fzus51 klwx 220148
cwflwx
expires:202607220800;;381985

coastal waters forecast
national weather service baltimore md/washington dc
948 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-
948 pm edt tue jul 21 2026

...small craft advisory in effect until 8 am edt wednesday...

.rest of tonight...sw winds 15 to 20 kt with gusts to 25 kt. waves
3 ft. patchy fog late this evening. showers and scattered tstms late
this evening, then numerous showers and scattered tstms. vsby 1 nm
or less. 
.wed...w winds 10 to 15 kt with gusts to 20 kt. waves 2 to 3 ft. a
chance of showers and tstms. 
.wed night...nw winds 10 kt...becoming n late. gusts up to 20 kt.
waves 2 ft. a chance of showers. 
.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 220148
cwflwx
expires:202607220800;;381988

coastal waters forecast
national weather service baltimore md/washington dc
948 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-
948 pm edt tue jul 21 2026

...small craft advisory in effect through wednesday morning...

.rest of tonight...sw winds 15 kt with gusts to 25 kt. waves 3 ft.
showers and scattered tstms late this evening, then numerous showers
and scattered tstms. patchy fog. vsby 1 nm or less. 
.wed...sw winds 10 to 15 kt with gusts to 25 kt. waves 2 to 3 ft.
showers likely. 
.wed night...w winds 10 kt...becoming n with gusts to 25 kt after
midnight. waves 2 ft. a chance of showers. 
.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 220148
cwflwx
expires:202607220800;;381990

coastal waters forecast
national weather service baltimore md/washington dc
948 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-
948 pm edt tue jul 21 2026

...small craft advisory in effect through wednesday morning...
...severe thunderstorm watch 509 in effect until midnight edt
tonight...

.rest of tonight...sw winds 15 to 20 kt with gusts to 25 kt. waves
3 ft. showers and scattered tstms late this evening, then numerous
showers and scattered tstms. patchy fog. vsby 1 nm or less. 
.wed...sw winds 15 to 20 kt...diminishing to 10 kt late. gusts up to
25 kt. waves 2 to 3 ft. showers likely. 
.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. a chance of showers and
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 220148
cwflwx
expires:202607220800;;381993

coastal waters forecast
national weather service baltimore md/washington dc
948 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-
948 pm edt tue jul 21 2026

...small craft advisory in effect through wednesday afternoon...
...severe thunderstorm watch 509 in effect until midnight edt
tonight...

.rest of tonight...sw winds 20 kt with gusts to 30 kt. waves 3 ft.
showers and numerous tstms late this evening, then showers and
scattered tstms. patchy fog. vsby 1 nm or less. 
.wed...sw winds 15 to 20 kt with gusts 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 220148
cwflwx
expires:202607220800;;381981

coastal waters forecast
national weather service baltimore md/washington dc
948 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-
948 pm edt tue jul 21 2026

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

.rest of tonight...sw winds 10 kt with gusts to 20 kt. waves 1 ft.
patchy fog late this evening. showers and scattered tstms late this
evening, then numerous showers and scattered tstms. vsby 1 nm or
less. 
.wed...w winds 5 to 10 kt. waves 1 ft. showers likely with a chance
of tstms. 
.wed night...nw winds 5 to 10 kt. waves 1 ft. a chance of showers. 
.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 220148
cwflwx
expires:202607220800;;381982

coastal waters forecast
national weather service baltimore md/washington dc
948 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-
948 pm edt tue jul 21 2026

...small craft advisory in effect until 4 am edt wednesday...
...severe thunderstorm watch 509 in effect until midnight edt
tonight...

.rest of tonight...sw winds 10 kt with gusts to 20 kt. waves 1 ft.
showers and scattered tstms late this evening, then scattered
showers and tstms. patchy fog. vsby 1 nm or less. 
.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. a chance of showers
and 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 220148
cwflwx
expires:202607220800;;381983

coastal waters forecast
national weather service baltimore md/washington dc
948 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-
948 pm edt tue jul 21 2026

...small craft advisory in effect through wednesday afternoon...
...severe thunderstorm watch 509 in effect until midnight edt
tonight...

.rest of tonight...sw winds 15 to 20 kt with gusts to 25 kt. waves
2 to 3 ft. showers. scattered tstms. patchy fog. vsby 1 nm or less. 
.wed...sw winds 15 to 20 kt with gusts to 25 kt. 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
likely 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.

$$