741
FZUS51 KLWX 210856
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
456 AM EDT WED OCT 21 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.
ANZ500-212300-
456 AM EDT WED OCT 21 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
HIGH PRESSURE REMAINS POSITIONED NORTH OF THE AREA THROUGH TODAY AS
LOW PRESSURE MEANDERS OFF THE MID-ATLANTIC COAST. THE LOW WILL
LIKELY DEPART BY THE END OF THE WEEK AS HIGH PRESSURE BUILDS
OVERHEAD. ADDITIONAL SMALL CRAFT ADVISORIES WILL LIKELY BE NEEDED AT
TIMES THROUGH THE END OF THE WEEK.
ANZ535-212300-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
456 AM EDT WED OCT 21 2026
REST OF THE OVERNIGHT
N WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
N WINDS 5 TO 10 KT. WAVES 1 FT.
TONIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT.
THU
NW WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
THU NIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
NE WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
NE WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
SAT
NE WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
SUN
SE WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
ANZ536-212300-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
456 AM EDT WED OCT 21 2026
REST OF THE OVERNIGHT
N WINDS 15 KT. WAVES 1 FT.
TODAY
N WINDS 10 TO 15 KT. WAVES 1 FT.
TONIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT.
THU
NW WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
THU NIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
NE WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
NE WINDS AROUND 5 KT. WAVES 1 FT.
SAT
NE WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
SUN
E WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
ANZ537-212300-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
456 AM EDT WED OCT 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING
REST OF THE OVERNIGHT
N WINDS 20 KT WITH GUSTS TO 25 KT. WAVES
3 FT.
TODAY
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO 3 FT.
TONIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
THU
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
THU NIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT.
FRI
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
FRI NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
SUN
E WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
ANZ530-212300-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
456 AM EDT WED OCT 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING
REST OF THE OVERNIGHT
N WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
1 FT.
TODAY
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
TONIGHT
N WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
THU
N WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
THU NIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
FRI
NE WINDS 10 TO 15 KT. WAVES 1 FT.
FRI NIGHT
NE WINDS AROUND 5 KT. WAVES FLAT.
SAT
E WINDS AROUND 5 KT. WAVES FLAT.
SUN
S WINDS AROUND 5 KT. WAVES FLAT.
ANZ531-212300-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
456 AM EDT WED OCT 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING
REST OF THE OVERNIGHT
N WINDS 20 KT WITH GUSTS TO 25 KT. WAVES
3 FT.
TODAY
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO 3 FT.
TONIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
THU
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
THU NIGHT
N WINDS 15 TO 20 KT. WAVES 2 FT.
FRI
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
FRI NIGHT
NE WINDS 5 KT. WAVES LESS THAN 1 FT.
SAT
E WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
SUN
SE WINDS AROUND 5 KT. WAVES FLAT.
ANZ538-212300-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
456 AM EDT WED OCT 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING
REST OF THE OVERNIGHT
N WINDS 10 KT WITH GUSTS TO 20 KT. WAVES
1 FT.
TODAY
N WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
TONIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT.
THU
N WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
THU NIGHT
N WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
FRI
NE WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
NE WINDS 5 KT. WAVES FLAT.
SAT
E WINDS AROUND 5 KT. WAVES FLAT.
SUN
SE WINDS AROUND 5 KT. WAVES FLAT.
ANZ539-212300-
CHESTER RIVER TO QUEENSTOWN MD-
456 AM EDT WED OCT 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING
REST OF THE OVERNIGHT
N WINDS 15 KT WITH GUSTS TO 25 KT. WAVES
2 FT.
TODAY
N WINDS 10 TO 15 KT. GUSTS UP TO 25 KT UNTIL LATE
AFTERNOON. WAVES 2 FT.
TONIGHT
N WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
THU
N WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
THU NIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
FRI
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
FRI NIGHT
E WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
SAT
E WINDS AROUND 5 KT. WAVES FLAT.
SUN
SE WINDS AROUND 5 KT. WAVES FLAT.
ANZ532-212300-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
456 AM EDT WED OCT 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING
REST OF THE OVERNIGHT
N WINDS 20 KT WITH GUSTS TO 25 KT. WAVES
3 FT.
TODAY
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO 3 FT.
TONIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
THU
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
THU NIGHT
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO
3 FT.
FRI
NE WINDS 15 TO 20 KT. WAVES 2 TO 3 FT.
FRI NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
E WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
SUN
E WINDS AROUND 5 KT. WAVES FLAT.
ANZ540-212300-
EASTERN BAY-
456 AM EDT WED OCT 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING
REST OF THE OVERNIGHT
N WINDS 20 KT WITH GUSTS TO 25 KT. WAVES
2 FT.
TODAY
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
TONIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
THU
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
THU NIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT.
FRI
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
FRI NIGHT
E WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
SAT
NE WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
SUN
E WINDS AROUND 5 KT. WAVES FLAT.
ANZ533-212300-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
456 AM EDT WED OCT 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING
REST OF THE OVERNIGHT
N WINDS 20 KT WITH GUSTS TO 30 KT. WAVES
4 FT.
TODAY
N WINDS 20 TO 25 KT. WAVES 3 FT.
TONIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 TO 3 FT.
THU
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 3 FT.
THU NIGHT
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO
3 FT.
FRI
NE WINDS 15 TO 20 KT. WAVES 2 TO 3 FT.
FRI NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
SUN
E WINDS AROUND 5 KT. WAVES FLAT.
ANZ541-212300-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
456 AM EDT WED OCT 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING
REST OF THE OVERNIGHT
N WINDS 20 KT WITH GUSTS TO 30 KT. WAVES
2 FT.
TODAY
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
TONIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
THU
N WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
THU NIGHT
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
FRI
NE WINDS 15 TO 20 KT. WAVES 1 TO 2 FT.
FRI NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
SUN
E WINDS AROUND 5 KT. WAVES FLAT.
ANZ542-212300-
PATUXENT RIVER TO BROOMES ISLAND MD-
456 AM EDT WED OCT 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING
REST OF THE OVERNIGHT
N WINDS 15 KT WITH GUSTS TO 25 KT. WAVES
1 FT.
TODAY
N WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT.
TONIGHT
N WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
THU
N WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 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
NE WINDS AROUND 5 KT. WAVES 1 FT.
SAT
NE WINDS AROUND 5 KT. WAVES 1 FT.
SUN
E WINDS AROUND 5 KT. WAVES 1 FT.
ANZ534-212300-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
456 AM EDT WED OCT 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING
REST OF THE OVERNIGHT
N WINDS 25 KT WITH GUSTS TO 30 KT. WAVES
4 FT.
TODAY
N WINDS 20 TO 25 KT. WAVES 3 FT.
TONIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
THU
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
THU NIGHT
N WINDS 15 TO 20 KT. WAVES 2 TO 3 FT.
FRI
NE WINDS 15 TO 20 KT. WAVES 2 TO 3 FT.
FRI NIGHT
NE WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
SAT...NE WINDS 10 TO 15 KT
DIMINISHING TO 5 TO 10 KT. WAVES 1 TO
2 FT.
SUN
NE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
ANZ543-212300-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
456 AM EDT WED OCT 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING
REST OF THE OVERNIGHT
N WINDS 20 KT WITH GUSTS TO 30 KT. WAVES
2 FT.
TODAY...N WINDS 15 TO 20 KT. GUSTS UP TO 30 KT
DIMINISHING TO
20 KT IN THE AFTERNOON. WAVES 2 FT.
TONIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
THU
N WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
THU NIGHT
N WINDS 15 TO 20 KT. WAVES 2 FT.
FRI
NE WINDS 15 TO 20 KT. WAVES 2 FT.
FRI NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
SUN
NE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page