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Home : xt_USA : xt_Great Lakes : Weather Bulletin

(1/7) Latest Coastal Waters Forecast by KLWX
Issued 9/4/2026 5:00 AM America/New_York.
Valid through 9/4/2026 8:00 PM America/New_York.

fzus51 klwx 040900
cwflwx
expires:202609050000;;881815

coastal waters forecast
national weather service baltimore md/washington dc
500 am edt fri sep 4 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.


anz531-050000-
chesapeake bay from pooles island to sandy point-
500 am edt fri sep 4 2026

.rest of the overnight...w winds 5 kt. waves less than 1 ft. a
chance of showers with a slight chance of tstms. 
.today...nw winds 5 to 10 kt. waves 1 ft. 
.tonight...nw winds 5 to 10 kt. waves 1 ft. a chance of showers and
tstms. 
.sat...n winds 5 to 10 kt. waves 1 ft. 
.sat night...ne winds 5 to 10 kt. waves 1 ft. 
.sun...ne winds 5 to 10 kt. waves 1 ft. 
.sun night...e winds 5 to 10 kt. waves 1 ft. 
.mon...se winds around 5 kt. waves 1 ft or less. 
.tue...sw winds 5 to 10 kt. waves 1 ft.  

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

$$

(2/7) Latest Coastal Waters Forecast by KLWX
Issued 9/4/2026 5:00 AM America/New_York.
Valid through 9/4/2026 8:00 PM America/New_York.

fzus51 klwx 040900
cwflwx
expires:202609050000;;881818

coastal waters forecast
national weather service baltimore md/washington dc
500 am edt fri sep 4 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.


anz532-050000-
chesapeake bay from sandy point to north beach-
500 am edt fri sep 4 2026

.rest of the overnight...w winds 10 kt. waves 1 ft. a chance of
showers with a slight chance of tstms. 
.today...nw winds 5 to 10 kt. waves 1 ft. 
.tonight...nw winds 5 to 10 kt. waves 1 ft. a chance of showers and
tstms. 
.sat...n winds 5 to 10 kt. waves 1 ft. 
.sat night...ne winds 5 to 10 kt. waves 1 ft. 
.sun...ne winds 10 kt. waves 1 ft. 
.sun night...e winds 5 to 10 kt. waves 1 ft. 
.mon...e winds 5 kt...becoming s. waves 1 ft. 
.tue...sw winds 5 to 10 kt. waves 1 ft.  

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

$$

(3/7) Latest Coastal Waters Forecast by KLWX
Issued 9/4/2026 5:00 AM America/New_York.
Valid through 9/4/2026 8:00 PM America/New_York.

fzus51 klwx 040900
cwflwx
expires:202609050000;;881820

coastal waters forecast
national weather service baltimore md/washington dc
500 am edt fri sep 4 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.


anz533-050000-
chesapeake bay from north beach to drum point-
500 am edt fri sep 4 2026

.rest of the overnight...w winds 5 kt. waves less than 1 ft. a
chance of showers with a slight chance of tstms. 
.today...nw winds 5 to 10 kt. waves 1 ft. 
.tonight...nw winds 5 to 10 kt. waves 1 ft. a chance of showers and
tstms. 
.sat...n winds 5 to 10 kt. waves 1 ft. 
.sat night...ne winds 5 to 10 kt. waves 1 ft. 
.sun...ne winds 10 kt. waves 2 ft. 
.sun night...e winds 10 to 15 kt. waves 1 to 2 ft. 
.mon...e winds 5 to 10 kt...becoming sw after midnight. waves 1 ft. 
.tue...sw winds 5 to 10 kt. waves 1 ft.  

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

$$

(4/7) Latest Coastal Waters Forecast by KLWX
Issued 9/4/2026 5:00 AM America/New_York.
Valid through 9/4/2026 8:00 PM America/New_York.

fzus51 klwx 040900
cwflwx
expires:202609050000;;881823

coastal waters forecast
national weather service baltimore md/washington dc
500 am edt fri sep 4 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.


anz534-050000-
chesapeake bay from drum point to smith point-
500 am edt fri sep 4 2026

.rest of the overnight...w winds 10 kt. waves 1 ft. 
.today...nw winds 5 to 10 kt. waves 1 ft. 
.tonight...w winds 5 to 10 kt. waves 1 ft. a chance of showers and
tstms. 
.sat...n winds 5 to 10 kt. waves 1 ft. 
.sat night...ne winds 5 to 10 kt. waves 1 ft. a chance of showers
and tstms. 
.sun...ne winds 10 kt. waves 1 ft. 
.sun night...e winds 10 to 15 kt with gusts to 20 kt. waves 2 ft. 
.mon...e winds 5 to 10 kt...becoming s after midnight. waves 1 ft. 
.tue...sw winds 10 to 15 kt. waves 1 to 2 ft.  

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

$$

(5/7) Latest Coastal Waters Forecast by KLWX
Issued 9/4/2026 5:00 AM America/New_York.
Valid through 9/4/2026 8:00 PM America/New_York.

fzus51 klwx 040900
cwflwx
expires:202609050000;;881811

coastal waters forecast
national weather service baltimore md/washington dc
500 am edt fri sep 4 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.


anz535-050000-
tidal potomac from key bridge to indian head-
500 am edt fri sep 4 2026

.rest of the overnight...w winds 5 kt. waves less than 1 ft. a
slight chance of showers and tstms. 
.today...nw winds 5 to 10 kt. waves 1 ft. showers likely with a
chance of tstms. 
.tonight...nw winds around 5 kt. waves 1 ft. a chance of showers and
tstms. 
.sat...n winds 5 kt. waves less than 1 ft. 
.sat night...ne winds around 5 kt. waves 1 ft. a chance of showers
and tstms. 
.sun...ne winds 5 to 10 kt. waves 1 ft. 
.sun night...e winds around 5 kt. waves 1 ft or less. 
.mon...se winds around 5 kt. waves 1 ft. 
.tue...sw winds around 5 kt. waves 1 ft.  

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

$$

(6/7) Latest Coastal Waters Forecast by KLWX
Issued 9/4/2026 5:00 AM America/New_York.
Valid through 9/4/2026 8:00 PM America/New_York.

fzus51 klwx 040900
cwflwx
expires:202609050000;;881812

coastal waters forecast
national weather service baltimore md/washington dc
500 am edt fri sep 4 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.


anz536-050000-
tidal potomac from indian head to cobb island-
500 am edt fri sep 4 2026

.rest of the overnight...w winds 5 kt. waves less than 1 ft. a
slight chance of showers and tstms. 
.today...nw winds around 5 kt. waves 1 ft. a chance of showers and
tstms. 
.tonight...nw winds around 5 kt. waves 1 ft. a chance of showers and
tstms. 
.sat...n winds 5 kt. waves less than 1 ft. a chance of showers and
tstms. 
.sat night...ne winds around 5 kt. waves 1 ft. a chance of showers
and tstms. 
.sun...ne winds 5 to 10 kt. waves 1 ft. 
.sun night...e winds 5 to 10 kt. waves 1 ft. 
.mon...se winds around 5 kt. waves 1 ft. 
.tue...sw winds around 5 kt. waves 1 ft.  

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

$$

(7/7) Latest Coastal Waters Forecast by KLWX
Issued 9/4/2026 5:00 AM America/New_York.
Valid through 9/4/2026 8:00 PM America/New_York.

fzus51 klwx 040900
cwflwx
expires:202609050000;;881813

coastal waters forecast
national weather service baltimore md/washington dc
500 am edt fri sep 4 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.


anz537-050000-
tidal potomac from cobb island to smith point-
500 am edt fri sep 4 2026

.rest of the overnight...w winds 5 kt. waves less than 1 ft. 
.today...nw winds 5 kt. waves less than 1 ft. 
.tonight...w winds 5 to 10 kt. waves 1 ft or less. a chance of
showers and tstms. 
.sat...n winds 5 to 10 kt. waves 1 ft. a chance of showers and
tstms. 
.sat night...ne winds 5 to 10 kt. waves 1 ft. a chance of showers
and tstms. 
.sun...ne winds 5 to 10 kt. waves 1 ft. 
.sun night...e winds 5 to 10 kt. waves 2 ft. 
.mon...e winds 5 to 10 kt...becoming s after midnight. waves 1 ft. 
.tue...s winds 5 to 10 kt. waves 1 ft or less.  

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

$$