398
FZUS51 KLWX 040859
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
458 AM EDT SAT APR 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.
ANZ500-042300-
458 AM EDT SAT APR 4 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
LOW PRESSURE TRACKS THROUGH THE GREAT LAKES TODAY. A STRONG COLD
FRONT WILL MOVE OVER THE WATERS ON SUNDAY. SMALL CRAFT ADVISORIES
MAY BE NEEDED SUNDAY AFTERNOON INTO SUNDAY NIGHT, AND THEN
POTENTIALLY AGAIN ON TUESDAY.
ANZ535-042300-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
458 AM EDT SAT APR 4 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM EDT THIS AFTERNOON
THROUGH SUNDAY AFTERNOON...
REST OF THE OVERNIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
SW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
WAVES 1 FT.
TONIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 TO 2 FT.
SUN...SW WINDS 10 TO 15 KT WITH GUSTS TO 30 KT
BECOMING W 5 TO
10 KT WITH GUSTS TO 20 KT IN THE AFTERNOON. WAVES 1 TO 2 FT.
SHOWERS.
SUN NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
MON
NW WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
MON NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE...NW WINDS 10 TO 15 KT
BECOMING N 5 KT AFTER MIDNIGHT. WAVES
1 FT.
WED
SE WINDS AROUND 5 KT. WAVES 1 FT.
ANZ536-042300-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
458 AM EDT SAT APR 4 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM EDT THIS AFTERNOON
THROUGH SUNDAY AFTERNOON...
REST OF THE OVERNIGHT
SW WINDS 10 KT. WAVES 1 FT.
TODAY
SW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT LATE. WAVES 1 FT.
TONIGHT
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 1 TO 2 FT.
SUN...SW WINDS 15 TO 20 KT
BECOMING W 10 TO 15 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. WAVES 1 TO 2 FT. SHOWERS.
SUN NIGHT
NW WINDS 10 TO 15 KT. WAVES 1 FT.
MON
NW WINDS 5 TO 10 KT. WAVES 1 FT.
MON NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE...NW WINDS 10 TO 15 KT
BECOMING N 5 TO 10 KT AFTER MIDNIGHT.
WAVES 1 FT.
WED...E WINDS 5 TO 10 KT
BECOMING SE AFTER MIDNIGHT. WAVES 1 FT.
ANZ537-042300-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
458 AM EDT SAT APR 4 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM EDT THIS AFTERNOON
THROUGH SUNDAY AFTERNOON...
REST OF THE OVERNIGHT
SW WINDS 10 KT. WAVES 2 FT.
TODAY
SW WINDS 5 TO 10 KT. WAVES 1 FT.
TONIGHT
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SUN
SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SHOWERS.
SUN NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT.
MON
NW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE MORNING. WAVES
1 TO 2 FT.
MON NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
TUE...NW WINDS 10 TO 15 KT
BECOMING N AFTER MIDNIGHT. WAVES 2 FT.
WED...NE WINDS 10 TO 15 KT
BECOMING SE 5 TO 10 KT. WAVES 1 TO
2 FT.
ANZ530-042300-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
458 AM EDT SAT APR 4 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM EDT THIS AFTERNOON
THROUGH SUNDAY AFTERNOON...
REST OF THE OVERNIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF
SHOWERS.
TONIGHT...SE WINDS 10 TO 15 KT
BECOMING S LATE. GUSTS UP TO
20 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN...SW WINDS 15 TO 20 KT
BECOMING W 10 TO 15 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. WAVES 2 FT. SHOWERS.
SUN NIGHT
NW WINDS 10 TO 15 KT. WAVES 1 FT.
MON
W WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
MON NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
TUE...NW WINDS 10 TO 15 KT
BECOMING N 5 TO 10 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT.
WED...SE WINDS 5 TO 10 KT
DIMINISHING TO AROUND 5 KT AFTER
MIDNIGHT. WAVES 1 FT OR LESS.
ANZ531-042300-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
458 AM EDT SAT APR 4 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM EDT THIS AFTERNOON
THROUGH SUNDAY AFTERNOON...
REST OF THE OVERNIGHT
S WINDS 10 KT. WAVES 1 FT.
TODAY
S WINDS 5 TO 10 KT. WAVES 1 FT.
TONIGHT
SE WINDS 15 TO 20 KT. WAVES 2 FT.
SUN...SW WINDS 15 TO 20 KT
BECOMING W 10 TO 15 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. WAVES 2 TO 3 FT. SHOWERS.
SUN NIGHT
NW WINDS 10 TO 15 KT. WAVES 2 FT.
MON
W WINDS 10 KT. WAVES 1 FT.
MON NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE...NW WINDS 10 TO 15 KT
BECOMING N AFTER MIDNIGHT. WAVES 1 TO
2 FT.
WED...NE WINDS 10 TO 15 KT
BECOMING SE 5 TO 10 KT. WAVES 1 FT.
ANZ538-042300-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
458 AM EDT SAT APR 4 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM EDT THIS AFTERNOON
THROUGH SUNDAY AFTERNOON...
REST OF THE OVERNIGHT
SW WINDS 5 KT. WAVES FLAT.
TODAY
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TONIGHT
SE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SUN...SW WINDS 10 TO 15 KT
BECOMING W IN THE AFTERNOON. GUSTS UP
TO 20 KT. WAVES 1 FT. SHOWERS.
SUN NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
MON
W WINDS 5 TO 10 KT. WAVES 1 FT.
MON NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TUE...NW WINDS 10 TO 15 KT
BECOMING N 5 TO 10 KT. WAVES 1 FT.
WED
SE WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
ANZ539-042300-
CHESTER RIVER TO QUEENSTOWN MD-
458 AM EDT SAT APR 4 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM EDT THIS AFTERNOON
THROUGH SUNDAY AFTERNOON...
REST OF THE OVERNIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
S WINDS 5 TO 10 KT. WAVES 1 FT.
TONIGHT
S WINDS 15 TO 20 KT. WAVES 1 TO 2 FT.
SUN...SW WINDS 15 TO 20 KT
BECOMING W 10 TO 15 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. WAVES 2 FT. SHOWERS.
SUN NIGHT
NW WINDS 10 TO 15 KT. WAVES 2 FT.
MON
W WINDS 10 KT. WAVES 1 TO 2 FT.
MON NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
TUE...NW WINDS 10 TO 15 KT
BECOMING N AFTER MIDNIGHT. WAVES 1 TO
2 FT.
WED...E WINDS 5 TO 10 KT
BECOMING SE. WAVES 1 FT OR LESS.
ANZ532-042300-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
458 AM EDT SAT APR 4 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM EDT THIS AFTERNOON
THROUGH SUNDAY AFTERNOON...
REST OF THE OVERNIGHT
SW WINDS 10 KT. WAVES 2 FT.
TODAY
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
TONIGHT
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO 3 FT.
SUN...SW WINDS 15 TO 20 KT
BECOMING W 10 TO 15 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. WAVES 2 TO 3 FT. SHOWERS.
SUN NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT.
MON
W WINDS 10 TO 15 KT. WAVES 1 FT.
MON NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
TUE...NW WINDS 10 TO 15 KT
BECOMING N AFTER MIDNIGHT. WAVES 2 FT.
WED...NE WINDS 10 TO 15 KT
BECOMING SE 5 TO 10 KT. WAVES 1 TO
2 FT.
ANZ540-042300-
EASTERN BAY-
458 AM EDT SAT APR 4 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM EDT THIS AFTERNOON
THROUGH SUNDAY AFTERNOON...
REST OF THE OVERNIGHT
SW WINDS 10 KT. WAVES 1 FT.
TODAY
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT LATE. WAVES 1 FT.
TONIGHT
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 1 TO 2 FT.
SUN...S WINDS 15 TO 20 KT
BECOMING W 10 TO 15 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. WAVES 2 FT. SHOWERS.
SUN NIGHT
NW WINDS 10 TO 15 KT. WAVES 1 FT.
MON
W WINDS 5 TO 10 KT. WAVES 1 FT.
MON NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
TUE...NW WINDS 10 TO 15 KT
BECOMING N AFTER MIDNIGHT. WAVES 1 TO
2 FT.
WED...NE WINDS 10 TO 15 KT
BECOMING SE 5 TO 10 KT. WAVES 1 FT.
ANZ533-042300-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
458 AM EDT SAT APR 4 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM EDT THIS AFTERNOON
THROUGH SUNDAY AFTERNOON...
REST OF THE OVERNIGHT
SW WINDS 10 KT WITH GUSTS TO 20 KT. WAVES
2 FT.
TODAY
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
TONIGHT
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO 3 FT.
SUN...SW WINDS 20 TO 25 KT
BECOMING W 10 TO 15 KT IN THE
AFTERNOON. WAVES 3 FT. SHOWERS.
SUN NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
MON
NW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
MON NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
TUE...NW WINDS 10 TO 15 KT
BECOMING N 15 TO 20 KT AFTER MIDNIGHT.
WAVES 2 FT.
WED...NE WINDS 10 TO 15 KT
BECOMING SE 5 TO 10 KT. WAVES 1 TO
2 FT.
ANZ541-042300-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
458 AM EDT SAT APR 4 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM EDT THIS AFTERNOON
THROUGH SUNDAY AFTERNOON...
REST OF THE OVERNIGHT
SW WINDS 10 KT WITH GUSTS TO 20 KT. WAVES
2 FT.
TODAY
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT LATE. WAVES 1 FT.
TONIGHT
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SUN...S WINDS 20 TO 25 KT
BECOMING W 10 TO 15 KT IN THE
AFTERNOON. WAVES 2 TO 3 FT. SHOWERS.
SUN NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT.
MON
NW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
MON NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
TUE...NW WINDS 10 TO 15 KT
BECOMING N AFTER MIDNIGHT. WAVES 1 TO
2 FT.
WED...NE WINDS 10 TO 15 KT
BECOMING SE 5 TO 10 KT. WAVES 1 FT.
ANZ542-042300-
PATUXENT RIVER TO BROOMES ISLAND MD-
458 AM EDT SAT APR 4 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM EDT THIS AFTERNOON
THROUGH SUNDAY AFTERNOON...
REST OF THE OVERNIGHT
SW WINDS 10 KT. WAVES 1 FT.
TODAY
SW WINDS 5 TO 10 KT. WAVES 1 FT.
TONIGHT
S WINDS 15 TO 20 KT. WAVES 1 FT.
SUN...SW WINDS 15 TO 20 KT
BECOMING W 10 TO 15 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. WAVES 1 FT. SHOWERS.
SUN NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
MON
NW WINDS 5 TO 10 KT. WAVES 1 FT.
MON NIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE...NW WINDS 10 TO 15 KT
BECOMING N AFTER MIDNIGHT. WAVES 1 FT.
WED...E WINDS 5 TO 10 KT
BECOMING SE. WAVES 1 FT.
ANZ534-042300-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
458 AM EDT SAT APR 4 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM EDT THIS AFTERNOON
THROUGH SUNDAY AFTERNOON...
REST OF THE OVERNIGHT
SW WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
2 FT.
TODAY
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT. WAVES 2 FT.
TONIGHT
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
SUN
SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
SHOWERS.
SUN NIGHT
NW WINDS 15 TO 20 KT. WAVES 2 TO 3 FT. A CHANCE OF
SHOWERS.
MON...NW WINDS 15 TO 20 KT
BECOMING W 5 TO 10 KT IN THE
AFTERNOON. WAVES 3 FT...SUBSIDING TO 1 FT IN THE AFTERNOON.
MON NIGHT...S WINDS 5 TO 10 KT
BECOMING W AFTER MIDNIGHT. WAVES
1 FT.
TUE...NW WINDS 15 TO 20 KT
BECOMING N AFTER MIDNIGHT. WAVES 2 TO
3 FT.
WED...NE WINDS 15 TO 20 KT...BECOMING SE 5 TO 10 KT. WAVES 3 FT
SUBSIDING TO 1 FT.
ANZ543-042300-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
458 AM EDT SAT APR 4 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM EDT THIS AFTERNOON
THROUGH SUNDAY AFTERNOON...
REST OF THE OVERNIGHT
SW WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
2 FT.
TODAY
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
TONIGHT
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SUN
SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SHOWERS.
SUN NIGHT
NW WINDS 15 TO 20 KT. WAVES 1 TO 2 FT. A CHANCE OF
SHOWERS.
MON...NW WINDS 10 TO 15 KT
BECOMING W 5 TO 10 KT IN THE
AFTERNOON. GUSTS UP TO 20 KT. WAVES 1 TO 2 FT.
MON NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE...NW WINDS 10 TO 15 KT
BECOMING N AFTER MIDNIGHT. WAVES 1 TO
2 FT.
WED...NE WINDS 10 TO 15 KT
BECOMING SE 5 TO 10 KT. WAVES 1 TO
2 FT.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page