(1/7)
Latest Coastal Waters Forecast by KLWX
Issued 5/21/2026 2:27 PM America/New_York.
Valid through 5/22/2026 4:00 AM America/New_York.
fzus51 klwx 211827
cwflwx
expires:202605220800;;412374
coastal waters forecast
national weather service baltimore md/washington dc
227 pm edt thu may 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.
anz531-220800-
chesapeake bay from pooles island to sandy point-
227 pm edt thu may 21 2026
...small craft advisory in effect through late friday night...
.this afternoon...ne winds 15 kt with gusts to 20 kt. waves 2 ft.
numerous showers.
.tonight...ne winds 10 to 15 kt with gusts to 20 kt. waves 2 ft.
widespread showers.
.fri...e winds 15 kt with gusts to 25 kt. waves 2 ft. rain likely.
.fri night...e winds 15 kt with gusts to 25 kt. waves 2 ft. rain.
.sat...e winds 15 to 20 kt. waves 2 ft. rain.
.sat night...e winds 15 to 20 kt. waves 2 ft. showers.
.sun...ne winds 5 to 10 kt. waves 1 ft or less. a chance of showers.
.mon...s winds around 5 kt. waves flat. a chance of showers.
$$
(2/7)
Latest Coastal Waters Forecast by KLWX
Issued 5/21/2026 2:27 PM America/New_York.
Valid through 5/22/2026 4:00 AM America/New_York.
fzus51 klwx 211827
cwflwx
expires:202605220800;;412377
coastal waters forecast
national weather service baltimore md/washington dc
227 pm edt thu may 21 2026
tidal potomac river and maryland portion of chesapeake bay.
forecasts of wave heights do not include effects of wind direction
relative to tidal currents. expect higher waves when winds are
blowing against the tidal flow. waves flat where waters are iced over.
anz532-220800-
chesapeake bay from sandy point to north beach-
227 pm edt thu may 21 2026
...small craft advisory in effect through late friday night...
.this afternoon...ne winds 15 kt with gusts to 25 kt. waves 2 to
3 ft. scattered showers.
.tonight...ne winds 15 kt with gusts to 25 kt. waves 2 to 3 ft.
widespread showers.
.fri...ne winds 15 to 20 kt with gusts to 25 kt. waves 3 ft. rain.
.fri night...e winds 15 to 20 kt with gusts to 25 kt. waves 2 to
3 ft. rain.
.sat...e winds 15 kt with gusts to 25 kt. waves 3 ft. rain.
.sat night...e winds 10 to 15 kt with gusts to 20 kt. waves 2 ft.
showers.
.sun...ne winds 5 to 10 kt. waves 1 ft or less. showers in the
morning. a chance of showers.
.mon...se winds around 5 kt. waves flat. a chance of showers in the
morning. showers likely.
$$
(3/7)
Latest Coastal Waters Forecast by KLWX
Issued 5/21/2026 2:27 PM America/New_York.
Valid through 5/22/2026 4:00 AM America/New_York.
fzus51 klwx 211827
cwflwx
expires:202605220800;;412379
coastal waters forecast
national weather service baltimore md/washington dc
227 pm edt thu may 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.
anz533-220800-
chesapeake bay from north beach to drum point-
227 pm edt thu may 21 2026
...small craft advisory in effect through late friday night...
.this afternoon...ne winds 15 kt with gusts to 25 kt. waves 3 ft.
scattered showers.
.tonight...ne winds 15 kt with gusts to 25 kt. waves 3 ft.
widespread showers.
.fri...ne winds 15 to 20 kt with gusts to 25 kt. waves 3 ft. rain.
.fri night...e winds 15 to 20 kt with gusts to 25 kt. waves 3 ft.
rain.
.sat...e winds 15 kt with gusts to 20 kt. waves 3 ft. rain.
.sat night...e winds 10 to 15 kt with gusts to 20 kt. waves 2 ft.
showers.
.sun...ne winds 5 to 10 kt. waves 1 ft or less. showers through the
day, then a chance of showers through the night.
.mon...se winds around 5 kt. waves flat. a chance of showers in the
morning. showers likely.
$$
(4/7)
Latest Coastal Waters Forecast by KLWX
Issued 5/21/2026 2:27 PM America/New_York.
Valid through 5/22/2026 4:00 AM America/New_York.
fzus51 klwx 211827
cwflwx
expires:202605220800;;412382
coastal waters forecast
national weather service baltimore md/washington dc
227 pm edt thu may 21 2026
tidal potomac river and maryland portion of chesapeake bay.
forecasts of wave heights do not include effects of wind direction
relative to tidal currents. expect higher waves when winds are
blowing against the tidal flow. waves flat where waters are iced over.
anz534-220800-
chesapeake bay from drum point to smith point-
227 pm edt thu may 21 2026
...small craft advisory in effect through late friday night...
.this afternoon...ne winds 10 to 15 kt with gusts to 25 kt. waves
2 to 3 ft. isolated showers.
.tonight...ne winds 15 to 20 kt with gusts to 25 kt. waves 3 ft.
widespread showers.
.fri...ne winds 15 to 20 kt with gusts to 25 kt. waves 3 ft. rain.
.fri night...ne winds 15 to 20 kt with gusts to 25 kt. waves 3 ft.
rain.
.sat...e winds 15 to 20 kt with gusts to 25 kt. waves 3 ft. rain.
.sat night...e winds 10 to 15 kt...becoming s after midnight. gusts
up to 20 kt. waves 2 to 3 ft. showers.
.sun...nw winds 5 to 10 kt...becoming e. waves 1 ft.
.mon...se winds 5 kt. waves less than 1 ft. showers likely.
$$
(5/7)
Latest Coastal Waters Forecast by KLWX
Issued 5/21/2026 2:27 PM America/New_York.
Valid through 5/22/2026 4:00 AM America/New_York.
fzus51 klwx 211827
cwflwx
expires:202605220800;;412370
coastal waters forecast
national weather service baltimore md/washington dc
227 pm edt thu may 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.
anz535-220800-
tidal potomac from key bridge to indian head-
227 pm edt thu may 21 2026
...small craft advisory in effect until 6 pm edt this evening...
.this afternoon...ne winds 10 kt with gusts to 20 kt. waves 1 ft.
numerous showers.
.tonight...ne winds 10 kt. waves 1 ft. widespread showers.
.fri...ne winds 10 kt. waves 1 ft. rain.
.fri night...ne winds 10 kt. waves 1 ft. rain.
.sat...e winds 10 kt. waves 1 ft. rain.
.sat night...ne winds 5 to 10 kt. waves 1 ft. showers.
.sun...e winds around 5 kt. waves 1 ft. showers, mainly in the
morning.
.mon...se winds around 5 kt. waves 1 ft or less. a chance of showers
in the morning, then showers likely.
$$
(6/7)
Latest Coastal Waters Forecast by KLWX
Issued 5/21/2026 2:27 PM America/New_York.
Valid through 5/22/2026 4:00 AM America/New_York.
fzus51 klwx 211827
cwflwx
expires:202605220800;;412371
coastal waters forecast
national weather service baltimore md/washington dc
227 pm edt thu may 21 2026
tidal potomac river and maryland portion of chesapeake bay.
forecasts of wave heights do not include effects of wind direction
relative to tidal currents. expect higher waves when winds are
blowing against the tidal flow. waves flat where waters are iced over.
anz536-220800-
tidal potomac from indian head to cobb island-
227 pm edt thu may 21 2026
...small craft advisory in effect until 6 pm edt this evening...
.this afternoon...ne winds 10 kt with gusts to 20 kt. waves 1 ft.
scattered showers.
.tonight...ne winds 10 to 15 kt with gusts to 20 kt. waves 1 ft.
widespread showers.
.fri...ne winds 10 to 15 kt with gusts to 20 kt. waves 1 ft. rain.
.fri night...ne winds 10 to 15 kt with gusts to 20 kt. waves 1 ft.
rain.
.sat...e winds 10 kt. waves 1 ft. rain.
.sat night...e winds 5 to 10 kt. waves 1 ft. showers.
.sun...e winds around 5 kt. waves 1 ft. showers, mainly in the
morning.
.mon...se winds around 5 kt. waves 1 ft or less. a chance of showers
in the morning, then a chance of tstms through the night. showers
likely.
winds and waves higher and visibilities lower in and near tstms.
$$
(7/7)
Latest Coastal Waters Forecast by KLWX
Issued 5/21/2026 2:27 PM America/New_York.
Valid through 5/22/2026 4:00 AM America/New_York.
fzus51 klwx 211827
cwflwx
expires:202605220800;;412372
coastal waters forecast
national weather service baltimore md/washington dc
227 pm edt thu may 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.
anz537-220800-
tidal potomac from cobb island to smith point-
227 pm edt thu may 21 2026
...small craft advisory in effect through late friday night...
.this afternoon...ne winds 10 to 15 kt with gusts to 25 kt. waves
2 to 3 ft. isolated showers.
.tonight...ne winds 10 to 15 kt with gusts to 25 kt. waves 3 ft.
widespread showers.
.fri...ne winds 15 to 20 kt with gusts to 25 kt. waves 3 ft. rain.
.fri night...ne winds 15 to 20 kt with gusts to 25 kt. waves 3 ft.
rain.
.sat...e winds 10 to 15 kt with gusts to 20 kt. waves 3 ft. rain.
.sat night...e winds 10 to 15 kt...becoming s 5 to 10 kt after
midnight. gusts up to 20 kt. waves 2 ft. showers.
.sun...ne winds around 5 kt. waves 1 ft or less. showers, mainly in
the morning.
.mon...se winds around 5 kt. waves 1 ft or less. a chance of showers
in the morning, then a chance of tstms through the night. showers
likely.
winds and waves higher and visibilities lower in and near tstms.
$$
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