766
FZUS51 KLWX 231259
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
859 AM EDT WED SEP 23 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.
ANZ500-232000-
859 AM EDT WED SEP 23 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
A STRONG AREA OF HIGH PRESSURE WILL REMAIN IN PLACE TO OUR NORTH
THROUGH THE REMAINDER OF THE WEEK LEADING TO A PROLONGED PERIOD OF
ONSHORE FLOW. A STRONG COASTAL LOW WILL THEN DEVELOP IN THE ATLANTIC
THURSDAY AND INTENSIFY AS IT LIFTS NORTHWARD INTO THIS WEEKEND.
SMALL CRAFT ADVISORIES WILL LIKELY BE NEEDED FOR MUCH OF THE FRIDAY
THROUGH SATURDAY TIME PERIOD, AND A FEW LOW-END GALE GUSTS CAN'T BE
RULED OUT.
ANZ535-232000-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
859 AM EDT WED SEP 23 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT
TODAY
NE WINDS 10 KT WITH GUSTS TO 25 KT. WAVES 1 FT. A CHANCE OF
SHOWERS EARLY THIS MORNING, THEN A SLIGHT CHANCE OF SHOWERS THIS
AFTERNOON.
TONIGHT
NE WINDS 5 TO 10 KT WITH GUSTS TO 25 KT. WAVES 1 FT.
THU
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
THU NIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
N WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT.
FRI NIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT.
SAT
NW WINDS 10 TO 15 KT. WAVES 1 FT.
SUN
NW WINDS 10 TO 15 KT. WAVES 1 FT.
ANZ536-232000-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
859 AM EDT WED SEP 23 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT
TODAY
NE WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT. RAIN LIKELY
EARLY THIS MORNING, THEN A CHANCE OF SHOWERS THIS AFTERNOON.
TONIGHT
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 FT.
THU
NE WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
THU NIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 TO
2 FT.
FRI
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 1 TO 2 FT.
FRI NIGHT
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SAT
NW WINDS 15 TO 20 KT. WAVES 2 FT.
SUN
NW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
ANZ537-232000-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
859 AM EDT WED SEP 23 2026
..GALE WARNING IN EFFECT THROUGH LATE TONIGHT
...SMALL CRAFT ADVISORY IN EFFECT FROM THURSDAY MORNING THROUGH LATE
THURSDAY NIGHT...
TODAY
NE WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES 4 FT. RAIN
LIKELY EARLY THIS MORNING, THEN A CHANCE OF SHOWERS THIS AFTERNOON.
TONIGHT
NE WINDS 20 TO 25 KT WITH GUSTS TO 40 KT. WAVES 5 FT.
THU
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 4 FT.
THU NIGHT
N WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 4 FT.
FRI
N WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 4 FT.
FRI NIGHT
N WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 4 FT.
SAT
NW WINDS 20 TO 25 KT. WAVES 3 FT.
SUN...NW WINDS 15 TO 20 KT
DIMINISHING TO 10 KT AFTER MIDNIGHT.
WAVES 2 TO 3 FT...SUBSIDING TO 1 FT AFTER MIDNIGHT.
ANZ530-232000-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
859 AM EDT WED SEP 23 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT
TODAY
NE WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT. A SLIGHT
CHANCE OF SHOWERS EARLY THIS MORNING.
TONIGHT
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 FT.
THU
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
THU NIGHT
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 1 TO
2 FT.
FRI
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
FRI NIGHT
N WINDS 20 TO 25 KT. WAVES 2 FT.
SAT
NW WINDS 20 TO 25 KT. WAVES 2 FT.
SUN
NW WINDS 15 TO 20 KT. WAVES 1 TO 2 FT.
ANZ531-232000-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
859 AM EDT WED SEP 23 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT
TODAY
NE WINDS 20 KT WITH GUSTS TO 30 KT. WAVES 3 FT. A CHANCE OF
SHOWERS EARLY THIS MORNING.
TONIGHT
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
THU...NE WINDS 15 TO 20 KT. GUSTS UP TO 30 KT
DIMINISHING TO
20 KT LATE. WAVES 3 FT.
THU NIGHT...NE WINDS 10 TO 15 KT
BECOMING N 20 TO 25 KT AFTER
MIDNIGHT. WAVES 2 TO 3 FT.
FRI
N WINDS 20 TO 25 KT. WAVES 3 FT.
FRI NIGHT
N WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
SAT
N WINDS 20 TO 25 KT. WAVES 3 FT.
SUN...NW WINDS 20 TO 25 KT
BECOMING N 10 TO 15 KT. WAVES 2 TO
3 FT.
ANZ538-232000-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
859 AM EDT WED SEP 23 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT
TODAY
NE WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT. A CHANCE OF
SHOWERS EARLY THIS MORNING.
TONIGHT
NE WINDS 10 TO 15 KT WITH GUSTS TO 30 KT. WAVES 2 FT.
THU
NE WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 TO 2 FT.
THU NIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
FRI
N WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 1 TO 2 FT.
FRI NIGHT
N WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 1 TO 2 FT.
SAT
N WINDS 15 TO 20 KT. WAVES 1 TO 2 FT.
SUN
NW WINDS 10 TO 15 KT. WAVES 1 FT.
ANZ539-232000-
CHESTER RIVER TO QUEENSTOWN MD-
859 AM EDT WED SEP 23 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT
TODAY
NE WINDS 15 KT WITH GUSTS TO 30 KT. WAVES 2 FT. A CHANCE OF
SHOWERS EARLY THIS MORNING.
TONIGHT
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 TO
3 FT.
THU...NE WINDS 15 TO 20 KT. GUSTS UP TO 30 KT
DIMINISHING TO
20 KT IN THE AFTERNOON. WAVES 2 TO 3 FT.
THU NIGHT
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO
3 FT.
FRI
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
FRI NIGHT
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
SAT
N WINDS 15 TO 20 KT. WAVES 3 FT.
SUN...NW WINDS 15 TO 20 KT
BECOMING N 10 KT AFTER MIDNIGHT. WAVES
2 TO 3 FT.
ANZ532-232000-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
859 AM EDT WED SEP 23 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT
TODAY
NE WINDS 20 KT WITH GUSTS TO 30 KT. WAVES 3 FT. A CHANCE OF
RAIN EARLY THIS MORNING.
TONIGHT
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 4 FT.
THU
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
THU NIGHT
N WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
FRI
N WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 4 FT.
FRI NIGHT
N WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 4 FT.
SAT
NW WINDS 20 TO 25 KT. WAVES 3 FT.
SUN...NW WINDS 20 TO 25 KT
BECOMING N 10 TO 15 KT. WAVES 2 TO
3 FT.
ANZ540-232000-
EASTERN BAY-
859 AM EDT WED SEP 23 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT
TODAY
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 FT. A
CHANCE OF RAIN EARLY THIS MORNING, THEN A SLIGHT CHANCE OF SHOWERS
THIS AFTERNOON.
TONIGHT
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 TO
3 FT.
THU
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 TO 3 FT.
THU NIGHT
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
FRI
N WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 FT.
FRI NIGHT
N WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 2 FT.
SAT
N WINDS 20 TO 25 KT. WAVES 2 TO 3 FT.
SUN...NW WINDS 15 TO 20 KT
BECOMING N 10 KT AFTER MIDNIGHT. WAVES
1 TO 2 FT.
ANZ533-232000-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
859 AM EDT WED SEP 23 2026
..GALE WARNING IN EFFECT THROUGH LATE TONIGHT
...SMALL CRAFT ADVISORY IN EFFECT FROM THURSDAY MORNING THROUGH LATE
THURSDAY NIGHT...
TODAY...NE WINDS 25 KT WITH GUSTS TO 35 KT. WAVES 4 FT
EXCEPT
AROUND 3 FT NEAR THE MOUTH OF THE CHOPTANK. A CHANCE OF RAIN EARLY
THIS MORNING, THEN A SLIGHT CHANCE OF SHOWERS THIS AFTERNOON.
TONIGHT
NE WINDS 20 TO 25 KT WITH GUSTS TO 40 KT. WAVES 5 FT.
THU...NE WINDS 20 TO 25 KT. GUSTS UP TO 35 KT
DIMINISHING TO
30 KT IN THE AFTERNOON. WAVES 4 FT.
THU NIGHT
N WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 4 FT.
FRI
N WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES 4 FT.
FRI NIGHT
N WINDS 25 TO 30 KT. WAVES 5 FT.
SAT
N WINDS 25 TO 30 KT. WAVES 4 FT.
SUN...NW WINDS 20 TO 25 KT
DIMINISHING TO 10 TO 15 KT AFTER
MIDNIGHT. WAVES 3 FT...SUBSIDING TO 2 FT AFTER MIDNIGHT.
ANZ541-232000-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
859 AM EDT WED SEP 23 2026
..GALE WARNING IN EFFECT THROUGH LATE TONIGHT
...SMALL CRAFT ADVISORY IN EFFECT FROM THURSDAY MORNING THROUGH LATE
THURSDAY NIGHT...
TODAY
NE WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES 3 FT. RAIN
LIKELY EARLY THIS MORNING, THEN A SLIGHT CHANCE OF SHOWERS THIS
AFTERNOON.
TONIGHT
NE WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES 3 FT.
THU
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
THU NIGHT
N WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 2 TO
3 FT.
FRI
N WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
FRI NIGHT
N WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
SAT
N WINDS 20 TO 25 KT. WAVES 3 FT.
SUN...NW WINDS 20 TO 25 KT
BECOMING N 10 TO 15 KT. WAVES 2 TO
3 FT.
ANZ542-232000-
PATUXENT RIVER TO BROOMES ISLAND MD-
859 AM EDT WED SEP 23 2026
..GALE WARNING IN EFFECT THROUGH LATE TONIGHT
...SMALL CRAFT ADVISORY IN EFFECT FROM THURSDAY MORNING THROUGH LATE
THURSDAY NIGHT...
TODAY
NE WINDS 15 TO 20 KT WITH GUSTS TO 35 KT. WAVES 1 FT. RAIN
LIKELY EARLY THIS MORNING, THEN A CHANCE OF SHOWERS THIS AFTERNOON.
TONIGHT
NE WINDS 15 TO 20 KT WITH GUSTS TO 35 KT. WAVES 1 FT.
THU
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 1 FT.
THU NIGHT
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 1 FT.
FRI
N WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 1 FT.
FRI NIGHT
N WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 1 TO
2 FT.
SAT
NW WINDS 15 TO 20 KT. WAVES 1 TO 2 FT.
SUN...NW WINDS 15 TO 20 KT
DIMINISHING TO 5 TO 10 KT. WAVES 1 FT.
ANZ534-232000-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
859 AM EDT WED SEP 23 2026
..GALE WARNING IN EFFECT THROUGH LATE TONIGHT
...SMALL CRAFT ADVISORY IN EFFECT FROM THURSDAY MORNING THROUGH LATE
THURSDAY NIGHT...
TODAY
NE WINDS 25 KT WITH GUSTS TO 35 KT. WAVES 5 FT. RAIN LIKELY
EARLY THIS MORNING, THEN A CHANCE OF SHOWERS THIS AFTERNOON.
TONIGHT
NE WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES 5 FT.
THU
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 5 FT.
THU NIGHT
N WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 5 FT.
FRI
N WINDS 25 TO 30 KT. WAVES 5 FT.
FRI NIGHT
N WINDS 25 TO 30 KT. WAVES 5 FT.
SAT...N WINDS 25 TO 30 KT. WAVES 5 FT
SUBSIDING TO 4 FT AFTER
MIDNIGHT.
SUN...NW WINDS 20 TO 25 KT
DIMINISHING TO 10 TO 15 KT AFTER
MIDNIGHT. WAVES 3 FT...SUBSIDING TO 2 FT AFTER MIDNIGHT.
ANZ543-232000-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
859 AM EDT WED SEP 23 2026
..GALE WARNING IN EFFECT THROUGH LATE TONIGHT
...SMALL CRAFT ADVISORY IN EFFECT FROM THURSDAY MORNING THROUGH LATE
THURSDAY NIGHT...
TODAY
NE WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES 3 FT. RAIN
LIKELY EARLY THIS MORNING, THEN A CHANCE OF SHOWERS THIS AFTERNOON.
TONIGHT
NE WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES 3 FT.
THU
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
THU NIGHT
N WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
FRI
N WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
FRI NIGHT
N WINDS 25 TO 30 KT. WAVES 3 FT.
SAT
N WINDS 25 TO 30 KT. WAVES 3 FT. A CHANCE OF SHOWERS IN THE
AFTERNOON.
SUN...NW WINDS 20 TO 25 KT
DIMINISHING TO 10 TO 15 KT AFTER
MIDNIGHT. WAVES 2 TO 3 FT...SUBSIDING TO 1 FT AFTER MIDNIGHT.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page