403
FZUS51 KLWX 240259
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1058 PM 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.
ANZ500-240800-
1058 PM 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.
ANZ535-240800-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
1058 PM EDT WED SEP 23 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT
REST OF TONIGHT
NE WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
THU
NE WINDS 10 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 20 KT. WAVES 1 FT.
SAT
NW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT.
SAT NIGHT
NW WINDS 5 TO 10 KT. GUSTS UP TO 25 KT IN THE EVENING.
WAVES 1 FT.
SUN...NW WINDS 10 TO 15 KT
DIMINISHING TO 5 KT AFTER MIDNIGHT.
WAVES 1 FT.
MON
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
ANZ536-240800-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
1058 PM EDT WED SEP 23 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT
REST OF TONIGHT
NE WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
THU
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
THU NIGHT...N WINDS 10 TO 15 KT. GUSTS UP TO 25 KT
DIMINISHING
TO 20 KT AFTER MIDNIGHT. WAVES 1 TO 2 FT.
FRI
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
FRI NIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SAT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SAT NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SUN...NW WINDS 10 TO 15 KT
DIMINISHING TO 5 KT AFTER MIDNIGHT.
WAVES 1 FT.
MON
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
ANZ537-240800-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
1058 PM EDT WED SEP 23 2026
..GALE WARNING IN EFFECT UNTIL 6 AM EDT THURSDAY
...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM EDT THURSDAY THROUGH
LATE THURSDAY NIGHT...
REST OF TONIGHT
NE WINDS 25 KT WITH GUSTS TO 30 KT. WAVES 5 FT.
THU
NE WINDS 15 TO 20 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 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
NW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
SAT NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SUN
NW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
MON
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
ANZ530-240800-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
1058 PM EDT WED SEP 23 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT
REST OF TONIGHT
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES
2 FT.
THU
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
THU NIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT.
FRI
N WINDS 15 TO 20 KT. WAVES 2 FT.
FRI NIGHT
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 1 TO
2 FT.
SAT
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SAT NIGHT
NW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SUN...NW WINDS 15 TO 20 KT
DIMINISHING TO 5 TO 10 KT. WAVES 1 TO
2 FT.
MON
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
ANZ531-240800-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
1058 PM EDT WED SEP 23 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT
REST OF TONIGHT
NE WINDS 20 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
THU
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 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 20 TO 25 KT. WAVES 3 FT.
SAT
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
SAT NIGHT
N WINDS 15 TO 20 KT WITH GUSTS 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.
MON
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
ANZ538-240800-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
1058 PM EDT WED SEP 23 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT
REST OF TONIGHT
NE WINDS 15 KT WITH GUSTS TO 25 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 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
FRI NIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SAT
N WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT.
SAT NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT.
SUN
NW WINDS 10 TO 15 KT. WAVES 1 FT.
MON
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
ANZ539-240800-
CHESTER RIVER TO QUEENSTOWN MD-
1058 PM EDT WED SEP 23 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT
REST OF TONIGHT
NE WINDS 20 KT WITH GUSTS TO 30 KT. WAVES 2 FT.
THU
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO 3 FT.
THU NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
FRI
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
FRI NIGHT
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO
3 FT.
SAT
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
SAT NIGHT
N WINDS 15 TO 20 KT. WAVES 3 FT.
SUN
NW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
MON
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
ANZ532-240800-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
1058 PM EDT WED SEP 23 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT
REST OF TONIGHT
NE WINDS 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
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
FRI
N WINDS 20 TO 25 KT. WAVES 3 FT.
FRI NIGHT
N WINDS 20 TO 25 KT. WAVES 3 FT.
SAT
N WINDS 20 TO 25 KT. WAVES 3 FT.
SAT NIGHT
NW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
SUN...NW WINDS 15 TO 20 KT
DIMINISHING TO 10 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT.
MON
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
ANZ540-240800-
EASTERN BAY-
1058 PM EDT WED SEP 23 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT
REST OF TONIGHT
NE WINDS 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
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
FRI
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
FRI NIGHT
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SAT
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SAT NIGHT
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SUN
NW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
MON
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
ANZ533-240800-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
1058 PM EDT WED SEP 23 2026
..GALE WARNING IN EFFECT UNTIL 6 AM EDT THURSDAY
...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM EDT THURSDAY THROUGH
LATE THURSDAY NIGHT...
REST OF TONIGHT...NE WINDS 25 KT WITH GUSTS TO 30 KT. WAVES 5 FT
EXCEPT AROUND 3 FT NEAR THE MOUTH OF THE CHOPTANK.
THU
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 4 FT.
THU NIGHT
NE 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
N WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 4 FT.
SAT NIGHT
NW WINDS 15 TO 20 KT WITH GUSTS 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.
MON
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
ANZ541-240800-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
1058 PM EDT WED SEP 23 2026
..GALE WARNING IN EFFECT UNTIL 6 AM EDT THURSDAY
...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM EDT THURSDAY THROUGH
LATE THURSDAY NIGHT...
REST OF TONIGHT
NE WINDS 25 KT WITH GUSTS TO 35 KT. WAVES 3 FT.
THU
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 2 TO 3 FT.
THU NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO
3 FT.
FRI
N WINDS 20 TO 25 KT. WAVES 3 FT.
FRI NIGHT
N WINDS 20 TO 25 KT. WAVES 3 FT.
SAT
N WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
SAT NIGHT
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO
3 FT.
SUN...NW WINDS 15 TO 20 KT
DIMINISHING TO 5 TO 10 KT AFTER
MIDNIGHT. WAVES 1 TO 2 FT.
MON
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
ANZ542-240800-
PATUXENT RIVER TO BROOMES ISLAND MD-
1058 PM EDT WED SEP 23 2026
..GALE WARNING IN EFFECT UNTIL 6 AM EDT THURSDAY
...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM EDT THURSDAY THROUGH
LATE THURSDAY NIGHT...
REST OF 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 25 KT. WAVES 1 FT.
THU NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT.
FRI
N WINDS 15 TO 20 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
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 1 FT.
SAT NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SUN...NW WINDS 10 TO 15 KT
DIMINISHING TO 5 KT AFTER MIDNIGHT.
WAVES 1 FT.
MON
NW WINDS 5 TO 10 KT. WAVES 1 FT.
ANZ534-240800-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
1058 PM EDT WED SEP 23 2026
..GALE WARNING IN EFFECT UNTIL 6 AM EDT THURSDAY
...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM EDT THURSDAY THROUGH
LATE THURSDAY NIGHT...
REST OF TONIGHT
NE WINDS 25 KT WITH GUSTS TO 30 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
N WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 4 FT.
SAT NIGHT
NW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
SUN...NW WINDS 15 TO 20 KT
DIMINISHING TO 10 KT AFTER MIDNIGHT.
WAVES 3 FT...SUBSIDING TO 1 FT AFTER MIDNIGHT.
MON...NW WINDS 5 TO 10 KT. WAVES 1 TO 2 FT
SUBSIDING TO FLAT
AFTER MIDNIGHT.
ANZ543-240800-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
1058 PM EDT WED SEP 23 2026
..GALE WARNING IN EFFECT UNTIL 6 AM EDT THURSDAY
...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM EDT THURSDAY THROUGH
LATE THURSDAY NIGHT...
REST OF TONIGHT
NE WINDS 25 KT WITH GUSTS TO 30 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 20 TO 25 KT. WAVES 2 TO 3 FT.
SAT
N WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
SAT NIGHT
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO
3 FT.
SUN...NW WINDS 15 TO 20 KT
DIMINISHING TO 10 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT.
MON
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
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