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(1/7)
Latest Coastal Waters Forecast by KLWX
Issued 3/21/2026 4:58 AM America/New_York.
Valid through 3/21/2026 7:00 PM America/New_York.
fzus51 klwx 210858
cwflwx
expires:202603212300;;050047
coastal waters forecast
national weather service baltimore md/washington dc
457 am edt sat mar 21 2026
tidal potomac river and maryland portion of chesapeake bay.
forecasts of wave heights do not include effects of wind direction
relative to tidal currents. expect higher waves when winds are
blowing against the tidal flow. waves flat where waters are iced over.
anz531-212300-
chesapeake bay from pooles island to sandy point-
457 am edt sat mar 21 2026
...small craft advisory in effect until 5 am edt early this
morning...
.rest of the overnight...w winds 10 kt. waves 1 ft.
.today...n winds 5 to 10 kt. waves 1 ft.
.tonight...e winds around 5 kt...becoming s after midnight. waves
1 ft or less.
.sun...s winds 5 to 10 kt. waves 1 ft.
.sun night...s winds 10 kt...becoming nw after midnight. waves 1 ft.
rain likely.
.mon...n winds 15 to 20 kt. waves 2 ft. a chance of rain.
.mon night...n winds 10 to 15 kt with gusts to 20 kt. waves 2 ft.
.tue...n winds 5 to 10 kt...becoming s 10 to 15 kt. waves 1 ft.
.wed...s winds 10 to 15 kt...diminishing to 5 to 10 kt after
midnight. waves 1 ft.
$$
(2/7)
Latest Coastal Waters Forecast by KLWX
Issued 3/21/2026 4:58 AM America/New_York.
Valid through 3/21/2026 7:00 PM America/New_York.
fzus51 klwx 210858
cwflwx
expires:202603212300;;050050
coastal waters forecast
national weather service baltimore md/washington dc
457 am edt sat mar 21 2026
tidal potomac river and maryland portion of chesapeake bay.
forecasts of wave heights do not include effects of wind direction
relative to tidal currents. expect higher waves when winds are
blowing against the tidal flow. waves flat where waters are iced over.
anz532-212300-
chesapeake bay from sandy point to north beach-
457 am edt sat mar 21 2026
...small craft advisory in effect until 5 am edt early this
morning...
.rest of the overnight...sw winds 10 kt. waves 2 ft.
.today...n winds 5 to 10 kt...becoming ne late. waves 1 ft.
.tonight...e winds 5 to 10 kt...becoming s after midnight. waves
1 ft.
.sun...s winds 5 to 10 kt. waves 1 to 2 ft.
.sun night...s winds 10 to 15 kt...becoming w after midnight. waves
2 ft. rain likely.
.mon...n winds 15 to 20 kt with gusts to 25 kt. waves 3 ft. a chance
of rain.
.mon night...n winds 15 to 20 kt. waves 2 ft.
.tue...n winds 10 to 15 kt...becoming e 5 kt in the afternoon, then
becoming s 10 to 15 kt. waves 1 to 2 ft.
.wed...s winds 10 to 15 kt. waves 1 to 2 ft.
$$
(3/7)
Latest Coastal Waters Forecast by KLWX
Issued 3/21/2026 4:58 AM America/New_York.
Valid through 3/21/2026 7:00 PM America/New_York.
fzus51 klwx 210858
cwflwx
expires:202603212300;;050052
coastal waters forecast
national weather service baltimore md/washington dc
457 am edt sat mar 21 2026
tidal potomac river and maryland portion of chesapeake bay.
forecasts of wave heights do not include effects of wind direction
relative to tidal currents. expect higher waves when winds are
blowing against the tidal flow. waves flat where waters are iced over.
anz533-212300-
chesapeake bay from north beach to drum point-
457 am edt sat mar 21 2026
...small craft advisory in effect until 5 am edt early this
morning...
.rest of the overnight...sw winds 10 kt. waves 2 ft. a slight chance
of showers and tstms.
.today...nw winds 5 to 10 kt...becoming n late. waves 1 ft.
.tonight...e winds 5 to 10 kt...becoming s after midnight. waves
1 ft.
.sun...s winds 5 to 10 kt. waves 1 ft.
.sun night...s winds 10 to 15 kt...becoming w after midnight. gusts
up to 20 kt. waves 2 ft. a chance of rain.
.mon...n winds 15 to 20 kt with gusts to 25 kt. waves 3 ft. a chance
of rain.
.mon night...n winds 15 to 20 kt. waves 3 ft.
.tue...n winds 10 to 15 kt...becoming ne 5 kt in the afternoon, then
becoming s 10 to 15 kt. waves 1 to 2 ft.
.wed...s winds 10 to 15 kt. waves 1 to 2 ft.
winds and waves higher and visibilities lower in and near tstms.
$$
(4/7)
Latest Coastal Waters Forecast by KLWX
Issued 3/21/2026 4:58 AM America/New_York.
Valid through 3/21/2026 7:00 PM America/New_York.
fzus51 klwx 210858
cwflwx
expires:202603212300;;050055
coastal waters forecast
national weather service baltimore md/washington dc
457 am edt sat mar 21 2026
tidal potomac river and maryland portion of chesapeake bay.
forecasts of wave heights do not include effects of wind direction
relative to tidal currents. expect higher waves when winds are
blowing against the tidal flow. waves flat where waters are iced over.
anz534-212300-
chesapeake bay from drum point to smith point-
457 am edt sat mar 21 2026
...small craft advisory in effect until 5 am edt early this
morning...
.rest of the overnight...sw winds 15 kt with gusts to 20 kt. waves
2 ft. scattered showers with isolated tstms.
.today...nw winds 5 to 10 kt. waves 1 to 2 ft.
.tonight...e winds 5 to 10 kt...becoming s after midnight. waves
1 ft.
.sun...s winds 10 kt. waves 1 to 2 ft.
.sun night...s winds 10 to 15 kt...becoming sw after midnight. waves
2 ft. a chance of rain.
.mon...n winds 15 to 20 kt with gusts to 25 kt. waves 3 ft. a chance
of rain.
.mon night...n winds 15 to 20 kt. waves 3 ft.
.tue...n winds 10 to 15 kt...becoming s. waves 1 to 2 ft.
.wed...s winds 10 to 15 kt. waves 1 to 2 ft.
winds and waves higher and visibilities lower in and near tstms.
$$
(5/7)
Latest Coastal Waters Forecast by KLWX
Issued 3/21/2026 4:58 AM America/New_York.
Valid through 3/21/2026 7:00 PM America/New_York.
fzus51 klwx 210858
cwflwx
expires:202603212300;;050043
coastal waters forecast
national weather service baltimore md/washington dc
457 am edt sat mar 21 2026
tidal potomac river and maryland portion of chesapeake bay.
forecasts of wave heights do not include effects of wind direction
relative to tidal currents. expect higher waves when winds are
blowing against the tidal flow. waves flat where waters are iced over.
anz535-212300-
tidal potomac from key bridge to indian head-
457 am edt sat mar 21 2026
.rest of the overnight...sw winds 5 kt. waves less than 1 ft.
.today...n winds 5 kt. waves less than 1 ft.
.tonight...se winds 5 kt. waves less than 1 ft.
.sun...s winds 5 to 10 kt. gusts up to 20 kt in the afternoon. waves
1 ft.
.sun night...sw winds 5 to 10 kt with gusts to 20 kt. waves 1 ft.
rain likely.
.mon...nw winds 10 to 15 kt with gusts to 25 kt. waves 1 ft. a
chance of rain.
.mon night...n winds 10 to 15 kt. gusts up to 20 kt in the evening.
waves 1 ft.
.tue...se winds around 5 kt. waves 1 ft.
.wed...sw winds 5 to 10 kt. waves 1 ft.
$$
(6/7)
Latest Coastal Waters Forecast by KLWX
Issued 3/21/2026 4:58 AM America/New_York.
Valid through 3/21/2026 7:00 PM America/New_York.
fzus51 klwx 210858
cwflwx
expires:202603212300;;050044
coastal waters forecast
national weather service baltimore md/washington dc
457 am edt sat mar 21 2026
tidal potomac river and maryland portion of chesapeake bay.
forecasts of wave heights do not include effects of wind direction
relative to tidal currents. expect higher waves when winds are
blowing against the tidal flow. waves flat where waters are iced over.
anz536-212300-
tidal potomac from indian head to cobb island-
457 am edt sat mar 21 2026
...small craft advisory in effect until 5 am edt early this
morning...
.rest of the overnight...w winds 10 kt. waves 1 ft.
.today...n winds 5 to 10 kt...becoming ne late. waves 1 ft.
.tonight...se winds 5 kt. waves less than 1 ft.
.sun...s winds 5 to 10 kt. waves 1 ft.
.sun night...sw winds 10 to 15 kt...becoming w after midnight. waves
1 ft. a chance of rain.
.mon...n winds 15 to 20 kt. waves 2 ft. a chance of rain.
.mon night...n winds 10 to 15 kt with gusts to 20 kt. waves 1 ft.
.tue...n winds 5 to 10 kt...becoming se in the afternoon and
evening, then becoming s after midnight. waves 1 ft.
.wed...sw winds 5 to 10 kt. waves 1 ft.
$$
(7/7)
Latest Coastal Waters Forecast by KLWX
Issued 3/21/2026 4:58 AM America/New_York.
Valid through 3/21/2026 7:00 PM America/New_York.
fzus51 klwx 210858
cwflwx
expires:202603212300;;050045
coastal waters forecast
national weather service baltimore md/washington dc
457 am edt sat mar 21 2026
tidal potomac river and maryland portion of chesapeake bay.
forecasts of wave heights do not include effects of wind direction
relative to tidal currents. expect higher waves when winds are
blowing against the tidal flow. waves flat where waters are iced over.
anz537-212300-
tidal potomac from cobb island to smith point-
457 am edt sat mar 21 2026
...small craft advisory in effect until 5 am edt early this
morning...
.rest of the overnight...sw winds 10 kt. waves 1 ft. isolated
showers and tstms.
.today...nw winds 5 to 10 kt...becoming ne late. waves 1 ft.
.tonight...se winds 5 to 10 kt. waves 1 ft.
.sun...s winds 5 to 10 kt. waves 1 ft.
.sun night...sw winds 10 to 15 kt...becoming w after midnight. waves
1 ft. a chance of rain.
.mon...n winds 15 to 20 kt. waves 2 ft. a chance of rain.
.mon night...n winds 10 to 15 kt with gusts to 20 kt. waves 2 ft.
.tue...n winds 10 to 15 kt...becoming e 5 to 10 kt in the afternoon
and evening, then becoming s after midnight. waves 1 to 2 ft.
.wed...s winds 5 to 10 kt. waves 1 ft.
winds and waves higher and visibilities lower in and near tstms.
$$
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