670
FZUS51 KLWX 092334
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
734 PM EDT TUE SEP 9 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.
ANZ500-100800-
734 PM EDT TUE SEP 9 2025
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
CANADIAN HIGH PRESSURE WILL SETTLE TO THE NORTH OF THE AREA THROUGH
THE MIDDLE OF THE WEEK AS A WAVE OF LOW PRESSURE PASSES OFFSHORE OF
THE CAROLINAS. A COLD FRONT WILL DISSIPATE AS IT APPROACHES THURSDAY
WHILE ANOTHER AREA OF HIGH PRESSURE BUILDS TO THE NORTH LATE IN THE
WEEK. SMALL CRAFT ADVISORIES MAY BE NEEDED FOR PORTIONS OF THE
WATERS WEDNESDAY NIGHT.
ANZ535-100800-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
734 PM EDT TUE SEP 9 2025
TONIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS
AFTER MIDNIGHT.
WED
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WED NIGHT
N WINDS AROUND 5 KT. WAVES 1 FT.
THU
N WINDS 5 KT. WAVES LESS THAN 1 FT.
THU NIGHT
N WINDS AROUND 5 KT. WAVES 1 FT.
FRI
NE WINDS AROUND 5 KT. WAVES 1 FT.
FRI NIGHT
E WINDS AROUND 5 KT. WAVES 1 FT.
SAT
SE WINDS AROUND 5 KT. WAVES 1 FT.
SUN
SW WINDS AROUND 5 KT. WAVES 1 FT.
ANZ536-100800-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
734 PM EDT TUE SEP 9 2025
TONIGHT
NE WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A SLIGHT
CHANCE OF SHOWERS THIS EVENING, THEN A CHANCE OF SHOWERS AFTER
MIDNIGHT.
WED
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WED NIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT.
THU
N WINDS 5 KT. WAVES LESS THAN 1 FT.
THU NIGHT
N WINDS AROUND 5 KT. WAVES 1 FT.
FRI
NE WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI NIGHT
E WINDS 5 KT. WAVES LESS THAN 1 FT.
SAT
E WINDS 5 KT. WAVES LESS THAN 1 FT.
SUN
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
ANZ537-100800-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
734 PM EDT TUE SEP 9 2025
..SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON
TONIGHT
NE WINDS 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO 3 FT. A
CHANCE OF SHOWERS.
WED
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A CHANCE
OF SHOWERS. PATCHY FOG.
WED NIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT.
THU
N WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
NE WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI
NE WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT.
SAT...E WINDS 5 TO 10 KT
BECOMING SW AFTER MIDNIGHT. WAVES 1 FT.
SUN...W WINDS 5 TO 10 KT
BECOMING SE IN THE AFTERNOON AND
EVENING, THEN BECOMING SW AFTER MIDNIGHT. WAVES 1 FT.
ANZ530-100800-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
734 PM EDT TUE SEP 9 2025
..SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON
TONIGHT
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. A CHANCE OF SHOWERS AFTER MIDNIGHT.
WED
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT. A
CHANCE OF SHOWERS.
WED NIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT.
THU
N WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
N WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI
NE WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI NIGHT
E WINDS 5 KT. WAVES LESS THAN 1 FT.
SAT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
SUN
S WINDS 5 KT. WAVES LESS THAN 1 FT.
ANZ531-100800-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
734 PM EDT TUE SEP 9 2025
..SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON
TONIGHT
NE WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A CHANCE
OF SHOWERS AFTER MIDNIGHT.
WED
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A CHANCE
OF SHOWERS.
WED NIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT.
THU
N WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
N WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI
NE WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT.
SAT...SE WINDS 5 TO 10 KT
BECOMING SW AFTER MIDNIGHT. WAVES 1 FT.
SUN...S WINDS 5 TO 10 KT
BECOMING SE AFTER MIDNIGHT. WAVES 1 FT.
ANZ538-100800-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
734 PM EDT TUE SEP 9 2025
..SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON
TONIGHT
NE WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A CHANCE
OF SHOWERS AFTER MIDNIGHT.
WED
N WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A CHANCE OF
SHOWERS.
WED NIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
THU
N WINDS 5 KT. WAVES FLAT.
THU NIGHT
N WINDS AROUND 5 KT. WAVES FLAT.
FRI
NE WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI NIGHT
E WINDS 5 KT. WAVES LESS THAN 1 FT.
SAT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
SUN
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
ANZ539-100800-
CHESTER RIVER TO QUEENSTOWN MD-
734 PM EDT TUE SEP 9 2025
..SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON
TONIGHT
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A
SLIGHT CHANCE OF SHOWERS THIS EVENING, THEN A CHANCE OF SHOWERS
AFTER MIDNIGHT.
WED
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT. A
CHANCE OF SHOWERS.
WED NIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT.
THU
N WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
N WINDS AROUND 5 KT. WAVES FLAT.
FRI
NE WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI NIGHT
E WINDS 5 KT. WAVES LESS THAN 1 FT.
SAT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
SUN
S WINDS 5 KT. WAVES LESS THAN 1 FT.
ANZ532-100800-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
734 PM EDT TUE SEP 9 2025
..SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON
TONIGHT
NE WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A SLIGHT
CHANCE OF SHOWERS THIS EVENING, THEN A CHANCE OF SHOWERS AFTER
MIDNIGHT.
WED
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A CHANCE
OF SHOWERS.
WED NIGHT
N WINDS 10 TO 15 KT. WAVES 1 FT.
THU
N WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
N WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI
NE WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT.
SAT...E WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT.
SUN
S WINDS 5 TO 10 KT. WAVES 1 FT.
ANZ540-100800-
EASTERN BAY-
734 PM EDT TUE SEP 9 2025
..SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON
TONIGHT
NE WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A SLIGHT
CHANCE OF SHOWERS THIS EVENING, THEN A CHANCE OF SHOWERS AFTER
MIDNIGHT.
WED
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A CHANCE
OF SHOWERS. PATCHY FOG.
WED NIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT.
THU
N WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
N WINDS 5 KT. WAVES FLAT.
FRI
NE WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT.
SAT...NE WINDS 5 KT
BECOMING S. WAVES 1 FT.
SUN
S WINDS 5 KT. WAVES LESS THAN 1 FT.
ANZ533-100800-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
734 PM EDT TUE SEP 9 2025
..SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON
TONIGHT
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO
3 FT. A CHANCE OF SHOWERS.
WED
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO 3 FT. A
CHANCE OF SHOWERS. PATCHY FOG.
WED NIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT.
THU
N WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
N WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI
NE WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT.
SAT...E WINDS 5 TO 10 KT
BECOMING SW AFTER MIDNIGHT. WAVES 1 FT.
SUN...SW WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT.
ANZ541-100800-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
734 PM EDT TUE SEP 9 2025
..SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON
TONIGHT
NE WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A CHANCE
OF SHOWERS.
WED
N WINDS 15 TO 20 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
PATCHY FOG.
WED NIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
THU
N WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
NE WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI
NE WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT.
SAT...E WINDS 5 TO 10 KT
BECOMING S AFTER MIDNIGHT. WAVES 1 FT.
SUN...SW WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT.
ANZ542-100800-
PATUXENT RIVER TO BROOMES ISLAND MD-
734 PM EDT TUE SEP 9 2025
..SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON
TONIGHT
NE WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A CHANCE
OF SHOWERS.
WED
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A CHANCE
OF SHOWERS. PATCHY FOG.
WED NIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT.
THU
N WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
N WINDS AROUND 5 KT. WAVES 1 FT.
FRI
NE WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT.
SAT...E WINDS 5 TO 10 KT
BECOMING SW AFTER MIDNIGHT. WAVES 1 FT.
SUN
S WINDS 5 KT. WAVES LESS THAN 1 FT.
ANZ534-100800-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
734 PM EDT TUE SEP 9 2025
..SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON
TONIGHT
NE WINDS 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT. A CHANCE
OF SHOWERS.
WED
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT. A CHANCE
OF SHOWERS. PATCHY FOG. VSBY 1 TO 3 NM.
WED NIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
THU
N WINDS 10 TO 15 KT. WAVES 1 FT.
THU NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
NE WINDS 10 KT. WAVES 1 FT.
FRI NIGHT
E WINDS 10 KT. WAVES 1 FT.
SAT...E WINDS 10 KT
BECOMING S AFTER MIDNIGHT. WAVES 1 FT.
SUN...NW WINDS 10 KT
BECOMING S. WAVES 1 FT.
ANZ543-100800-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
734 PM EDT TUE SEP 9 2025
..SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON
TONIGHT
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT. A
CHANCE OF SHOWERS.
WED
N WINDS 15 TO 20 KT. WAVES 2 FT. A CHANCE OF SHOWERS. PATCHY
FOG. VSBY 1 TO 3 NM.
WED NIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
THU
N WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
NE WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT.
SAT...E WINDS 10 KT
BECOMING S AFTER MIDNIGHT. WAVES 1 FT.
SUN...W WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT.
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