fzus51 klwx 221621
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coastal waters forecast
national weather service baltimore md/washington dc
1221 pm edt wed jul 22 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.


anz531-230800-
chesapeake bay from pooles island to sandy point-
1221 pm edt wed jul 22 2026

...small craft advisory in effect from 9 pm edt this evening through
thursday morning...

.this afternoon...w winds 10 kt. waves 1 ft. scattered showers with
a slight chance of tstms. 
.tonight...nw winds 10 to 15 kt...becoming n after midnight. gusts
up to 20 kt. waves 1 to 2 ft. scattered showers with a chance of
tstms. 
.thu...n winds 10 to 15 kt with gusts to 20 kt... becoming ne 5 kt
late. waves 1 to 2 ft. 
.thu night...e winds around 5 kt. waves flat. 
.fri...e winds around 5 kt. waves 1 ft. 
.fri night...e winds 5 to 10 kt. waves 1 ft. 
.sat...e winds 5 kt...becoming s. waves 1 ft. 
.sun...s winds 5 to 10 kt. waves 1 ft or less. a chance of showers
through the night.  

winds and waves higher and visibilities lower in and near tstms.

$$

fzus51 klwx 221621
cwflwx
expires:202607230800;;416164

coastal waters forecast
national weather service baltimore md/washington dc
1221 pm edt wed jul 22 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.


anz532-230800-
chesapeake bay from sandy point to north beach-
1221 pm edt wed jul 22 2026

...small craft advisory in effect from 9 pm edt this evening through
thursday morning...

.this afternoon...w winds 10 kt. waves 1 ft. scattered showers with
a chance of tstms. 
.tonight...nw winds 5 to 10 kt...becoming n 15 kt with gusts to
20 kt after midnight. waves 1 to 2 ft. scattered showers with a
chance of tstms. 
.thu...n winds 10 to 15 kt with gusts to 20 kt... becoming ne 5 kt
late. waves 2 ft. 
.thu night...e winds around 5 kt. waves 1 ft or less. 
.fri...e winds 5 to 10 kt. waves 1 ft. 
.fri night...e winds 5 to 10 kt. waves 1 ft. 
.sat...e winds around 5 kt. waves 1 ft. 
.sun...s winds 5 to 10 kt. waves 1 ft or less. a chance of showers
through the night.  

winds and waves higher and visibilities lower in and near tstms.

$$

fzus51 klwx 221621
cwflwx
expires:202607230800;;416166

coastal waters forecast
national weather service baltimore md/washington dc
1221 pm edt wed jul 22 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.


anz533-230800-
chesapeake bay from north beach to drum point-
1221 pm edt wed jul 22 2026

...small craft advisory in effect from midnight edt tonight through
thursday morning...

.this afternoon...w winds 5 to 10 kt. waves 1 ft. numerous showers
with a chance of tstms. 
.tonight...w winds 5 to 10 kt...becoming n 15 to 20 kt after
midnight. waves 1 ft...building to 3 ft after midnight. scattered
showers with a chance of tstms. 
.thu...n winds 10 to 15 kt with gusts to 20 kt. waves 2 to 3 ft. 
.thu night...e winds 5 kt. waves less than 1 ft. 
.fri...e winds 5 to 10 kt. waves 1 ft. 
.fri night...e winds 5 to 10 kt. waves 1 ft. 
.sat...e winds around 5 kt. waves 1 ft. 
.sun...se winds 5 to 10 kt...becoming sw after midnight. waves 1 ft
or less. a chance of showers through the night. 

winds and waves higher and visibilities lower in and near tstms.

$$

fzus51 klwx 221621
cwflwx
expires:202607230800;;416169

coastal waters forecast
national weather service baltimore md/washington dc
1221 pm edt wed jul 22 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.


anz534-230800-
chesapeake bay from drum point to smith point-
1221 pm edt wed jul 22 2026

...small craft advisory in effect until 6 pm edt this evening...
...small craft advisory in effect from midnight edt tonight through
thursday morning...

.this afternoon...sw winds 10 to 15 kt with gusts to 20 kt. waves
2 to 3 ft. showers with a chance of tstms. 
.tonight...sw winds 5 to 10 kt...becoming n 10 to 15 kt after
midnight. gusts up to 20 kt. waves 2 to 3 ft. showers with a chance
of tstms. 
.thu...n winds 10 to 15 kt with gusts to 20 kt. waves 2 to 3 ft. a
chance of showers. 
.thu night...ne winds 5 to 10 kt. waves 1 ft. 
.fri...e winds 5 to 10 kt. waves 1 ft. 
.fri night...e winds 5 to 10 kt. waves 1 ft. 
.sat...e winds 5 to 10 kt. waves 1 ft. 
.sun...e winds 5 kt...becoming s. waves 1 ft or less. a chance of
showers through the night.  

winds and waves higher and visibilities lower in and near tstms.

$$

fzus51 klwx 221621
cwflwx
expires:202607230800;;416157

coastal waters forecast
national weather service baltimore md/washington dc
1221 pm edt wed jul 22 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.


anz535-230800-
tidal potomac from key bridge to indian head-
1221 pm edt wed jul 22 2026

.this afternoon...w winds 5 kt. waves less than 1 ft. numerous
showers with a chance of tstms. 
.tonight...n winds 5 to 10 kt. waves 1 ft. scattered showers with a
chance of tstms. 
.thu...n winds 5 to 10 kt. waves 1 ft. 
.thu night...ne winds around 5 kt. waves 1 ft or less. 
.fri...e winds around 5 kt. waves 1 ft. 
.fri night...e winds around 5 kt. waves 1 ft or less. 
.sat...se winds around 5 kt. waves 1 ft. 
.sun...s winds around 5 kt. waves 1 ft. a chance of showers through
the night.  

winds and waves higher and visibilities lower in and near tstms.

$$

fzus51 klwx 221621
cwflwx
expires:202607230800;;416158

coastal waters forecast
national weather service baltimore md/washington dc
1221 pm edt wed jul 22 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.


anz536-230800-
tidal potomac from indian head to cobb island-
1221 pm edt wed jul 22 2026

.this afternoon...w winds 5 kt. waves less than 1 ft. numerous
showers with a chance of tstms. 
.tonight...sw winds 5 kt...becoming n in the late evening and
overnight. waves 1 ft. scattered showers with a chance of tstms. 
.thu...n winds 5 to 10 kt. waves 1 ft. 
.thu night...ne winds around 5 kt. waves 1 ft. 
.fri...e winds around 5 kt. waves 1 ft. 
.fri night...e winds around 5 kt. waves 1 ft. 
.sat...se winds around 5 kt. waves 1 ft. 
.sun...s winds around 5 kt. waves 1 ft. a chance of showers through
the night.  

winds and waves higher and visibilities lower in and near tstms.

$$

fzus51 klwx 221621
cwflwx
expires:202607230800;;416159

coastal waters forecast
national weather service baltimore md/washington dc
1221 pm edt wed jul 22 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.


anz537-230800-
tidal potomac from cobb island to smith point-
1221 pm edt wed jul 22 2026

...small craft advisory in effect until 6 pm edt this evening...
...small craft advisory in effect from midnight edt tonight through
thursday morning...

.this afternoon...w winds 10 kt with gusts to 20 kt. waves 1 to
2 ft. numerous showers with a chance of tstms. 
.tonight...w winds 5 to 10 kt...becoming n 10 to 15 kt with gusts to
20 kt after midnight. waves 1 to 2 ft. showers with a chance of
tstms. 
.thu...n winds 10 to 15 kt. gusts up to 20 kt until late afternoon.
waves 1 to 2 ft. a chance of showers. 
.thu night...ne winds 5 kt. waves less than 1 ft. 
.fri...e winds 5 to 10 kt. waves 1 ft. 
.fri night...e winds 5 to 10 kt. waves 1 ft. 
.sat...e winds 5 to 10 kt...becoming s after midnight. waves 1 ft. 
.sun...s winds around 5 kt. waves 1 ft or less. a chance of showers
through the night.  

winds and waves higher and visibilities lower in and near tstms.

$$