576
FZUS51 KLWX 210534
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
134 AM EDT TUE OCT 21 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.
ANZ500-212000-
134 AM EDT TUE OCT 21 2025
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
HIGH PRESSURE WILL BUILD SOUTH OF THE AREA THROUGH THIS MORNING. A
COLD FRONT WILL PUSH THROUGH TONIGHT. BEHIND THE FRONT, LOW PRESSURE
REMAINS ACROSS EASTERN CANADA AND HIGH PRESSURE BUILDS ACROSS THE
PLAINS THROUGH FRIDAY. SMALL CRAFT ADVISORIES WILL LIKELY BE NEEDED
WEDNESDAY THROUGH THURSDAY.
ANZ535-212000-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
134 AM EDT TUE OCT 21 2025
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH THIS EVENING...
OVERNIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
TUE NIGHT
SW WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A
CHANCE OF SHOWERS.
WED
W WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT.
WED NIGHT
W WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE EVENING.
WAVES 1 FT.
THU
W WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
THU NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
N WINDS AROUND 5 KT. WAVES 1 FT.
ANZ536-212000-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
134 AM EDT TUE OCT 21 2025
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH THIS EVENING...
OVERNIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
TUE NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED
W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
WED NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
THU
W WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
THU NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
NE WINDS AROUND 5 KT. WAVES 1 FT.
ANZ537-212000-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
134 AM EDT TUE OCT 21 2025
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
OVERNIGHT
SW WINDS 5 KT. WAVES FLAT.
TUE
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
TUE NIGHT...SW WINDS 10 TO 15 KT
BECOMING W LATE. GUSTS UP TO
20 KT. WAVES 2 FT. A CHANCE OF SHOWERS.
WED
W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
WED NIGHT
W WINDS 10 KT. WAVES 1 FT.
THU
W WINDS 10 KT. WAVES 1 FT.
THU NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
NE WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
ANZ530-212000-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
134 AM EDT TUE OCT 21 2025
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH THIS EVENING...
OVERNIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE...SW WINDS 5 KT
BECOMING S 10 TO 15 KT WITH GUSTS TO 20 KT IN
THE LATE MORNING AND AFTERNOON. WAVES 1 FT.
TUE NIGHT
SW WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A
CHANCE OF SHOWERS. VSBY 1 TO 3 NM.
WED
W WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
WED NIGHT
W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
THU
W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
THU NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
NW WINDS AROUND 5 KT. WAVES 1 FT.
ANZ531-212000-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
134 AM EDT TUE OCT 21 2025
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
OVERNIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE...SW WINDS 5 KT
BECOMING S 15 TO 20 KT IN THE LATE MORNING
AND AFTERNOON. WAVES 2 FT.
TUE NIGHT...SW WINDS 10 TO 15 KT
BECOMING W LATE. GUSTS UP TO
20 KT. WAVES 2 FT. A CHANCE OF SHOWERS.
WED
W WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
WED NIGHT
W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT.
THU
W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
THU NIGHT
W WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
N WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
ANZ538-212000-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
134 AM EDT TUE OCT 21 2025
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
OVERNIGHT
W WINDS 5 KT. WAVES FLAT.
TUE
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
TUE NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WED
W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
WED NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
THU
W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
THU NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
SAT
N WINDS AROUND 5 KT. WAVES FLAT.
ANZ539-212000-
CHESTER RIVER TO QUEENSTOWN MD-
134 AM EDT TUE OCT 21 2025
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
OVERNIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE...SW WINDS 5 KT
BECOMING S 10 TO 15 KT WITH GUSTS TO 20 KT IN
THE LATE MORNING AND AFTERNOON. WAVES 1 TO 2 FT.
TUE NIGHT
SW WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A
CHANCE OF SHOWERS.
WED
W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
WED NIGHT
W WINDS 10 KT. WAVES 1 TO 2 FT.
THU
W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
THU NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
N WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
ANZ532-212000-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
134 AM EDT TUE OCT 21 2025
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
OVERNIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE
S WINDS 15 TO 20 KT. WAVES 2 TO 3 FT.
TUE NIGHT...S WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. GUSTS
UP TO 25 KT. WAVES 2 TO 3 FT. A CHANCE OF SHOWERS.
WED
W WINDS 15 TO 20 KT. WAVES 2 FT.
WED NIGHT
W WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
THU
W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
THU NIGHT
NW WINDS 10 KT. WAVES 1 FT.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SAT...N WINDS 5 TO 10 KT
BECOMING E. WAVES 1 FT OR LESS.
ANZ540-212000-
EASTERN BAY-
134 AM EDT TUE OCT 21 2025
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
OVERNIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE...SW WINDS 5 KT
BECOMING S 10 TO 15 KT WITH GUSTS TO 20 KT IN
THE LATE MORNING AND AFTERNOON. WAVES 1 TO 2 FT.
TUE NIGHT...S WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. GUSTS
UP TO 20 KT. WAVES 2 FT. A CHANCE OF SHOWERS.
WED
W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
WED NIGHT
W WINDS 10 KT. WAVES 1 FT.
THU
W WINDS 10 TO 15 KT. WAVES 1 FT.
THU NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
NE WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
ANZ533-212000-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
134 AM EDT TUE OCT 21 2025
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
OVERNIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE
S WINDS 15 TO 20 KT. WAVES 2 TO 3 FT.
TUE NIGHT...S WINDS 15 TO 20 KT
BECOMING SW 10 TO 15 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. WAVES 2 TO 3 FT. A CHANCE OF SHOWERS.
WED
W WINDS 15 TO 20 KT. WAVES 2 FT.
WED NIGHT
W WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
THU
W WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
THU NIGHT
NW WINDS 10 KT. WAVES 1 FT.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SAT...N WINDS 5 TO 10 KT
BECOMING E AFTER MIDNIGHT. WAVES 1 FT OR
LESS.
ANZ541-212000-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
134 AM EDT TUE OCT 21 2025
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
OVERNIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE
S WINDS 15 TO 20 KT. WAVES 2 FT.
TUE NIGHT...S WINDS 10 TO 15 KT
BECOMING SW AFTER MIDNIGHT. GUSTS
UP TO 20 KT. WAVES 2 FT. A CHANCE OF SHOWERS.
WED
W WINDS 15 TO 20 KT. WAVES 2 FT.
WED NIGHT
W WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
THU
W WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
THU NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
NE WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
ANZ542-212000-
PATUXENT RIVER TO BROOMES ISLAND MD-
134 AM EDT TUE OCT 21 2025
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
OVERNIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
TUE NIGHT
SW WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A
CHANCE OF SHOWERS.
WED
W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
WED NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
THU
W WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
NE WINDS AROUND 5 KT. WAVES 1 FT.
ANZ534-212000-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
134 AM EDT TUE OCT 21 2025
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
OVERNIGHT
W WINDS 10 KT. WAVES 1 FT.
TUE
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO 3 FT.
TUE NIGHT...SW WINDS 15 TO 20 KT
BECOMING W LATE. WAVES 3 FT. A
CHANCE OF SHOWERS.
WED
W WINDS 15 TO 20 KT. WAVES 2 TO 3 FT.
WED NIGHT
W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
THU
W WINDS 10 TO 15 KT. WAVES 2 FT.
THU NIGHT
NW WINDS 10 TO 15 KT. WAVES 2 FT.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
ANZ543-212000-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
134 AM EDT TUE OCT 21 2025
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
OVERNIGHT
W WINDS 10 KT. WAVES 1 FT.
TUE
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
TUE NIGHT...SW WINDS 15 TO 20 KT
DIMINISHING TO 10 TO 15 KT LATE.
GUSTS UP TO 25 KT. WAVES 2 FT. A CHANCE OF SHOWERS.
WED
W WINDS 15 TO 20 KT. WAVES 2 FT.
WED NIGHT
W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
THU
W WINDS 10 TO 15 KT. WAVES 1 FT.
THU NIGHT
NW WINDS 10 TO 15 KT. WAVES 1 FT.
FRI...NW WINDS 10 TO 15 KT
BECOMING N 5 TO 10 KT AFTER MIDNIGHT.
WAVES 1 FT.
SAT
N WINDS 5 TO 10 KT. WAVES 1 FT.
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