993
FZUS51 KLWX 231827
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
227 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-
227 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-
227 PM EDT WED SEP 23 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT
THIS AFTERNOON
NE WINDS 10 KT WITH GUSTS TO 25 KT. WAVES 1 FT. A
SLIGHT CHANCE OF SHOWERS.
TONIGHT
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 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 20 KT. WAVES 1 FT.
SAT
NW WINDS 10 TO 15 KT. WAVES 1 FT.
SUN...NW WINDS 10 TO 15 KT
DIMINISHING TO 5 KT AFTER MIDNIGHT.
WAVES 1 FT.
ANZ536-240800-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
227 PM EDT WED SEP 23 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT
THIS AFTERNOON
NE WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT. A
SLIGHT CHANCE OF SHOWERS.
TONIGHT
NE WINDS 15 TO 20 KT. GUSTS UP TO 30 KT IN THE EVENING.
WAVES 2 FT.
THU
NE WINDS 15 TO 20 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 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 2 FT.
SAT
NW WINDS 10 TO 15 KT. WAVES 2 FT.
SUN...NW WINDS 10 TO 15 KT
DIMINISHING TO 5 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT.
ANZ537-240800-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
227 PM EDT WED SEP 23 2026
..GALE WARNING IN EFFECT THROUGH LATE TONIGHT
...SMALL CRAFT ADVISORY IN EFFECT FROM THURSDAY MORNING THROUGH LATE
THURSDAY NIGHT...
THIS AFTERNOON
NE WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES
4 FT. A CHANCE OF SHOWERS.
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 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 4 FT.
FRI NIGHT
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 4 FT.
SAT
NW WINDS 15 TO 20 KT. WAVES 3 FT.
SUN...NW WINDS 10 TO 15 KT. WAVES 2 TO 3 FT
SUBSIDING TO 1 FT
AFTER MIDNIGHT.
ANZ530-240800-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
227 PM EDT WED SEP 23 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT
THIS AFTERNOON
NE WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
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 15 TO 20 KT. GUSTS UP TO 25 KT AFTER MIDNIGHT.
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 2 FT.
SAT
NW WINDS 15 TO 20 KT. WAVES 2 FT.
SUN...NW WINDS 15 TO 20 KT
DIMINISHING TO 5 TO 10 KT. WAVES 1 TO
2 FT.
ANZ531-240800-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
227 PM EDT WED SEP 23 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT
THIS AFTERNOON
NE WINDS 20 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
TONIGHT
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
THU...NE WINDS 20 TO 25 KT
DIMINISHING TO 15 KT LATE. 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. WAVES 3 FT.
SUN...NW WINDS 15 TO 20 KT
DIMINISHING TO 10 KT AFTER MIDNIGHT.
WAVES 2 TO 3 FT.
ANZ538-240800-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
227 PM EDT WED SEP 23 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT
THIS AFTERNOON
NE WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
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 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 TO 2 FT.
FRI NIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT.
SAT
NW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
SUN
NW WINDS 10 TO 15 KT. WAVES 1 FT.
ANZ539-240800-
CHESTER RIVER TO QUEENSTOWN MD-
227 PM EDT WED SEP 23 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT
THIS AFTERNOON
NE WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
TONIGHT
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO
3 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 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 5 TO 10 KT. WAVES 2 TO
3 FT.
ANZ532-240800-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
227 PM EDT WED SEP 23 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT
THIS AFTERNOON
NE WINDS 20 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
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
NE WINDS 20 TO 25 KT. WAVES 3 FT.
FRI
N WINDS 20 TO 25 KT. WAVES 4 FT.
FRI NIGHT
N WINDS 20 TO 25 KT. WAVES 4 FT.
SAT
N 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.
ANZ540-240800-
EASTERN BAY-
227 PM EDT WED SEP 23 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT
THIS AFTERNOON
NE WINDS 15 KT WITH GUSTS TO 30 KT. WAVES 2 FT.
TONIGHT
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 2 TO
3 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 FT.
SAT
N WINDS 15 TO 20 KT. WAVES 2 TO 3 FT.
SUN
NW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
ANZ533-240800-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
227 PM EDT WED SEP 23 2026
..GALE WARNING IN EFFECT THROUGH LATE TONIGHT
...SMALL CRAFT ADVISORY IN EFFECT FROM THURSDAY MORNING THROUGH LATE
THURSDAY NIGHT...
THIS AFTERNOON...NE WINDS 25 KT WITH GUSTS TO 35 KT. WAVES 4 FT
EXCEPT AROUND 3 FT NEAR THE MOUTH OF THE CHOPTANK. A SLIGHT CHANCE
OF SHOWERS.
TONIGHT
NE WINDS 25 TO 30 KT. WAVES 5 FT.
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 5 FT.
SAT
NW WINDS 20 TO 25 KT. WAVES 4 FT.
SUN...NW WINDS 15 TO 20 KT
DIMINISHING TO 10 KT AFTER MIDNIGHT.
WAVES 3 FT...SUBSIDING TO 2 FT AFTER MIDNIGHT.
ANZ541-240800-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
227 PM EDT WED SEP 23 2026
..GALE WARNING IN EFFECT THROUGH LATE TONIGHT
...SMALL CRAFT ADVISORY IN EFFECT FROM THURSDAY MORNING THROUGH LATE
THURSDAY NIGHT...
THIS AFTERNOON
NE WINDS 20 KT WITH GUSTS TO 35 KT. WAVES 3 FT. A
SLIGHT CHANCE OF SHOWERS.
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
NE WINDS 20 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. WAVES 3 FT.
SUN...NW WINDS 15 TO 20 KT
DIMINISHING TO 5 TO 10 KT AFTER
MIDNIGHT. WAVES 2 TO 3 FT.
ANZ542-240800-
PATUXENT RIVER TO BROOMES ISLAND MD-
227 PM EDT WED SEP 23 2026
..GALE WARNING IN EFFECT THROUGH LATE TONIGHT
...SMALL CRAFT ADVISORY IN EFFECT FROM THURSDAY MORNING THROUGH LATE
THURSDAY NIGHT...
THIS AFTERNOON
NE WINDS 20 KT WITH GUSTS TO 35 KT. WAVES 1 FT. A
SLIGHT CHANCE OF SHOWERS.
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 TO
2 FT.
SAT...NW WINDS 15 TO 20 KT
DIMINISHING TO 10 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT.
SUN...NW WINDS 10 TO 15 KT
DIMINISHING TO 5 KT AFTER MIDNIGHT.
WAVES 1 FT.
ANZ534-240800-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
227 PM EDT WED SEP 23 2026
..GALE WARNING IN EFFECT THROUGH LATE TONIGHT
...SMALL CRAFT ADVISORY IN EFFECT FROM THURSDAY MORNING THROUGH LATE
THURSDAY NIGHT...
THIS AFTERNOON
NE WINDS 25 KT WITH GUSTS TO 35 KT. WAVES 5 FT. A
SLIGHT CHANCE OF SHOWERS.
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 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 5 FT.
FRI NIGHT
N WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 5 FT.
SAT...N WINDS 20 TO 25 KT. WAVES 5 FT
SUBSIDING TO 4 FT AFTER
MIDNIGHT.
SUN...NW WINDS 15 TO 20 KT
DIMINISHING TO 10 KT AFTER MIDNIGHT.
WAVES 3 FT...SUBSIDING TO 2 FT AFTER MIDNIGHT.
ANZ543-240800-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
227 PM EDT WED SEP 23 2026
..GALE WARNING IN EFFECT THROUGH LATE TONIGHT
...SMALL CRAFT ADVISORY IN EFFECT FROM THURSDAY MORNING THROUGH LATE
THURSDAY NIGHT...
THIS AFTERNOON
NE WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES
3 FT. A SLIGHT CHANCE OF SHOWERS.
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 20 TO 25 KT. WAVES 3 FT.
SAT
N 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.
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