fzus51 klwx 212059
cwflwx
expires:202607220800;;369601

coastal waters forecast
national weather service baltimore md/washington dc
459 pm edt tue jul 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-
459 pm edt tue jul 21 2026

...small craft advisory in effect through wednesday morning...
...severe thunderstorm watch 509 in effect until 10 pm edt this
evening...

.rest of this afternoon...s winds 15 kt with gusts to 20 kt. waves
2 ft. showers and numerous tstms. 
.tonight...sw winds 15 kt with gusts to 25 kt. waves 3 ft. showers
and numerous tstms. 
.wed...w winds 10 to 15 kt with gusts to 25 kt. waves 2 to 3 ft. a
chance of showers. 
.wed night...nw winds 10 to 15 kt. gusts up to 20 kt. waves 2 ft. a
chance of showers and tstms. 
.thu...n winds 10 to 15 kt. gusts up to 25 kt in the morning. waves
2 ft. 
.thu night...ne winds 5 to 10 kt. waves 1 ft. 
.fri...e winds 5 to 10 kt. waves 1 ft. 
.sat...e winds 5 to 10 kt. waves 1 ft.  

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

$$

fzus51 klwx 212059
cwflwx
expires:202607220800;;369604

coastal waters forecast
national weather service baltimore md/washington dc
459 pm edt tue jul 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-
459 pm edt tue jul 21 2026

...small craft advisory in effect through wednesday morning...
...severe thunderstorm watch 509 in effect until 10 pm edt this
evening...

.rest of this afternoon...s winds 10 kt. waves 3 ft. showers and
numerous tstms. 
.tonight...sw winds 15 to 20 kt with gusts to 30 kt. waves 3 ft.
showers and scattered tstms. 
.wed...sw winds 10 to 15 kt with gusts to 25 kt. waves 2 to 3 ft.
showers likely with a chance of tstms. 
.wed night...nw winds 10 to 15 kt with gusts to 25 kt. waves 2 ft.
showers likely with a chance of tstms.
.thu...n winds 10 to 15 kt. gusts up to 25 kt in the morning. waves
2 ft. 
.thu night...e winds 5 to 10 kt. waves 1 ft. 
.fri...e winds 5 to 10 kt. waves 1 ft. 
.sat...e winds 5 to 10 kt. waves 1 ft.  

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

$$

fzus51 klwx 212059
cwflwx
expires:202607220800;;369606

coastal waters forecast
national weather service baltimore md/washington dc
459 pm edt tue jul 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-
459 pm edt tue jul 21 2026

...small craft advisory in effect through wednesday morning...
...severe thunderstorm watch 509 in effect until 10 pm edt this
evening...

.rest of this afternoon...sw winds 15 kt with gusts to 25 kt. waves
3 ft. showers and numerous tstms. 
.tonight...sw winds 15 to 20 kt with gusts to 30 kt. waves 3 ft.
showers and numerous tstms. 
.wed...sw winds 10 to 15 kt with gusts to 25 kt. waves 2 to 3 ft.
showers likely with a chance of tstms. 
.wed night...w winds 5 to 10 kt...becoming n 10 to 15 kt with gusts
to 25 kt after midnight. waves 2 to 3 ft. showers likely with a
chance of tstms. 
.thu...n winds 10 to 15 kt with gusts to 25 kt. waves 2 to 3 ft. 
.thu night...e winds 5 to 10 kt. waves 1 ft. 
.fri...e winds 5 to 10 kt. waves 1 to 2 ft. 
.sat...e winds 5 to 10 kt. waves 1 ft.  

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

$$

fzus51 klwx 212059
cwflwx
expires:202607220800;;369609

coastal waters forecast
national weather service baltimore md/washington dc
459 pm edt tue jul 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-
459 pm edt tue jul 21 2026

...small craft advisory in effect through wednesday afternoon...
...severe thunderstorm watch 509 in effect until 10 pm edt this
evening...

.rest of this afternoon...sw winds 20 kt with gusts to 25 kt. waves
3 ft. showers and numerous tstms. 
.tonight...sw winds 20 to 25 kt with gusts to 30 kt. waves 4 ft.
showers and numerous tstms. patchy fog. vsby 1 nm or less. 
.wed...sw winds 20 to 25 kt...diminishing to 10 to 15 kt late. gusts
up to 30 kt. waves 3 ft. showers with a chance of tstms. 
.wed night...sw winds 10 to 15 kt...becoming nw after midnight.
gusts up to 25 kt. waves 2 to 3 ft. showers with a chance of tstms. 
.thu...n winds 10 to 15 kt with gusts to 25 kt. waves 3 ft. 
.thu night...e winds 5 to 10 kt. waves 1 to 2 ft. 
.fri...e winds 10 to 15 kt. waves 1 to 2 ft. 
.sat...ne winds 5 to 10 kt. waves 1 ft.  

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

$$

fzus51 klwx 212059
cwflwx
expires:202607220800;;369597

coastal waters forecast
national weather service baltimore md/washington dc
459 pm edt tue jul 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-
459 pm edt tue jul 21 2026

...small craft advisory in effect until 4 am edt wednesday...
...severe thunderstorm watch 509 in effect until 10 pm edt this
evening...

.rest of this afternoon...sw winds 10 kt with gusts to 20 kt. waves
1 ft. showers and numerous tstms. 
.tonight...sw winds 10 to 15 kt with gusts to 20 kt. waves 1 ft.
showers and numerous tstms. 
.wed...w winds 10 kt. waves 1 ft. showers likely with a chance of
tstms. 
.wed night...nw winds 5 to 10 kt. waves 1 ft. showers likely with a
chance of tstms. 
.thu...n winds 5 to 10 kt. waves 1 ft. 
.thu night...e winds 5 kt. waves less than 1 ft. 
.fri...e winds 5 to 10 kt. waves 1 ft. 
.sat...se winds around 5 kt. waves 1 ft or less.  

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

$$

fzus51 klwx 212059
cwflwx
expires:202607220800;;369598

coastal waters forecast
national weather service baltimore md/washington dc
459 pm edt tue jul 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-
459 pm edt tue jul 21 2026

...small craft advisory in effect until 4 am edt wednesday...
...severe thunderstorm watch 509 in effect until 10 pm edt this
evening...

.rest of this afternoon...sw winds 20 kt with gusts to 30 kt. waves
2 ft. showers and numerous tstms. 
.tonight...sw winds 10 to 15 kt with gusts to 25 kt. waves 1 to
2 ft. showers and numerous tstms. 
.wed...sw winds 5 to 10 kt with gusts to 20 kt. waves 1 ft. showers
likely with a chance of tstms. 
.wed night...nw winds 5 to 10 kt. waves 1 ft. showers likely with a
chance of tstms. 
.thu...n winds 5 to 10 kt. waves 1 ft. 
.thu night...ne winds 5 kt. waves less than 1 ft. 
.fri...e winds 5 to 10 kt. waves 1 ft. 
.sat...e winds around 5 kt. waves 1 ft.  

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

$$

fzus51 klwx 212059
cwflwx
expires:202607220800;;369599

coastal waters forecast
national weather service baltimore md/washington dc
459 pm edt tue jul 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-
459 pm edt tue jul 21 2026

...small craft advisory in effect through wednesday afternoon...
...severe thunderstorm watch 509 in effect until 10 pm edt this
evening...

.rest of this afternoon...sw winds 20 kt with gusts to 25 kt. waves
2 ft. showers and numerous tstms. 
.tonight...sw winds 15 to 20 kt with gusts to 30 kt. waves 2 to
3 ft. showers and numerous tstms. 
.wed...sw winds 15 to 20 kt. gusts up to 30 kt... diminishing to
20 kt late. waves 2 to 3 ft. showers with a chance of tstms. 
.wed night...nw winds 10 to 15 kt. gusts up to 25 kt. waves 1 to
2 ft. showers with a chance of tstms. 
.thu...n winds 10 to 15 kt with gusts to 25 kt. waves 2 ft. 
.thu night...e winds 5 to 10 kt. waves 1 to 2 ft. 
.fri...e winds 5 to 10 kt. waves 1 to 2 ft. 
.sat...e winds around 5 kt. waves 1 ft.  

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

$$