fzus51 klwx 212219
cwflwx
expires:202607220800;;374051

coastal waters forecast
national weather service baltimore md/washington dc
619 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-
619 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...

.tonight...sw winds 15 kt with gusts to 25 kt. waves 2 to 3 ft.
showers and numerous tstms this evening, then numerous showers and
scattered tstms after midnight. 
.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 kt...becoming n late. 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. 
.fri night...e winds 5 to 10 kt. waves 1 ft. 
.sat...e winds 5 to 10 kt. waves 1 ft. 
.sun...se 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 212219
cwflwx
expires:202607220800;;374054

coastal waters forecast
national weather service baltimore md/washington dc
619 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-
619 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...

.tonight...sw winds 15 to 20 kt with gusts to 30 kt. waves 3 ft.
showers and scattered tstms, mainly this evening. 
.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 10 kt...becoming n with gusts to 25 kt after
midnight. 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 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 212219
cwflwx
expires:202607220800;;374056

coastal waters forecast
national weather service baltimore md/washington dc
619 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-
619 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...

.tonight...sw winds 15 to 20 kt with gusts to 30 kt. waves 3 ft.
showers. numerous tstms, mainly this evening. 
.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 10 kt. waves 2 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.  

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

$$

fzus51 klwx 212219
cwflwx
expires:202607220800;;374059

coastal waters forecast
national weather service baltimore md/washington dc
619 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-
619 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...

.tonight...sw winds 20 to 25 kt with gusts to 30 kt. waves 3 ft.
showers. numerous tstms, mainly this evening. patchy fog after
midnight. 
.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 20 kt...increasing to 25 kt late. 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 with gusts to 20 kt. waves 2 ft. 
.fri night...e winds 5 to 10 kt. gusts up to 20 kt in the evening.
waves 1 to 2 ft. 
.sat...ne winds 5 to 10 kt. waves 1 ft. 
.sun...e winds 5 kt...becoming s. waves 1 ft or less.  

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

$$

fzus51 klwx 212219
cwflwx
expires:202607220800;;374047

coastal waters forecast
national weather service baltimore md/washington dc
619 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-
619 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...

.tonight...sw winds 10 to 15 kt with gusts to 20 kt. waves 1 ft.
showers and numerous tstms this evening, then numerous showers and
scattered tstms after midnight. 
.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. 
.fri night...e winds 5 to 10 kt. waves 1 ft. 
.sat...se winds around 5 kt. waves 1 ft or less. 
.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 212219
cwflwx
expires:202607220800;;374048

coastal waters forecast
national weather service baltimore md/washington dc
619 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-
619 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...

.tonight...sw winds 10 to 15 kt with gusts to 25 kt. waves 1 to
2 ft. showers and numerous tstms this evening, then numerous showers
with isolated tstms after midnight. 
.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. 
.fri night...e winds around 5 kt. waves 1 ft. 
.sat...e 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 212219
cwflwx
expires:202607220800;;374049

coastal waters forecast
national weather service baltimore md/washington dc
619 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-
619 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...

.tonight...sw winds 15 to 20 kt with gusts to 30 kt. waves 2 to
3 ft. showers. numerous tstms, mainly this evening. 
.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...w winds 5 to 10 kt...becoming n 10 to 15 kt late. gusts
up to 20 kt...increasing to 25 kt late. 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 10 kt with gusts to 20 kt. waves 2 ft. 
.fri night...e winds 5 to 10 kt. waves 1 to 2 ft. 
.sat...e winds around 5 kt. waves 1 ft. 
.sun...se winds around 5 kt. waves 1 ft or less.  

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

$$