810
FZUS51 KLWX 100834
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
434 AM EDT WED SEP 10 2025
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.
ANZ500-102300-
434 AM EDT WED SEP 10 2025
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
CANADIAN HIGH PRESSURE REMAINS SITUATED TO OUR NORTH TODAY AS A WAVE
OF LOW PRESSURE PASSES OFFSHORE TO THE SOUTHEAST. A DRY FRONT WILL
DISSIPATE AS IT APPROACHES ON THURSDAY, THEN ANOTHER AREA OF
CANADIAN HIGH PRESSURE WILL DRIFT TOWARD NEW ENGLAND THIS WEEKEND,
RESULTING IN CONTINUED DRY CONDITIONS. SMALL CRAFT ADVISORIES MAY
MAY NEED TO BE EXTENDED INTO TONIGHT FOR PORTIONS OF THE WATERS.
ANZ535-102300-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
434 AM EDT WED SEP 10 2025
REST OF THE OVERNIGHT
N WINDS 10 KT. WAVES 1 FT. A SLIGHT CHANCE
OF SHOWERS.
TODAY
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
TONIGHT
N WINDS AROUND 5 KT. WAVES 1 FT.
THU
N WINDS 5 KT. WAVES LESS THAN 1 FT.
THU NIGHT
N WINDS AROUND 5 KT. WAVES 1 FT.
FRI
NE WINDS AROUND 5 KT. WAVES 1 FT.
FRI NIGHT
SE WINDS AROUND 5 KT. WAVES 1 FT.
SAT
SE WINDS AROUND 5 KT. WAVES 1 FT.
SUN
S WINDS AROUND 5 KT. WAVES 1 FT.
ANZ536-102300-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
434 AM EDT WED SEP 10 2025
REST OF THE OVERNIGHT
N WINDS 10 KT WITH GUSTS TO 20 KT. WAVES
1 FT. A CHANCE OF SHOWERS.
TODAY
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS. VSBY
1 TO 3 NM.
TONIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT.
THU
N WINDS 5 KT. WAVES LESS THAN 1 FT.
THU NIGHT
N WINDS AROUND 5 KT. WAVES 1 FT.
FRI
NE WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI NIGHT
SE WINDS AROUND 5 KT. WAVES 1 FT.
SAT
SE WINDS AROUND 5 KT. WAVES 1 FT.
SUN
S WINDS 5 KT. WAVES LESS THAN 1 FT.
ANZ537-102300-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
434 AM EDT WED SEP 10 2025
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON
REST OF THE OVERNIGHT
N WINDS 20 KT WITH GUSTS TO 25 KT. WAVES
3 FT. A CHANCE OF SHOWERS.
TODAY
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 TO 3 FT. A
CHANCE OF SHOWERS. VSBY 1 TO 3 NM.
TONIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
THU
N WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
NE WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI
NE WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT.
SAT...NE WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT.
SUN...W WINDS 5 KT
BECOMING S. WAVES 1 FT.
ANZ530-102300-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
434 AM EDT WED SEP 10 2025
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON
REST OF THE OVERNIGHT
NE WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
1 FT. A SLIGHT CHANCE OF SHOWERS.
TODAY
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A
CHANCE OF SHOWERS. VSBY 1 TO 3 NM.
TONIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT.
THU
N WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
N WINDS 5 KT. WAVES FLAT.
FRI
NE WINDS 5 KT. WAVES FLAT.
FRI NIGHT
SE WINDS AROUND 5 KT. WAVES FLAT.
SAT
S WINDS AROUND 5 KT. WAVES FLAT.
SUN
S WINDS 5 KT. WAVES LESS THAN 1 FT.
ANZ531-102300-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
434 AM EDT WED SEP 10 2025
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON
REST OF THE OVERNIGHT
NE WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
2 FT. A CHANCE OF SHOWERS.
TODAY
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A
CHANCE OF SHOWERS.
TONIGHT
N WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
THU
N WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
N WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI
NE WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
SAT...SE WINDS 5 TO 10 KT
BECOMING SW AFTER MIDNIGHT. WAVES 1 FT
OR LESS.
SUN...S WINDS 5 TO 10 KT
BECOMING N AFTER MIDNIGHT. WAVES 1 FT.
ANZ538-102300-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
434 AM EDT WED SEP 10 2025
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON
REST OF THE OVERNIGHT
N WINDS 10 KT. WAVES 1 FT. A SLIGHT CHANCE
OF SHOWERS.
TODAY
N WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A CHANCE OF
SHOWERS.
TONIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
THU
N WINDS 5 KT. WAVES FLAT.
THU NIGHT
N WINDS 5 KT. WAVES FLAT.
FRI
NE WINDS 5 KT. WAVES FLAT.
FRI NIGHT
SE WINDS AROUND 5 KT. WAVES FLAT.
SAT
SE WINDS AROUND 5 KT. WAVES FLAT.
SUN
S WINDS 5 KT. WAVES LESS THAN 1 FT.
ANZ539-102300-
CHESTER RIVER TO QUEENSTOWN MD-
434 AM EDT WED SEP 10 2025
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON
REST OF THE OVERNIGHT
NE WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
2 FT. A CHANCE OF SHOWERS.
TODAY
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A
CHANCE OF SHOWERS.
TONIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT.
THU
N WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
N WINDS AROUND 5 KT. WAVES FLAT.
FRI
NE WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI NIGHT
SE WINDS 5 KT. WAVES FLAT.
SAT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
SUN
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
ANZ532-102300-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
434 AM EDT WED SEP 10 2025
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON
REST OF THE OVERNIGHT
NE WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
2 FT. A CHANCE OF SHOWERS.
TODAY
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 TO 3 FT. A
CHANCE OF SHOWERS. VSBY 1 TO 3 NM.
TONIGHT
N WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
THU
N WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
N WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI
NE WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
SAT...E WINDS 5 KT
BECOMING S. WAVES 1 FT OR LESS.
SUN
SW WINDS 5 TO 10 KT. WAVES 1 FT.
ANZ540-102300-
EASTERN BAY-
434 AM EDT WED SEP 10 2025
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON
REST OF THE OVERNIGHT
NE WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
2 FT. A CHANCE OF SHOWERS.
TODAY
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A
CHANCE OF SHOWERS. VSBY 1 TO 3 NM.
TONIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT.
THU
N WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
N WINDS AROUND 5 KT. WAVES FLAT.
FRI
NE WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI NIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
SAT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
SUN
SW WINDS 5 TO 10 KT. WAVES 1 FT.
ANZ533-102300-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
434 AM EDT WED SEP 10 2025
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON
REST OF THE OVERNIGHT
NE WINDS 20 KT WITH GUSTS TO 25 KT. WAVES
3 FT. A CHANCE OF SHOWERS.
TODAY
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT. A
CHANCE OF SHOWERS. VSBY 1 TO 3 NM.
TONIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
THU
N WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
THU NIGHT
N WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI
N WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT.
SAT...NE WINDS 5 KT
BECOMING S. WAVES 1 FT.
SUN
SW WINDS 5 TO 10 KT. WAVES 1 FT.
ANZ541-102300-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
434 AM EDT WED SEP 10 2025
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON
REST OF THE OVERNIGHT
NE WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
2 FT. A CHANCE OF SHOWERS.
TODAY
N WINDS 15 TO 20 KT. WAVES 2 FT. A CHANCE OF SHOWERS. VSBY
1 TO 3 NM.
TONIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
THU
N WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
NE WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
FRI
NE WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT.
SAT...NE WINDS 5 KT
BECOMING S. WAVES 1 FT.
SUN
SW WINDS 5 TO 10 KT. WAVES 1 FT.
ANZ542-102300-
PATUXENT RIVER TO BROOMES ISLAND MD-
434 AM EDT WED SEP 10 2025
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON
REST OF THE OVERNIGHT
N WINDS 10 KT WITH GUSTS TO 20 KT. WAVES
1 FT. A CHANCE OF SHOWERS.
TODAY
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A
CHANCE OF SHOWERS. VSBY 1 TO 3 NM.
TONIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT.
THU
N WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
N WINDS AROUND 5 KT. WAVES 1 FT.
FRI
NE WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI NIGHT
E WINDS 5 KT. WAVES LESS THAN 1 FT.
SAT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
SUN
S WINDS 5 KT. WAVES LESS THAN 1 FT.
ANZ534-102300-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
434 AM EDT WED SEP 10 2025
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON
REST OF THE OVERNIGHT
N WINDS 20 KT WITH GUSTS TO 25 KT. WAVES
3 FT. A CHANCE OF SHOWERS.
TODAY
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT. A
CHANCE OF SHOWERS. VSBY 1 TO 3 NM.
TONIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 TO 3 FT.
THU
N WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
THU NIGHT
NE WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI
NE WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT.
SAT...NE WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT.
SUN...W WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT.
ANZ543-102300-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
434 AM EDT WED SEP 10 2025
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON
REST OF THE OVERNIGHT
NE WINDS 15 KT WITH GUSTS TO 25 KT. WAVES
2 FT. A CHANCE OF SHOWERS. VSBY 1 TO 3 NM.
TODAY
N WINDS 15 TO 20 KT. WAVES 2 FT. A CHANCE OF SHOWERS. VSBY
1 TO 3 NM.
TONIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
THU
N WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
NE WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT.
SAT...NE WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT.
SUN...SW WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT.
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