(1/7)
Latest Coastal Waters Forecast by KLWX
Issued 5/21/2026 6:04 PM America/New_York.
Valid through 5/22/2026 4:00 AM America/New_York.
fzus51 klwx 212204
cwflwx
expires:202605220800;;422159
coastal waters forecast
national weather service baltimore md/washington dc
604 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-
604 pm edt thu may 21 2026
...small craft advisory in effect through late friday night...
.tonight...ne winds 15 kt with gusts to 20 kt. waves 2 ft. numerous
showers.
.fri...e winds 15 kt with gusts to 25 kt. waves 2 ft. showers
likely.
.fri night...e winds 15 kt with gusts to 25 kt. waves 2 ft. showers.
.sat...e winds 15 to 20 kt. waves 2 ft. showers.
.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. a chance of showers.
.sun night...ne winds 5 kt. waves flat. a chance of showers.
.mon...s winds around 5 kt. waves flat. a chance of showers.
.tue...s winds around 5 kt. waves flat. a chance of showers.
$$
(2/7)
Latest Coastal Waters Forecast by KLWX
Issued 5/21/2026 6:04 PM America/New_York.
Valid through 5/22/2026 4:00 AM America/New_York.
fzus51 klwx 212204
cwflwx
expires:202605220800;;422162
coastal waters forecast
national weather service baltimore md/washington dc
604 pm edt thu may 21 2026
tidal potomac river and maryland portion of chesapeake bay.
forecasts of wave heights do not include effects of wind direction
relative to tidal currents. expect higher waves when winds are
blowing against the tidal flow. waves flat where waters are iced over.
anz532-220800-
chesapeake bay from sandy point to north beach-
604 pm edt thu may 21 2026
...small craft advisory in effect through late friday night...
.tonight...ne winds 15 to 20 kt with gusts to 25 kt. waves 2 to
3 ft. showers.
.fri...ne winds 15 to 20 kt with gusts to 25 kt. waves 3 ft.
showers.
.fri night...e winds 15 to 20 kt with gusts to 25 kt. waves 2 to
3 ft. showers.
.sat...e winds 15 to 20 kt. waves 3 ft. showers.
.sat night...e winds 10 to 15 kt with gusts to 20 kt. waves 2 ft.
showers.
.sun...ne winds 5 kt. waves less than 1 ft. a chance of showers.
.sun night...ne winds 5 kt. waves less than 1 ft. a chance of
showers.
.mon...se winds around 5 kt. waves flat. a chance of showers in the
morning. showers likely.
.tue...se winds around 5 kt. waves flat. a chance of showers.
$$
(3/7)
Latest Coastal Waters Forecast by KLWX
Issued 5/21/2026 6:04 PM America/New_York.
Valid through 5/22/2026 4:00 AM America/New_York.
fzus51 klwx 212204
cwflwx
expires:202605220800;;422164
coastal waters forecast
national weather service baltimore md/washington dc
604 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-
604 pm edt thu may 21 2026
...small craft advisory in effect through late friday night...
.tonight...ne winds 15 to 20 kt with gusts to 25 kt. waves 2 to
3 ft. showers.
.fri...ne winds 15 to 20 kt with gusts to 25 kt. waves 3 ft.
showers.
.fri night...e winds 15 to 20 kt with gusts to 25 kt. waves 3 ft.
showers.
.sat...e winds 15 kt with gusts to 20 kt. waves 3 ft. showers.
.sat night...e winds 10 to 15 kt with gusts to 20 kt. waves 2 ft.
showers.
.sun...ne winds 5 kt. waves less than 1 ft. showers likely.
.sun night...e winds 5 kt. waves less than 1 ft. a chance of showers
and tstms.
.mon...se winds around 5 kt. waves flat. a chance of showers and
tstms in the morning, then showers likely.
.tue...se winds around 5 kt. waves flat. showers likely through the
day. a chance of showers through the night.
winds and waves higher and visibilities lower in and near tstms.
$$
(4/7)
Latest Coastal Waters Forecast by KLWX
Issued 5/21/2026 6:04 PM America/New_York.
Valid through 5/22/2026 4:00 AM America/New_York.
fzus51 klwx 212204
cwflwx
expires:202605220800;;422167
coastal waters forecast
national weather service baltimore md/washington dc
604 pm edt thu may 21 2026
tidal potomac river and maryland portion of chesapeake bay.
forecasts of wave heights do not include effects of wind direction
relative to tidal currents. expect higher waves when winds are
blowing against the tidal flow. waves flat where waters are iced over.
anz534-220800-
chesapeake bay from drum point to smith point-
604 pm edt thu may 21 2026
...small craft advisory in effect through late friday night...
.tonight...ne winds 20 kt with gusts to 25 kt. waves 3 ft. showers.
.fri...ne winds 15 to 20 kt with gusts to 25 kt. waves 3 ft.
showers.
.fri night...ne winds 15 to 20 kt with gusts to 25 kt. waves 3 ft.
showers.
.sat...e winds 15 to 20 kt with gusts to 25 kt. waves 3 ft. showers.
.sat night...e winds 10 to 15 kt...becoming se after midnight. gusts
up to 20 kt. waves 2 to 3 ft. showers.
.sun...nw winds 5 to 10 kt. waves 1 ft. showers with a chance of
tstms.
.sun night...e winds 5 kt. waves less than 1 ft. showers likely with
a chance of tstms.
.mon...se winds 5 kt. waves less than 1 ft. a chance of tstms.
showers likely.
.tue...se winds around 5 kt. waves 1 ft or less. showers likely. a
chance of showers after midnight.
winds and waves higher and visibilities lower in and near tstms.
$$
(5/7)
Latest Coastal Waters Forecast by KLWX
Issued 5/21/2026 6:04 PM America/New_York.
Valid through 5/22/2026 4:00 AM America/New_York.
fzus51 klwx 212204
cwflwx
expires:202605220800;;422155
coastal waters forecast
national weather service baltimore md/washington dc
604 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-
604 pm edt thu may 21 2026
.tonight...ne winds 10 kt with gusts to 20 kt. waves 1 ft. showers.
.fri...ne winds 10 kt. waves 1 ft. showers.
.fri night...ne winds 10 kt. waves 1 ft. showers.
.sat...e winds 10 kt. waves 1 ft. showers.
.sat night...ne winds 5 to 10 kt. waves 1 ft. showers.
.sun...ne winds around 5 kt. waves 1 ft. a chance of showers.
.sun night...e winds around 5 kt. waves 1 ft. a chance of showers.
.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.
.tue...e winds around 5 kt. waves 1 ft or less. showers likely
through the day. a chance of showers through the night.
winds and waves higher and visibilities lower in and near tstms.
$$
(6/7)
Latest Coastal Waters Forecast by KLWX
Issued 5/21/2026 6:04 PM America/New_York.
Valid through 5/22/2026 4:00 AM America/New_York.
fzus51 klwx 212204
cwflwx
expires:202605220800;;422156
coastal waters forecast
national weather service baltimore md/washington dc
604 pm edt thu may 21 2026
tidal potomac river and maryland portion of chesapeake bay.
forecasts of wave heights do not include effects of wind direction
relative to tidal currents. expect higher waves when winds are
blowing against the tidal flow. waves flat where waters are iced over.
anz536-220800-
tidal potomac from indian head to cobb island-
604 pm edt thu may 21 2026
.tonight...ne winds 10 to 15 kt with gusts to 20 kt. waves 1 ft.
showers.
.fri...ne winds 10 to 15 kt with gusts to 20 kt. waves 1 ft.
showers.
.fri night...ne winds 10 to 15 kt with gusts to 20 kt. waves 1 ft.
showers.
.sat...e winds 10 kt. waves 1 ft. showers.
.sat night...e winds 5 to 10 kt. waves 1 ft. showers.
.sun...n winds around 5 kt. waves 1 ft. a chance of showers.
.sun night...e winds around 5 kt. waves 1 ft. a chance of showers
and tstms.
.mon...se winds around 5 kt. waves 1 ft or less. a chance of showers
in the morning, then a chance of tstms through the night. showers
likely.
.tue...se winds around 5 kt. waves 1 ft or less. showers likely. a
chance of showers after midnight.
winds and waves higher and visibilities lower in and near tstms.
$$
(7/7)
Latest Coastal Waters Forecast by KLWX
Issued 5/21/2026 6:04 PM America/New_York.
Valid through 5/22/2026 4:00 AM America/New_York.
fzus51 klwx 212204
cwflwx
expires:202605220800;;422157
coastal waters forecast
national weather service baltimore md/washington dc
604 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-
604 pm edt thu may 21 2026
...small craft advisory in effect through late friday night...
.tonight...ne winds 15 kt with gusts to 25 kt. waves 3 ft. showers.
.fri...ne winds 15 to 20 kt with gusts to 25 kt. waves 3 ft.
showers.
.fri night...ne winds 15 to 20 kt with gusts to 25 kt. waves 3 ft.
showers.
.sat...e winds 10 to 15 kt with gusts to 20 kt. waves 3 ft. showers.
.sat night...e winds 10 to 15 kt...becoming s 5 to 10 kt after
midnight. waves 2 ft. showers.
.sun...nw winds around 5 kt. waves 1 ft. a chance of showers and
tstms.
.sun night...e winds 5 kt. waves less than 1 ft. a chance of showers
and tstms.
.mon...se winds around 5 kt. waves 1 ft or less. a chance of showers
in the morning. a chance of tstms. showers likely.
.tue...se winds around 5 kt. waves flat. showers likely. a chance of
showers after midnight.
winds and waves higher and visibilities lower in and near tstms.
$$
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