(1/7)
Latest Coastal Waters Forecast by KLWX
Issued 9/21/2026 4:58 PM America/New_York.
Valid through 9/22/2026 4:00 AM America/New_York.
fzus51 klwx 212058
cwflwx
expires:202609220800;;837027
coastal waters forecast
national weather service baltimore md/washington dc
458 pm edt mon sep 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-
458 pm edt mon sep 21 2026
...small craft advisory in effect through late tuesday night...
.rest of this afternoon...ne winds 10 kt. waves 2 ft. a chance of
showers.
.tonight...e winds 15 to 20 kt with gusts to 25 kt. waves 2 to 3 ft.
a chance of showers.
.tue...ne winds 15 to 20 kt with gusts to 30 kt. waves 3 ft.
showers.
.tue night...ne winds 20 to 25 kt with gusts to 30 kt. waves 3 ft.
rain likely.
.wed...ne winds 20 to 25 kt with gusts to 30 kt. waves 3 ft. rain
likely.
.wed night...ne winds 20 kt with gusts to 35 kt. waves 4 ft.
.thu...ne winds 15 to 20 kt. waves 3 ft.
.fri...n winds 20 to 25 kt. waves 3 ft.
$$
(2/7)
Latest Coastal Waters Forecast by KLWX
Issued 9/21/2026 4:58 PM America/New_York.
Valid through 9/22/2026 4:00 AM America/New_York.
fzus51 klwx 212058
cwflwx
expires:202609220800;;837030
coastal waters forecast
national weather service baltimore md/washington dc
458 pm edt mon sep 21 2026
tidal potomac river and maryland portion of chesapeake bay.
forecasts of wave heights do not include effects of wind direction
relative to tidal currents. expect higher waves when winds are
blowing against the tidal flow. waves flat where waters are iced over.
anz532-220800-
chesapeake bay from sandy point to north beach-
458 pm edt mon sep 21 2026
...small craft advisory in effect through late tuesday night...
.rest of this afternoon...ne winds 15 kt. waves 2 ft. a slight
chance of showers.
.tonight...e winds 15 to 20 kt with gusts to 25 kt. waves 2 to 3 ft.
showers.
.tue...ne winds 15 to 20 kt with gusts to 30 kt. waves 3 ft.
showers.
.tue night...ne winds 20 to 25 kt with gusts to 30 kt. waves 4 ft.
rain likely.
.wed...ne winds 20 to 25 kt with gusts to 35 kt. waves 4 ft. rain
likely.
.wed night...ne winds 20 to 25 kt with gusts to 35 kt. waves 4 ft.
.thu...ne winds 20 to 25 kt. waves 3 ft.
.fri...n winds 20 to 25 kt. waves 3 ft.
$$
(3/7)
Latest Coastal Waters Forecast by KLWX
Issued 9/21/2026 4:58 PM America/New_York.
Valid through 9/22/2026 4:00 AM America/New_York.
fzus51 klwx 212058
cwflwx
expires:202609220800;;837032
coastal waters forecast
national weather service baltimore md/washington dc
458 pm edt mon sep 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-
458 pm edt mon sep 21 2026
...small craft advisory in effect through late tuesday night...
...gale watch in effect from wednesday morning through late
wednesday night...
.rest of this afternoon...ne winds 15 kt. waves 2 ft.
.tonight...e winds 15 to 20 kt with gusts to 25 kt. waves 3 ft.
showers likely.
.tue...ne winds 15 to 20 kt with gusts to 30 kt. waves 4 ft.
showers. patchy fog. vsby 1 nm or less.
.tue night...ne winds 20 to 25 kt with gusts to 30 kt. waves 4 ft.
rain likely.
.wed...ne winds 20 to 25 kt with gusts to 35 kt. waves 5 ft. rain
likely.
.wed night...ne winds 20 to 25 kt with gusts to 35 kt. waves 5 ft. a
chance of rain.
.thu...ne winds 20 to 25 kt. waves 4 ft.
.fri...n winds 20 to 25 kt. waves 4 ft.
$$
(4/7)
Latest Coastal Waters Forecast by KLWX
Issued 9/21/2026 4:58 PM America/New_York.
Valid through 9/22/2026 4:00 AM America/New_York.
fzus51 klwx 212058
cwflwx
expires:202609220800;;837035
coastal waters forecast
national weather service baltimore md/washington dc
458 pm edt mon sep 21 2026
tidal potomac river and maryland portion of chesapeake bay.
forecasts of wave heights do not include effects of wind direction
relative to tidal currents. expect higher waves when winds are
blowing against the tidal flow. waves flat where waters are iced over.
anz534-220800-
chesapeake bay from drum point to smith point-
458 pm edt mon sep 21 2026
...small craft advisory in effect through late tuesday night...
...gale watch in effect from wednesday morning through thursday
afternoon...
.rest of this afternoon...ne winds 15 kt. waves 2 ft.
.tonight...e winds 15 to 20 kt. waves 3 ft. a chance of showers.
.tue...e winds 20 to 25 kt with gusts to 30 kt. waves 4 ft. showers
likely with a chance of tstms.
.tue night...ne winds 20 to 25 kt with gusts to 35 kt. waves 5 ft.
rain likely.
.wed...ne winds 20 to 25 kt with gusts to 40 kt. waves 5 ft. rain.
.wed night...ne winds 25 kt with gusts to 40 kt. waves 6 ft. a
chance of rain.
.thu...ne winds 20 to 25 kt. waves 4 ft.
.fri...n winds 20 to 25 kt. waves 4 ft.
winds and waves higher and visibilities lower in and near tstms.
$$
(5/7)
Latest Coastal Waters Forecast by KLWX
Issued 9/21/2026 4:58 PM America/New_York.
Valid through 9/22/2026 4:00 AM America/New_York.
fzus51 klwx 212058
cwflwx
expires:202609220800;;837023
coastal waters forecast
national weather service baltimore md/washington dc
458 pm edt mon sep 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-
458 pm edt mon sep 21 2026
...small craft advisory in effect through late tuesday night...
.rest of this afternoon...ne winds 10 kt. waves 1 ft. a slight
chance of showers.
.tonight...e winds 5 to 10 kt. waves 1 ft. showers with a chance of
tstms.
.tue...ne winds 10 kt with gusts to 20 kt. waves 1 ft. showers with
a chance of tstms. patchy fog. vsby 1 nm or less.
.tue night...ne winds 10 to 15 kt with gusts to 25 kt. waves 1 ft.
rain. patchy fog.
.wed...ne winds 10 to 15 kt with gusts to 20 kt. waves 1 ft. rain.
.wed night...ne winds 10 kt with gusts to 20 kt. waves 1 ft. a
chance of rain.
.thu...n winds 10 to 15 kt. waves 1 ft.
.fri...n winds 10 to 15 kt. waves 1 to 2 ft.
winds and waves higher and visibilities lower in and near tstms.
$$
(6/7)
Latest Coastal Waters Forecast by KLWX
Issued 9/21/2026 4:58 PM America/New_York.
Valid through 9/22/2026 4:00 AM America/New_York.
fzus51 klwx 212058
cwflwx
expires:202609220800;;837024
coastal waters forecast
national weather service baltimore md/washington dc
458 pm edt mon sep 21 2026
tidal potomac river and maryland portion of chesapeake bay.
forecasts of wave heights do not include effects of wind direction
relative to tidal currents. expect higher waves when winds are
blowing against the tidal flow. waves flat where waters are iced over.
anz536-220800-
tidal potomac from indian head to cobb island-
458 pm edt mon sep 21 2026
...small craft advisory in effect through late tuesday night...
.rest of this afternoon...ne winds 10 kt. waves 1 ft. a slight
chance of showers.
.tonight...e winds 10 to 15 kt with gusts to 20 kt. waves 2 ft.
showers with a chance of tstms.
.tue...ne winds 10 to 15 kt with gusts to 25 kt. waves 2 ft. showers
with a chance of tstms. patchy fog. vsby 1 nm or less.
.tue night...ne winds 15 to 20 kt with gusts to 25 kt. waves 2 ft.
rain with a chance of tstms. patchy fog.
.wed...ne winds 15 to 20 kt with gusts to 25 kt. waves 2 ft. rain.
patchy fog.
.wed night...ne winds 10 to 15 kt with gusts to 25 kt. waves 2 ft. a
chance of rain.
.thu...n winds 10 to 15 kt. waves 1 to 2 ft.
.fri...n winds 10 to 15 kt. waves 1 to 2 ft.
winds and waves higher and visibilities lower in and near tstms.
$$
(7/7)
Latest Coastal Waters Forecast by KLWX
Issued 9/21/2026 4:58 PM America/New_York.
Valid through 9/22/2026 4:00 AM America/New_York.
fzus51 klwx 212058
cwflwx
expires:202609220800;;837025
coastal waters forecast
national weather service baltimore md/washington dc
458 pm edt mon sep 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-
458 pm edt mon sep 21 2026
...small craft advisory in effect through late tuesday night...
...gale watch in effect from wednesday morning through late
wednesday night...
.rest of this afternoon...ne winds 10 kt. waves 2 ft.
.tonight...e winds 10 to 15 kt with gusts to 20 kt. waves 3 ft. a
chance of showers.
.tue...ne winds 20 to 25 kt. gusts up to 30 kt. waves 4 ft. showers
with a chance of tstms.
.tue night...ne winds 20 to 25 kt with gusts to 35 kt. waves 5 ft.
rain likely with a chance of tstms.
.wed...ne winds 20 to 25 kt with gusts to 35 kt. waves 5 ft. rain.
.wed night...ne winds 20 to 25 kt with gusts to 40 kt. waves 5 ft. a
chance of rain.
.thu...ne winds 20 to 25 kt. waves 4 ft...subsiding to 3 ft after
midnight.
.fri...n winds 15 to 20 kt. waves 3 ft.
winds and waves higher and visibilities lower in and near tstms.
$$
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