209
FZUS51 KLWX 042100
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
500 PM 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.
ANZ500-050800-
500 PM EDT SAT APR 4 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
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.
ANZ535-050800-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
500 PM EDT SAT APR 4 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON
REST OF THIS AFTERNOON
S WINDS 10 KT. WAVES 1 FT.
TONIGHT...S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT
INCREASING TO
25 KT LATE. WAVES 1 TO 2 FT.
SUN...SW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT
BECOMING W 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. 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.
ANZ536-050800-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
500 PM EDT SAT APR 4 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON
REST OF THIS AFTERNOON
S WINDS 10 KT. WAVES 1 FT.
TONIGHT
S WINDS 15 TO 20 KT. GUSTS UP TO 25 KT LATE. WAVES 1 TO
2 FT.
SUN...SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT
BECOMING W 5 TO
10 KT LATE. 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.
ANZ537-050800-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
500 PM EDT SAT APR 4 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON
REST OF THIS AFTERNOON
S WINDS 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
BECOMING W 10 TO 15 KT LATE. GUSTS UP
TO 25 KT. WAVES 2 FT. SHOWERS WITH A CHANCE OF TSTMS.
SUN NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. A CHANCE OF SHOWERS.
MON...NW WINDS 10 TO 15 KT
BECOMING W 5 KT IN THE AFTERNOON.
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 2 FT.
WED...NE WINDS 10 TO 15 KT
BECOMING SE 5 TO 10 KT. WAVES 1 TO
2 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ530-050800-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
500 PM EDT SAT APR 4 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON
REST OF THIS AFTERNOON
SE WINDS 10 KT. WAVES 1 FT.
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 WITH GUSTS TO 25 KT
BECOMING W 10 TO
15 KT WITH GUSTS TO 20 KT IN THE AFTERNOON. 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 5 KT AFTER MIDNIGHT. WAVES
1 TO 2 FT.
WED
SE WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
ANZ531-050800-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
500 PM EDT SAT APR 4 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON
REST OF THIS AFTERNOON
SE WINDS 10 KT. WAVES 1 FT.
TONIGHT
SE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT. A
CHANCE OF SHOWERS.
SUN...S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT
BECOMING W 10 TO
15 KT WITH GUSTS TO 20 KT IN THE AFTERNOON. WAVES 2 TO 3 FT.
SHOWERS.
SUN NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
MON
W WINDS 10 KT. WAVES 1 FT.
MON NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
TUE...NW WINDS 15 TO 20 KT
BECOMING N 5 TO 10 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT.
WED...E WINDS 5 TO 10 KT
BECOMING SE. WAVES 1 FT.
ANZ538-050800-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
500 PM EDT SAT APR 4 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON
REST OF THIS AFTERNOON
SE WINDS 10 KT. WAVES 1 FT.
TONIGHT
SE WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A
CHANCE OF SHOWERS.
SUN...SW WINDS 10 TO 15 KT
BECOMING W IN THE AFTERNOON. GUSTS UP
TO 25 KT UNTIL LATE AFTERNOON. 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
W WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE...NW WINDS 10 TO 15 KT
BECOMING N 5 KT AFTER MIDNIGHT. WAVES
1 FT OR LESS.
WED
SE WINDS AROUND 5 KT. WAVES FLAT.
ANZ539-050800-
CHESTER RIVER TO QUEENSTOWN MD-
500 PM EDT SAT APR 4 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON
REST OF THIS AFTERNOON
S WINDS 10 KT. WAVES 1 FT.
TONIGHT...S WINDS 15 TO 20 KT. GUSTS UP TO 20 KT
INCREASING TO
25 KT LATE. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
SUN...S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT
BECOMING W 10 TO
15 KT WITH GUSTS TO 25 KT IN THE AFTERNOON. WAVES 2 FT. SHOWERS.
SUN NIGHT
NW WINDS 10 TO 15 KT. WAVES 2 FT.
MON
W WINDS 5 TO 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. WAVES 1 TO 2 FT.
WED...E WINDS 5 TO 10 KT
BECOMING SE. WAVES 1 FT OR LESS.
ANZ532-050800-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
500 PM EDT SAT APR 4 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON
REST OF THIS AFTERNOON
S WINDS 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.
A CHANCE OF SHOWERS.
SUN...S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT
BECOMING W 10 TO
15 KT WITH GUSTS TO 25 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
W WINDS 5 TO 10 KT. WAVES 1 FT.
MON NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
TUE...NW WINDS 15 TO 20 KT
BECOMING N 10 TO 15 KT AFTER MIDNIGHT.
WAVES 2 FT.
WED...NE WINDS 10 TO 15 KT
BECOMING SE 5 TO 10 KT. WAVES 1 TO
2 FT.
ANZ540-050800-
EASTERN BAY-
500 PM EDT SAT APR 4 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON
REST OF THIS AFTERNOON
S WINDS 10 KT. WAVES 1 FT.
TONIGHT...S WINDS 15 TO 20 KT. GUSTS UP TO 20 KT
INCREASING TO
25 KT LATE. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
SUN...SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT
BECOMING W 10 KT
LATE. 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 KT. WAVES 1 FT OR LESS.
ANZ533-050800-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
500 PM EDT SAT APR 4 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON
REST OF THIS AFTERNOON
S WINDS 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 15 TO 20 KT
BECOMING W 10 TO 15 KT LATE. GUSTS UP
TO 25 KT. 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
SW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE...NW WINDS 15 TO 20 KT
BECOMING N 10 TO 15 KT AFTER MIDNIGHT.
WAVES 2 TO 3 FT.
WED...NE WINDS 10 TO 15 KT
BECOMING SE 5 TO 10 KT. WAVES 1 TO
2 FT.
ANZ541-050800-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
500 PM EDT SAT APR 4 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON
REST OF THIS AFTERNOON
S WINDS 15 KT. WAVES 1 FT.
TONIGHT
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT. A
CHANCE OF SHOWERS.
SUN...SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT
BECOMING W 10 TO
15 KT LATE. WAVES 2 TO 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
SW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE...NW WINDS 15 TO 20 KT
BECOMING N 10 TO 15 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT.
WED...NE WINDS 10 TO 15 KT
BECOMING SE 5 TO 10 KT. WAVES 1 FT.
ANZ542-050800-
PATUXENT RIVER TO BROOMES ISLAND MD-
500 PM EDT SAT APR 4 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON
REST OF THIS AFTERNOON
S WINDS 10 KT. WAVES 1 FT.
TONIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT. WAVES 1 FT.
SUN...SW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT
BECOMING W 5 TO
10 KT LATE. 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
SW WINDS 5 KT. WAVES LESS THAN 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. WAVES 1 FT.
ANZ534-050800-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
500 PM EDT SAT APR 4 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON
REST OF THIS AFTERNOON
S WINDS 15 KT WITH GUSTS 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
BECOMING W 10 TO 15 KT LATE. GUSTS UP
TO 25 KT. WAVES 3 FT. SHOWERS WITH A CHANCE OF TSTMS.
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
SW WINDS 10 TO 15 KT. WAVES 1 FT.
TUE...NW WINDS 15 TO 20 KT
BECOMING N AFTER MIDNIGHT. WAVES 3 FT.
WED...NE WINDS 15 TO 20 KT...BECOMING SE 5 TO 10 KT. WAVES 3 FT
SUBSIDING TO 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ543-050800-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
500 PM EDT SAT APR 4 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON
REST OF THIS AFTERNOON
S WINDS 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...S WINDS 15 TO 20 KT
BECOMING SW 10 TO 15 KT LATE. GUSTS UP
TO 30 KT...DIMINISHING TO 20 KT LATE. 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 10 TO 15 KT. WAVES 1 FT.
TUE...NW WINDS 15 TO 20 KT
BECOMING N 10 TO 15 KT AFTER MIDNIGHT.
WAVES 2 FT.
WED...NE WINDS 10 TO 15 KT
BECOMING SE 5 TO 10 KT. WAVES 1 TO
2 FT.
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