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coastal waters forecast
national weather service baltimore md/washington dc
227 pm edt tue aug 18 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.


anz531-190800-
chesapeake bay from pooles island to sandy point-
227 pm edt tue aug 18 2026

.this afternoon...n winds 5 kt. waves less than 1 ft. a slight
chance of showers. 
.tonight...n winds around 5 kt. waves 1 ft or less. 
.wed...w winds 5 kt. waves flat. 
.wed night...sw winds 5 kt. waves flat. 
.thu...n winds 5 kt. waves flat. showers likely. 
.thu night...n winds 5 to 10 kt. waves 1 ft or less. a chance of
showers. 
.fri...e winds 5 to 10 kt. waves 1 ft. a chance of showers in the
afternoon. showers likely with a chance of tstms through the night. 
.sat...se winds 5 kt. waves less than 1 ft. showers likely in the
morning. a chance of showers. a chance of tstms through the night.  

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

$$

fzus51 klwx 181827
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expires:202608190800;;947847

coastal waters forecast
national weather service baltimore md/washington dc
227 pm edt tue aug 18 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.


anz532-190800-
chesapeake bay from sandy point to north beach-
227 pm edt tue aug 18 2026

.this afternoon...n winds 5 kt. waves less than 1 ft. a slight
chance of showers. 
.tonight...n winds around 5 kt. waves 1 ft or less. 
.wed...w winds 5 kt. waves flat. 
.wed night...sw winds 5 kt. waves less than 1 ft. 
.thu...ne winds 5 kt. waves less than 1 ft. showers likely. 
.thu night...ne winds 5 to 10 kt. waves 1 ft. a chance of showers
and tstms. 
.fri...ne winds 5 to 10 kt...becoming se after midnight. waves 1 ft.
a chance of showers in the afternoon. showers likely with a chance
of tstms through the night. 
.sat...se winds 5 kt. waves less than 1 ft. showers likely in the
morning. a chance of showers. a chance of tstms through the night.  

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

$$

fzus51 klwx 181827
cwflwx
expires:202608190800;;947849

coastal waters forecast
national weather service baltimore md/washington dc
227 pm edt tue aug 18 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.


anz533-190800-
chesapeake bay from north beach to drum point-
227 pm edt tue aug 18 2026

.this afternoon...n winds 5 to 10 kt. waves 1 ft. a slight chance of
showers. 
.tonight...n winds around 5 kt. waves 1 ft or less. 
.wed...nw winds 5 kt. waves less than 1 ft. 
.wed night...sw winds 5 kt. waves less than 1 ft. 
.thu...nw winds 5 kt. waves less than 1 ft. showers likely. 
.thu night...ne winds 5 to 10 kt. waves 1 ft. a chance of showers
and tstms. 
.fri...ne winds 5 to 10 kt...becoming se after midnight. waves 1 ft.
showers likely. a chance of tstms through the night. 
.sat...se winds 5 kt. waves less than 1 ft. showers likely. a chance
of tstms through the night. a chance of showers after midnight.  

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

$$

fzus51 klwx 181827
cwflwx
expires:202608190800;;947852

coastal waters forecast
national weather service baltimore md/washington dc
227 pm edt tue aug 18 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.


anz534-190800-
chesapeake bay from drum point to smith point-
227 pm edt tue aug 18 2026

.this afternoon...nw winds 10 kt. waves 1 ft. a slight chance of
showers and tstms. 
.tonight...n winds 5 to 10 kt...becoming ne after midnight. waves
1 ft. 
.wed...nw winds 5 kt. waves less than 1 ft. 
.wed night...s winds 5 to 10 kt. waves 1 ft. 
.thu...s winds 5 to 10 kt. waves 1 ft. showers likely with a chance
of tstms. 
.thu night...e winds 5 to 10 kt. waves 1 ft. showers likely with a
chance of tstms. 
.fri...e winds 5 to 10 kt. waves 1 ft. a chance of showers in the
morning, then showers likely with a chance of tstms. 
.sat...se winds 5 to 10 kt...becoming sw after midnight. waves 1 ft.
showers likely .  

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

$$

fzus51 klwx 181827
cwflwx
expires:202608190800;;947840

coastal waters forecast
national weather service baltimore md/washington dc
227 pm edt tue aug 18 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.


anz535-190800-
tidal potomac from key bridge to indian head-
227 pm edt tue aug 18 2026

.this afternoon...nw winds 5 kt. waves less than 1 ft. 
.tonight...n winds around 5 kt. waves 1 ft. 
.wed...nw winds around 5 kt. waves 1 ft. 
.wed night...sw winds around 5 kt. waves 1 ft or less. 
.thu...n winds around 5 kt. waves 1 ft. showers likely. 
.thu night...n winds around 5 kt. waves 1 ft. a chance of showers
and tstms. 
.fri...e winds around 5 kt. waves 1 ft. a chance of showers in the
afternoon. showers likely with a chance of tstms through the night. 
.sat...se winds around 5 kt. waves 1 ft. a chance of showers.  

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

$$

fzus51 klwx 181827
cwflwx
expires:202608190800;;947841

coastal waters forecast
national weather service baltimore md/washington dc
227 pm edt tue aug 18 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.


anz536-190800-
tidal potomac from indian head to cobb island-
227 pm edt tue aug 18 2026

.this afternoon...nw winds 5 kt. waves less than 1 ft. a slight
chance of showers. 
.tonight...n winds around 5 kt. waves 1 ft. 
.wed...nw winds around 5 kt. waves 1 ft. 
.wed night...s winds around 5 kt. waves 1 ft. 
.thu...ne winds around 5 kt. waves 1 ft. showers likely. 
.thu night...n winds around 5 kt. waves 1 ft. showers likely with a
chance of tstms. 
.fri...e winds around 5 kt. waves 1 ft or less. showers likely with
a chance of tstms. 
.sat...se winds around 5 kt. waves 1 ft. a chance of showers in the
morning, then showers likely through the night. a chance of showers
after midnight.  

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

$$

fzus51 klwx 181827
cwflwx
expires:202608190800;;947842

coastal waters forecast
national weather service baltimore md/washington dc
227 pm edt tue aug 18 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.


anz537-190800-
tidal potomac from cobb island to smith point-
227 pm edt tue aug 18 2026

.this afternoon...nw winds 5 kt. waves less than 1 ft. a slight
chance of showers and tstms. 
.tonight...n winds around 5 kt. waves 1 ft or less. 
.wed...nw winds around 5 kt. waves flat. 
.wed night...s winds around 5 kt. waves 1 ft. 
.thu...s winds around 5 kt. waves 1 ft or less. showers with a
chance of tstms. 
.thu night...ne winds 5 to 10 kt. waves 1 ft. showers likely with a
chance of tstms. 
.fri...e winds 5 to 10 kt. waves 1 ft. a chance of showers in the
morning, then showers likely with a chance of tstms. 
.sat...se winds 5 kt. waves less than 1 ft. showers likely. a chance
of showers after midnight.  

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

$$