fzus51 klwx 202357
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coastal waters forecast
national weather service baltimore md/washington dc
757 pm edt mon apr 20 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.


anz531-210800-
chesapeake bay from pooles island to sandy point-
757 pm edt mon apr 20 2026

...small craft advisory in effect until 9 pm edt this evening...

.tonight...n winds 10 to 15 kt...becoming ne late. gusts up to
20 kt. waves 1 to 2 ft. 
.tue...ne winds 5 to 10 kt...becoming s in the afternoon. waves
1 ft. 
.tue night...s winds 10 to 15 kt with gusts to 20 kt. waves 2 ft. 
.wed...sw winds 5 to 10 kt. gusts up to 20 kt in the morning. waves
1 to 2 ft. a chance of showers. 
.wed night...nw winds 5 to 10 kt. waves 1 ft. 
.thu...nw winds 5 kt. waves less than 1 ft. 
.thu night...se winds around 5 kt. waves 1 ft or less. 
.fri...e winds around 5 kt. waves 1 ft or less. a chance of showers
through the night. 
.sat...e winds 5 to 10 kt. waves 1 ft. a chance of showers through
the day. showers likely through the night.  

$$

fzus51 klwx 202357
cwflwx
expires:202604210800;;716778

coastal waters forecast
national weather service baltimore md/washington dc
757 pm edt mon apr 20 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.


anz532-210800-
chesapeake bay from sandy point to north beach-
757 pm edt mon apr 20 2026

...small craft advisory in effect until 4 am edt tuesday...

.tonight...n winds 10 to 15 kt...becoming ne late. gusts up to
20 kt. waves 1 to 2 ft. 
.tue...ne winds 5 to 10 kt...becoming se in the afternoon. waves
1 ft. 
.tue night...s winds 10 to 15 kt with gusts to 20 kt. waves 2 ft. 
.wed...sw winds 10 to 15 kt. gusts up to 20 kt in the morning. waves
1 to 2 ft. a chance of showers. 
.wed night...nw winds 5 to 10 kt. waves 1 ft. 
.thu...n winds 5 kt. waves less than 1 ft. 
.thu night...se winds 5 kt. waves less than 1 ft. 
.fri...e winds 5 to 10 kt. waves 1 ft or less. a chance of showers
through the night. 
.sat...e winds 10 to 15 kt...becoming ne after midnight. waves 1 ft.
a chance of showers through the day. showers likely through the
night.  

$$

fzus51 klwx 202357
cwflwx
expires:202604210800;;716780

coastal waters forecast
national weather service baltimore md/washington dc
757 pm edt mon apr 20 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.


anz533-210800-
chesapeake bay from north beach to drum point-
757 pm edt mon apr 20 2026

...small craft advisory in effect until 4 am edt tuesday...

.tonight...n winds 10 to 15 kt with gusts to 20 kt. waves 2 to 3 ft.
.tue...ne winds 5 to 10 kt...becoming se late. waves 1 ft. 
.tue night...s winds 10 to 15 kt with gusts to 20 kt. waves 2 ft. 
.wed...sw winds 10 to 15 kt with gusts to 20 kt. waves 1 to 2 ft. a
chance of showers. 
.wed night...w winds 5 to 10 kt. waves 1 ft. 
.thu...n winds 5 to 10 kt. waves 1 ft. 
.thu night...se winds around 5 kt. waves 1 ft or less. 
.fri...se winds 5 to 10 kt. waves 1 ft. a chance of showers through
the night. 
.sat...e winds 10 to 15 kt...becoming ne after midnight. waves 1 to
2 ft. a chance of showers in the afternoon. showers likely through
the night.  

$$

fzus51 klwx 202357
cwflwx
expires:202604210800;;716783

coastal waters forecast
national weather service baltimore md/washington dc
757 pm edt mon apr 20 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.


anz534-210800-
chesapeake bay from drum point to smith point-
757 pm edt mon apr 20 2026

...small craft advisory in effect until 4 am edt tuesday...

.tonight...n winds 15 to 20 kt. gusts up to 25 kt until early
morning. waves 2 to 3 ft. 
.tue...ne winds 5 to 10 kt...becoming se late. waves 1 to 2 ft. 
.tue night...s winds 15 to 20 kt. gusts up to 20 kt... increasing to
25 kt after midnight. waves 3 ft. 
.wed...sw winds 15 to 20 kt with gusts to 25 kt... becoming w 5 to
10 kt in the afternoon. waves 2 to 3 ft. a chance of showers. 
.wed night...nw winds 5 to 10 kt. waves 1 ft. 
.thu...n winds 5 to 10 kt. waves 1 ft. 
.thu night...s winds 5 to 10 kt. waves 1 ft. 
.fri...se winds 5 to 10 kt. waves 1 ft. 
.sat...e winds 10 to 15 kt...becoming ne after midnight. waves 1 to
2 ft. a chance of showers in the afternoon. showers likely through
the night.  

$$

fzus51 klwx 202357
cwflwx
expires:202604210800;;716771

coastal waters forecast
national weather service baltimore md/washington dc
757 pm edt mon apr 20 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.


anz535-210800-
tidal potomac from key bridge to indian head-
757 pm edt mon apr 20 2026

...small craft advisory in effect until 9 pm edt this evening...

.tonight...n winds 5 to 10 kt. gusts up to 20 kt this evening. waves
1 ft. 
.tue...s winds 5 kt. waves less than 1 ft. 
.tue night...s winds 5 to 10 kt. waves 1 ft. 
.wed...sw winds 5 kt. waves less than 1 ft. showers likely. 
.wed night...nw winds 5 kt. waves less than 1 ft. 
.thu...nw winds 5 kt. waves less than 1 ft. 
.thu night...se winds around 5 kt. waves 1 ft. 
.fri...e winds around 5 kt. waves 1 ft. a chance of showers through
the night. 
.sat...ne winds 5 to 10 kt. waves 1 ft. a chance of showers in the
afternoon. showers likely through the night.  

$$

fzus51 klwx 202357
cwflwx
expires:202604210800;;716772

coastal waters forecast
national weather service baltimore md/washington dc
757 pm edt mon apr 20 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.


anz536-210800-
tidal potomac from indian head to cobb island-
757 pm edt mon apr 20 2026

...small craft advisory in effect until 9 pm edt this evening...

.tonight...n winds 10 to 15 kt with gusts to 20 kt... diminishing to
5 kt late. waves 1 ft. 
.tue...ne winds around 5 kt...becoming s late. waves 1 ft. 
.tue night...s winds 5 to 10 kt. waves 1 ft. 
.wed...sw winds 5 to 10 kt with gusts to 20 kt. waves 1 ft. showers
likely. 
.wed night...nw winds 5 to 10 kt. waves 1 ft. 
.thu...nw winds 5 kt. waves less than 1 ft. 
.thu night...se winds around 5 kt. waves 1 ft. 
.fri...e winds around 5 kt. waves 1 ft. 
.sat...se winds around 5 kt...becoming ne. waves 1 ft. a chance of
showers in the afternoon. showers likely through the night.  

$$

fzus51 klwx 202357
cwflwx
expires:202604210800;;716773

coastal waters forecast
national weather service baltimore md/washington dc
757 pm edt mon apr 20 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.


anz537-210800-
tidal potomac from cobb island to smith point-
757 pm edt mon apr 20 2026

...small craft advisory in effect until 4 am edt tuesday...

.tonight...n winds 10 to 15 kt with gusts to 20 kt. waves 2 ft. 
.tue...ne winds 5 to 10 kt...becoming se late. waves 1 ft. 
.tue night...s winds 10 to 15 kt. gusts up to 20 kt. waves 2 ft. 
.wed...sw winds 10 to 15 kt with gusts to 20 kt. waves 1 to 2 ft.
showers likely. 
.wed night...w winds 5 to 10 kt. waves 1 ft. 
.thu...n winds 5 to 10 kt. waves 1 ft. 
.thu night...se winds 5 kt. waves less than 1 ft. 
.fri...se winds 5 to 10 kt. waves 1 ft or less. 
.sat...e winds 10 to 15 kt...becoming ne after midnight. waves 1 to
2 ft. a chance of showers in the afternoon. showers likely through
the night.  

$$