321
FZUS51 KLWX 090859
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
458 AM EDT THU APR 9 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.
ANZ500-092300-
458 AM EDT THU APR 9 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
HIGH PRESSURE WILL PROGRESS OFFSHORE ON TODAY. A COLD FRONT MAY
CROSS THE WATERS EARLY SATURDAY BEFORE THE BOUNDARY DISSIPATES TO
OUR SOUTH. HIGH PRESSURE WILL BUILD QUICKLY NORTH AND EAST OF THE
AREA SUNDAY AND MONDAY. SMALL CRAFT ADVISORIES MAY BE NEEDED FOR
PORTIONS OF THE WATERS LATE FRIDAY AND SATURDAY.
ANZ535-092300-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
458 AM EDT THU APR 9 2026
REST OF THE OVERNIGHT
E WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
SE WINDS AROUND 5 KT. WAVES 1 FT.
TONIGHT
S WINDS AROUND 5 KT. WAVES 1 FT.
FRI
S WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
N WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT
E WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
SUN
SE WINDS 5 TO 10 KT. WAVES 1 FT.
MON
SW WINDS 5 TO 10 KT. WAVES 1 FT.
ANZ536-092300-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
458 AM EDT THU APR 9 2026
REST OF THE OVERNIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
SE WINDS AROUND 5 KT. WAVES 1 FT.
TONIGHT
SE WINDS AROUND 5 KT. WAVES 1 FT.
FRI
S WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
N WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT
E WINDS AROUND 5 KT. WAVES 1 FT.
SUN
SE WINDS 10 TO 15 KT. WAVES 1 FT.
MON
SW WINDS 10 TO 15 KT. WAVES 1 FT.
ANZ537-092300-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
458 AM EDT THU APR 9 2026
REST OF THE OVERNIGHT
E WINDS 10 KT. WAVES 1 FT.
TODAY
E WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
FRI NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
N WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT.
SUN...SE WINDS 10 TO 15 KT
BECOMING S AFTER MIDNIGHT. WAVES 1 TO
2 FT.
MON
SW WINDS 10 TO 15 KT. WAVES 2 FT.
ANZ530-092300-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
458 AM EDT THU APR 9 2026
REST OF THE OVERNIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
S WINDS AROUND 5 KT. WAVES 1 FT.
TONIGHT
S WINDS AROUND 5 KT. WAVES 1 FT.
FRI
S WINDS 5 TO 10 KT. WAVES 1 FT. PATCHY FOG.
FRI NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
N WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT
NE WINDS AROUND 5 KT. WAVES 1 FT.
SUN
SE WINDS 5 TO 10 KT. WAVES 1 FT.
MON
SW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
ANZ531-092300-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
458 AM EDT THU APR 9 2026
REST OF THE OVERNIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
S WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. PATCHY FOG.
FRI NIGHT...S WINDS 10 TO 15 KT
BECOMING SW 5 TO 10 KT AFTER
MIDNIGHT. WAVES 1 TO 2 FT.
SAT
N WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT
NE WINDS 5 KT. WAVES LESS THAN 1 FT.
SUN...E WINDS 5 KT
BECOMING S 10 TO 15 KT. WAVES 1 TO 2 FT.
MON
SW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
ANZ538-092300-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
458 AM EDT THU APR 9 2026
REST OF THE OVERNIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
SE WINDS AROUND 5 KT. WAVES FLAT.
TONIGHT
S WINDS AROUND 5 KT. WAVES FLAT.
FRI
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
FRI NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
N WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT
NE WINDS 5 KT. WAVES LESS THAN 1 FT.
SUN
SE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
MON
SW WINDS 5 TO 10 KT. WAVES 1 FT.
ANZ539-092300-
CHESTER RIVER TO QUEENSTOWN MD-
458 AM EDT THU APR 9 2026
REST OF THE OVERNIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
S WINDS AROUND 5 KT. WAVES FLAT.
TONIGHT
S WINDS 5 KT. WAVES FLAT.
FRI
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. PATCHY FOG.
FRI NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
N WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT
NE WINDS 5 KT. WAVES LESS THAN 1 FT.
SUN...SE WINDS 10 TO 15 KT
BECOMING S AFTER MIDNIGHT. WAVES 1 FT
OR LESS...BUILDING TO 2 FT AFTER MIDNIGHT.
MON
SW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
ANZ532-092300-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
458 AM EDT THU APR 9 2026
REST OF THE OVERNIGHT
SE WINDS 10 KT. WAVES 1 FT.
TODAY
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
FRI...S WINDS 5 KT
INCREASING TO 10 TO 15 KT IN THE AFTERNOON.
WAVES FLAT...BUILDING TO 2 FT IN THE AFTERNOON. PATCHY FOG.
FRI NIGHT...S WINDS 10 TO 15 KT
BECOMING SW AFTER MIDNIGHT. WAVES
2 FT.
SAT
N WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
SUN...SE WINDS 10 TO 15 KT
BECOMING S. WAVES 1 TO 2 FT.
MON
SW WINDS 15 TO 20 KT. WAVES 2 FT.
ANZ540-092300-
EASTERN BAY-
458 AM EDT THU APR 9 2026
REST OF THE OVERNIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
S WINDS AROUND 5 KT. WAVES FLAT.
TONIGHT
S WINDS 5 KT. WAVES FLAT.
FRI
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. PATCHY FOG.
FRI NIGHT...S WINDS 10 TO 15 KT
BECOMING SW 5 TO 10 KT AFTER
MIDNIGHT. WAVES 1 FT.
SAT
N WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT
NE WINDS 5 KT. WAVES LESS THAN 1 FT.
SUN...SE WINDS 10 TO 15 KT
BECOMING S AFTER MIDNIGHT. WAVES 1 FT
OR LESS...BUILDING TO 2 FT AFTER MIDNIGHT.
MON
SW WINDS 10 TO 15 KT. WAVES 2 FT.
ANZ533-092300-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
458 AM EDT THU APR 9 2026
REST OF THE OVERNIGHT
SE WINDS 10 KT. WAVES 1 FT.
TODAY
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
FRI...S WINDS 5 KT
INCREASING TO 10 TO 15 KT IN THE AFTERNOON.
WAVES FLAT...BUILDING TO 2 FT IN THE AFTERNOON.
FRI NIGHT...S WINDS 10 TO 15 KT
BECOMING SW AFTER MIDNIGHT. WAVES
2 FT.
SAT
N WINDS 10 TO 15 KT. WAVES 2 FT.
SAT NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT.
SUN...SE WINDS 10 TO 15 KT
BECOMING S AFTER MIDNIGHT. WAVES 1 TO
2 FT.
MON
SW WINDS 15 TO 20 KT. WAVES 2 FT.
ANZ541-092300-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
458 AM EDT THU APR 9 2026
REST OF THE OVERNIGHT
E WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
S WINDS AROUND 5 KT. WAVES 1 FT.
FRI
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
FRI NIGHT...S WINDS 10 TO 15 KT
BECOMING SW AFTER MIDNIGHT. WAVES
1 FT.
SAT
N WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT
NE WINDS 5 KT. WAVES LESS THAN 1 FT.
SUN...SE WINDS 10 TO 15 KT
BECOMING S. WAVES 1 TO 2 FT.
MON
SW WINDS 15 TO 20 KT. WAVES 2 FT.
ANZ542-092300-
PATUXENT RIVER TO BROOMES ISLAND MD-
458 AM EDT THU APR 9 2026
REST OF THE OVERNIGHT
E WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
SE WINDS AROUND 5 KT. WAVES 1 FT.
FRI
S WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
N WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT
E WINDS AROUND 5 KT. WAVES 1 FT.
SUN...SE WINDS 5 KT
BECOMING S 10 TO 15 KT. WAVES 1 FT.
MON
SW WINDS 10 TO 15 KT. WAVES 1 FT.
ANZ534-092300-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
458 AM EDT THU APR 9 2026
REST OF THE OVERNIGHT
E WINDS 10 KT. WAVES 1 FT.
TODAY
E WINDS 5 TO 10 KT. WAVES 1 FT.
TONIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
FRI NIGHT...S WINDS 10 TO 15 KT
BECOMING SW AFTER MIDNIGHT. WAVES
2 FT.
SAT
N WINDS 10 TO 15 KT. WAVES 2 FT.
SAT NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT.
SUN...SE WINDS 10 TO 15 KT
BECOMING S 15 TO 20 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT...BUILDING TO 3 FT AFTER MIDNIGHT.
MON
SW WINDS 15 TO 20 KT. WAVES 3 FT.
ANZ543-092300-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
458 AM EDT THU APR 9 2026
REST OF THE OVERNIGHT
E WINDS 10 KT. WAVES 1 FT.
TODAY
SE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TONIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
FRI
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. PATCHY DENSE FOG.
FRI NIGHT
S WINDS 10 TO 15 KT. WAVES 1 FT.
SAT
NW WINDS 10 KT. WAVES 1 FT.
SAT NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
SUN...SE WINDS 10 TO 15 KT
BECOMING S AFTER MIDNIGHT. WAVES 1 TO
2 FT.
MON
SW WINDS 15 TO 20 KT. WAVES 2 FT.
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