034
FZUS51 KLWX 200627
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
227 AM EDT TUE OCT 20 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.
ANZ500-202000-
227 AM EDT TUE OCT 20 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
HIGH PRESSURE REMAINS POSITIONED NORTH OF THE AREA THROUGH THE
MIDDLE OF THE WEEK 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.
ANZ535-202000-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
227 AM EDT TUE OCT 20 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT THIS MORNING THROUGH
THIS AFTERNOON...
OVERNIGHT
N WINDS 10 KT. WAVES 1 FT.
TUE
N WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
TUE NIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT.
WED
N WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
N WINDS 5 KT. WAVES LESS THAN 1 FT.
THU
NW WINDS 5 TO 10 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.
SAT
NE WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
ANZ536-202000-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
227 AM EDT TUE OCT 20 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT THIS MORNING THROUGH
THIS AFTERNOON...
OVERNIGHT
N WINDS 10 KT. WAVES 1 FT.
TUE
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
TUE NIGHT
N WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
WED
N WINDS 5 TO 10 KT. WAVES 1 FT.
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 10 TO 15 KT. WAVES 1 FT.
FRI...N WINDS 10 TO 15 KT
BECOMING NE 5 KT. WAVES 1 FT.
SAT
NE WINDS AROUND 5 KT. WAVES 1 FT.
ANZ537-202000-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
227 AM EDT TUE OCT 20 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
OVERNIGHT
N WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
TUE
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
TUE NIGHT
N WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
WED
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO 3 FT.
WED NIGHT
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...N WINDS 15 TO 20 KT
BECOMING NE 5 TO 10 KT. WAVES 2 TO
3 FT.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
ANZ530-202000-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
227 AM EDT TUE OCT 20 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
OVERNIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
TUE
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
TUE NIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
WED
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
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 15 TO 20 KT. WAVES 1 FT.
FRI...N WINDS 10 TO 15 KT
DIMINISHING TO 5 TO 10 KT. WAVES 1 FT.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
ANZ531-202000-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
227 AM EDT TUE OCT 20 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
OVERNIGHT
N WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
TUE
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
TUE NIGHT
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO
3 FT.
WED...N WINDS 15 TO 20 KT
DIMINISHING TO 10 KT IN THE AFTERNOON.
WAVES 2 TO 3 FT.
WED NIGHT
N WINDS 10 TO 15 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...N WINDS 15 TO 20 KT
BECOMING NE 5 TO 10 KT. WAVES 2 TO
3 FT...SUBSIDING TO 1 FT.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
ANZ538-202000-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
227 AM EDT TUE OCT 20 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
OVERNIGHT
N WINDS 10 KT. WAVES 1 FT.
TUE
N WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
TUE NIGHT
N WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
WED
N WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
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 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
FRI
NE WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
NE WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
ANZ539-202000-
CHESTER RIVER TO QUEENSTOWN MD-
227 AM EDT TUE OCT 20 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
OVERNIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT.
TUE
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
TUE NIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
WED
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
WED NIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT.
THU
N WINDS 10 KT. WAVES 2 FT.
THU NIGHT
N WINDS 15 TO 20 KT. WAVES 2 FT.
FRI...N WINDS 10 TO 15 KT
BECOMING NE 5 TO 10 KT. WAVES 1 TO
2 FT.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
ANZ532-202000-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
227 AM EDT TUE OCT 20 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
OVERNIGHT
N WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
TUE
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
TUE NIGHT
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
WED
N WINDS 15 TO 20 KT. GUSTS UP TO 25 KT IN THE MORNING. WAVES
2 TO 3 FT.
WED NIGHT
N WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
THU
N WINDS 10 TO 15 KT. WAVES 2 FT.
THU NIGHT
N WINDS 20 TO 25 KT. WAVES 2 TO 3 FT.
FRI...N WINDS 15 TO 20 KT
BECOMING NE 10 TO 15 KT. WAVES 2 TO
3 FT...SUBSIDING TO 1 FT.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
ANZ540-202000-
EASTERN BAY-
227 AM EDT TUE OCT 20 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
OVERNIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
TUE
N WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
TUE NIGHT
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
WED
N WINDS 15 TO 20 KT. GUSTS UP TO 25 KT IN THE MORNING. WAVES
1 TO 2 FT.
WED NIGHT
N WINDS 10 TO 15 KT. WAVES 1 FT.
THU
N WINDS 10 TO 15 KT. WAVES 1 FT.
THU NIGHT
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
FRI...N WINDS 15 TO 20 KT
BECOMING NE 5 TO 10 KT. WAVES 1 TO
2 FT.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
ANZ533-202000-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
227 AM EDT TUE OCT 20 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
OVERNIGHT
N WINDS 15 TO 20 KT. WAVES 2 TO 3 FT.
TUE
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
TUE NIGHT
N WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
WED
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
WED NIGHT
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 20 TO 25 KT. WAVES 3 FT.
FRI...N WINDS 15 TO 20 KT...BECOMING NE 10 TO 15 KT. WAVES 3 FT
SUBSIDING TO 2 FT.
SAT...NE WINDS 10 TO 15 KT
DIMINISHING TO 5 KT. WAVES 1 TO 2 FT.
ANZ541-202000-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
227 AM EDT TUE OCT 20 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
OVERNIGHT
N WINDS 15 TO 20 KT. WAVES 2 FT.
TUE
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
TUE NIGHT
N WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 FT.
WED
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
WED NIGHT
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 20 TO 25 KT. WAVES 2 TO 3 FT.
FRI...N WINDS 15 TO 20 KT
BECOMING NE 5 TO 10 KT. WAVES 1 TO
2 FT.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
ANZ542-202000-
PATUXENT RIVER TO BROOMES ISLAND MD-
227 AM EDT TUE OCT 20 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
OVERNIGHT
N WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
TUE
N WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT.
TUE NIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT.
WED
N WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT.
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 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
FRI...NE WINDS 10 TO 15 KT
DIMINISHING TO 5 KT AFTER MIDNIGHT.
WAVES 1 FT.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
ANZ534-202000-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
227 AM EDT TUE OCT 20 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
OVERNIGHT
N WINDS 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
TUE
N WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 4 FT.
TUE NIGHT
N WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 4 FT.
WED...N WINDS 20 TO 25 KT
DIMINISHING TO 15 KT IN THE AFTERNOON.
WAVES 3 FT.
WED NIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 3 FT.
THU
N WINDS 15 TO 20 KT. WAVES 3 FT.
THU NIGHT...N WINDS 10 TO 15 KT
INCREASING TO 20 TO 25 KT AFTER
MIDNIGHT. WAVES 3 FT.
FRI...NE WINDS 15 TO 20 KT. WAVES 3 FT
SUBSIDING TO 2 FT.
SAT
NE WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
ANZ543-202000-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
227 AM EDT TUE OCT 20 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
OVERNIGHT
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
TUE
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
TUE NIGHT
N WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 TO
3 FT.
WED
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
WED NIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
THU
N WINDS 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 FT.
FRI
NE WINDS 15 TO 20 KT. WAVES 1 TO 2 FT.
SAT
NE WINDS 10 TO 15 KT. WAVES 1 FT.
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