers likely with a
chance of thunderstorms through the day, then a chance of showers
with a slight chance of thunderstorms in the evening. a slight
chance of showers after midnight.
winds and seas higher in and near thunderstorms.
$$
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