955
FZUS51 KLWX 302358
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
758 PM EDT THU APR 30 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.
ANZ500-010800-
758 PM EDT THU APR 30 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
A TROUGH OF LOW PRESSURE WILL LINGER THROUGH THE REMAINDER OF THE
WEEK. A COASTAL LOW TRACKS OFF THE CAROLINAS ON SATURDAY BEFORE HIGH
PRESSURE BUILDS TO THE SOUTHWEST TO FINISH THE WEEKEND. ANOTHER
FRONTAL SYSTEM APPROACHES FROM THE WEST BY EARLY NEXT WEEK. SMALL
CRAFT ADVISORIES MAY BE NEEDED FRIDAY NIGHT, SATURDAY NIGHT INTO
SUNDAY, AND MONDAY THROUGH TUESDAY.
ANZ535-010800-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
758 PM EDT THU APR 30 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING
TONIGHT
NW WINDS 10 TO 15 KT. GUSTS UP TO 25 KT. WAVES 1 FT.
FRI...NW WINDS 5 TO 10 KT
BECOMING SW LATE. WAVES 1 FT.
FRI NIGHT...S WINDS 5 TO 10 KT
BECOMING N IN THE LATE EVENING AND
OVERNIGHT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SUN NIGHT
W WINDS AROUND 5 KT. WAVES 1 FT.
MON
SW WINDS 10 TO 15 KT. WAVES 1 FT.
TUE
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
ANZ536-010800-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
758 PM EDT THU APR 30 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING
TONIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
FRI...NW WINDS 5 TO 10 KT
BECOMING SW IN THE AFTERNOON. WAVES
1 FT.
FRI NIGHT...SE WINDS 5 TO 10 KT
BECOMING N AFTER MIDNIGHT. WAVES
1 FT. A CHANCE OF SHOWERS.
SAT
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT NIGHT...N WINDS 5 KT
BECOMING NW 10 TO 15 KT AFTER MIDNIGHT.
WAVES 1 FT. A CHANCE OF SHOWERS.
SUN
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SUN NIGHT...NW WINDS 5 TO 10 KT
BECOMING SW AFTER MIDNIGHT. WAVES
1 FT.
MON
SW WINDS 10 TO 15 KT. WAVES 1 FT.
TUE
S WINDS 15 TO 20 KT. WAVES 1 TO 2 FT.
ANZ537-010800-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
758 PM EDT THU APR 30 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT FRIDAY
TONIGHT
NW WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
FRI...NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
BECOMING SE 5 TO
10 KT IN THE AFTERNOON. WAVES 1 TO 2 FT.
FRI NIGHT...S WINDS 5 TO 10 KT
BECOMING NW LATE. WAVES 1 TO 2 FT.
A CHANCE OF SHOWERS.
SAT
N WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
SAT NIGHT
NW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT. WAVES 1 TO
2 FT. A CHANCE OF SHOWERS.
SUN
NW WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
SUN NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
MON
SW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
TUE
S WINDS 10 TO 15 KT. WAVES 2 FT.
ANZ530-010800-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
758 PM EDT THU APR 30 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING
TONIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
FRI...NW WINDS 5 TO 10 KT
BECOMING SW LATE. WAVES 1 FT.
FRI NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT NIGHT
NW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER MIDNIGHT.
WAVES 1 FT. A CHANCE OF SHOWERS.
SUN
NW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SUN NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
MON
SW WINDS 10 TO 15 KT. WAVES 1 FT.
TUE
S WINDS 15 TO 20 KT. WAVES 1 TO 2 FT.
ANZ531-010800-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
758 PM EDT THU APR 30 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT FRIDAY
TONIGHT
NW WINDS 15 KT. GUSTS UP TO 25 KT UNTIL EARLY MORNING.
WAVES 2 FT.
FRI...NW WINDS 5 TO 10 KT
BECOMING S IN THE AFTERNOON. WAVES
1 FT.
FRI NIGHT...SW WINDS 5 TO 10 KT
BECOMING NW LATE. WAVES 1 FT. A
CHANCE OF SHOWERS.
SAT
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT NIGHT
NW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
SUN
NW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SUN NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
MON
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
TUE
S WINDS 15 TO 20 KT. WAVES 2 TO 3 FT.
ANZ538-010800-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
758 PM EDT THU APR 30 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING
TONIGHT
NW WINDS 10 TO 15 KT. GUSTS UP TO 25 KT THIS EVENING.
WAVES 1 FT.
FRI...W WINDS 5 TO 10 KT
BECOMING S LATE. WAVES 1 FT.
FRI NIGHT...SW WINDS 5 TO 10 KT
BECOMING NW AFTER MIDNIGHT. WAVES
1 FT OR LESS. A CHANCE OF SHOWERS.
SAT
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT NIGHT
NW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER MIDNIGHT.
WAVES 1 FT OR LESS. A CHANCE OF SHOWERS.
SUN
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SUN NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
MON
S WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
ANZ539-010800-
CHESTER RIVER TO QUEENSTOWN MD-
758 PM EDT THU APR 30 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT FRIDAY
TONIGHT
NW WINDS 15 KT. GUSTS UP TO 25 KT UNTIL EARLY MORNING.
WAVES 2 FT.
FRI...NW WINDS 5 TO 10 KT
BECOMING SW IN THE AFTERNOON. WAVES
1 TO 2 FT.
FRI NIGHT...SW WINDS 5 TO 10 KT
BECOMING NW LATE. WAVES 1 FT. A
CHANCE OF SHOWERS.
SAT
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT NIGHT
NW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
SUN
NW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SUN NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
MON
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
TUE
S WINDS 15 TO 20 KT. WAVES 2 FT.
ANZ532-010800-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
758 PM EDT THU APR 30 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT FRIDAY
TONIGHT
NW WINDS 15 KT. GUSTS UP TO 25 KT UNTIL EARLY MORNING.
WAVES 2 FT.
FRI...NW WINDS 5 TO 10 KT
BECOMING SE IN THE AFTERNOON. WAVES
1 FT.
FRI NIGHT...S WINDS 10 KT
BECOMING NW AFTER MIDNIGHT. WAVES 1 FT.
A CHANCE OF SHOWERS.
SAT
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT NIGHT...NW WINDS 5 KT
INCREASING TO 10 TO 15 KT WITH GUSTS TO
20 KT AFTER MIDNIGHT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
SUN
NW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SUN NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
MON...S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT
BUILDING TO 3 FT AFTER
MIDNIGHT.
TUE
S WINDS 15 TO 20 KT. WAVES 2 TO 3 FT.
ANZ540-010800-
EASTERN BAY-
758 PM EDT THU APR 30 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT FRIDAY
TONIGHT
NW WINDS 15 KT. GUSTS UP TO 25 KT UNTIL EARLY MORNING.
WAVES 1 TO 2 FT.
FRI...NW WINDS 5 TO 10 KT
BECOMING SW IN THE AFTERNOON. WAVES
1 FT.
FRI NIGHT...SW WINDS 10 KT
BECOMING NW LATE. WAVES 1 FT. A CHANCE
OF SHOWERS.
SAT
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT NIGHT
NW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
SUN
NW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SUN NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
MON
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
TUE
S WINDS 15 TO 20 KT. WAVES 2 FT.
ANZ533-010800-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
758 PM EDT THU APR 30 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT FRIDAY
TONIGHT
NW WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
FRI...NW WINDS 10 TO 15 KT
BECOMING SE 5 TO 10 KT IN THE
AFTERNOON. WAVES 1 TO 2 FT.
FRI NIGHT...S WINDS 10 KT
BECOMING NW LATE. WAVES 1 FT. A CHANCE
OF SHOWERS.
SAT
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT NIGHT
NW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
SUN
NW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
SUN NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
MON...S WINDS 15 TO 20 KT. WAVES 1 TO 2 FT
BUILDING TO 3 FT AFTER
MIDNIGHT.
TUE
S WINDS 15 TO 20 KT. WAVES 2 TO 3 FT.
ANZ541-010800-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
758 PM EDT THU APR 30 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT FRIDAY
TONIGHT
NW WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
FRI...NW WINDS 10 TO 15 KT
BECOMING SW 5 TO 10 KT IN THE
AFTERNOON. WAVES 1 TO 2 FT.
FRI NIGHT...S WINDS 10 KT
BECOMING NW LATE. WAVES 1 FT. A CHANCE
OF SHOWERS.
SAT
N WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
SAT NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. A CHANCE OF SHOWERS.
SUN
NW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SUN NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
MON
S WINDS 15 TO 20 KT. WAVES 1 TO 2 FT.
TUE
S WINDS 15 TO 20 KT. WAVES 2 FT.
ANZ542-010800-
PATUXENT RIVER TO BROOMES ISLAND MD-
758 PM EDT THU APR 30 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING
TONIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
FRI...NW WINDS 5 TO 10 KT
BECOMING SE IN THE AFTERNOON. WAVES
1 FT.
FRI NIGHT...S WINDS 5 TO 10 KT
BECOMING NW LATE. WAVES 1 FT. A
CHANCE OF SHOWERS.
SAT
N WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
SAT NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A
CHANCE OF SHOWERS.
SUN
NW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT.
SUN NIGHT
W WINDS AROUND 5 KT. WAVES 1 FT.
MON
S WINDS 10 TO 15 KT. WAVES 1 FT.
TUE
S WINDS 10 TO 15 KT. WAVES 1 FT.
ANZ534-010800-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
758 PM EDT THU APR 30 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY MORNING
TONIGHT
NW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO
3 FT.
FRI...NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
DIMINISHING TO
5 KT EARLY IN THE AFTERNOON, THEN BECOMING S LATE. WAVES 3 FT...
SUBSIDING TO 1 FT IN THE AFTERNOON.
FRI NIGHT...S WINDS 10 TO 15 KT
BECOMING NW LATE. GUSTS UP TO
20 KT. WAVES 2 FT. A CHANCE OF SHOWERS.
SAT
N WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 2 FT. SHOWERS
LIKELY.
SAT NIGHT
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO
3 FT. A CHANCE OF SHOWERS.
SUN
NW WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 4 FT.
SUN NIGHT
W WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
MON
S WINDS 15 TO 20 KT. WAVES 2 TO 3 FT.
TUE
S WINDS 15 TO 20 KT. WAVES 3 FT.
ANZ543-010800-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
758 PM EDT THU APR 30 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY MORNING
TONIGHT
NW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 1 TO
2 FT.
FRI...NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
BECOMING SW 5 TO
10 KT IN THE AFTERNOON. WAVES 1 TO 2 FT.
FRI NIGHT...S WINDS 10 TO 15 KT
BECOMING W LATE. GUSTS UP TO
20 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
SAT
N WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. SHOWERS
LIKELY.
SAT NIGHT
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 1 TO
2 FT. A CHANCE OF SHOWERS.
SUN
NW WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 FT.
SUN NIGHT
W WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE EVENING.
WAVES 1 FT.
MON
S WINDS 15 TO 20 KT. WAVES 1 TO 2 FT.
TUE
S WINDS 15 TO 20 KT. WAVES 2 FT.
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