846
FZUS51 KLWX 150627
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
226 AM EDT TUE SEP 15 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.
ANZ500-152000-
226 AM EDT TUE SEP 15 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
CANADIAN HIGH PRESSURE WILL REMAIN OVER THE NORTHEASTERN U.S.
THROUGH THE MIDDLE OF THE WEEK. ANOTHER COLD FRONT IS EXPECTED TO
NEAR THE REGION BY FRIDAY MORNING BEFORE HIGH PRESSURE BUILDS IN
FROM THE NORTHWEST INTO THE WEEKEND. SMALL CRAFT ADVISORIES MAY BE
NEEDED AT TIMES ON THURSDAY DUE TO SOUTHERLY CHANNELING EFFECTS.
ANZ535-152000-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
226 AM EDT TUE SEP 15 2026
OVERNIGHT
NE WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE
E WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE NIGHT
S WINDS AROUND 5 KT. WAVES 1 FT.
WED
S WINDS AROUND 5 KT. WAVES 1 FT.
WED NIGHT
S WINDS AROUND 5 KT. WAVES 1 FT.
THU
S WINDS AROUND 5 KT. WAVES 1 FT.
THU NIGHT
S WINDS AROUND 5 KT. WAVES 1 FT.
FRI
N WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS THROUGH
THE NIGHT.
SAT...E WINDS 5 TO 10 KT
BECOMING S AFTER MIDNIGHT. WAVES 1 FT.
ANZ536-152000-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
226 AM EDT TUE SEP 15 2026
OVERNIGHT
NE WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE
E WINDS AROUND 5 KT. WAVES 1 FT.
TUE NIGHT
S WINDS AROUND 5 KT. WAVES 1 FT.
WED
S WINDS AROUND 5 KT. WAVES 1 FT.
WED NIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
THU
S WINDS 5 KT. WAVES LESS THAN 1 FT.
THU NIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI...N WINDS 5 KT
BECOMING NE AFTER MIDNIGHT. WAVES 1 FT. A
CHANCE OF SHOWERS THROUGH THE NIGHT.
SAT...E WINDS 5 TO 10 KT
BECOMING S AFTER MIDNIGHT. WAVES 1 FT.
ANZ537-152000-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
226 AM EDT TUE SEP 15 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EDT THIS MORNING
OVERNIGHT
NE WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
TUE
E WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
TUE NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
WED
SE WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED NIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
THU
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
THU NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
FRI...W WINDS 5 TO 10 KT
BECOMING NE. WAVES 1 TO 2 FT. A CHANCE
OF SHOWERS IN THE AFTERNOON.
SAT...E WINDS 10 TO 15 KT
BECOMING SE. WAVES 2 FT.
ANZ530-152000-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
226 AM EDT TUE SEP 15 2026
OVERNIGHT
NE WINDS 10 KT. WAVES 1 FT.
TUE...E WINDS 5 TO 10 KT UNTIL LATE AFTERNOON
BECOMING LIGHT.
WAVES 1 FT OR LESS.
TUE NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
WED
S WINDS AROUND 5 KT. WAVES FLAT.
WED NIGHT
S WINDS AROUND 5 KT. WAVES FLAT.
THU
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
N WINDS 5 TO 10 KT. WAVES 1 FT.
SAT...E WINDS 5 TO 10 KT
BECOMING S AFTER MIDNIGHT. WAVES 1 FT.
ANZ531-152000-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
226 AM EDT TUE SEP 15 2026
OVERNIGHT
NE WINDS 15 KT. WAVES 2 FT.
TUE...E WINDS 5 TO 10 KT
BECOMING S LATE. WAVES 1 FT.
TUE NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
WED
S WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
N WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
SAT...NE WINDS 10 TO 15 KT
BECOMING S AFTER MIDNIGHT. WAVES 1 TO
2 FT.
ANZ538-152000-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
226 AM EDT TUE SEP 15 2026
OVERNIGHT
NE WINDS 10 KT. WAVES 1 FT.
TUE
E WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
WED
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
WED NIGHT
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
THU
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
THU NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
N WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
SAT...E WINDS 5 TO 10 KT
BECOMING S AFTER MIDNIGHT. WAVES 1 FT.
ANZ539-152000-
CHESTER RIVER TO QUEENSTOWN MD-
226 AM EDT TUE SEP 15 2026
OVERNIGHT
NE WINDS 10 KT. WAVES 1 FT.
TUE
E WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TUE NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
WED
S WINDS 5 KT. WAVES LESS THAN 1 FT.
WED NIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
THU
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
FRI...N WINDS 5 TO 10 KT
BECOMING NE AFTER MIDNIGHT. WAVES 1 FT.
SAT...E WINDS 5 TO 10 KT
BECOMING S AFTER MIDNIGHT. WAVES 1 FT.
ANZ532-152000-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
226 AM EDT TUE SEP 15 2026
OVERNIGHT
NE WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
TUE...E WINDS 5 TO 10 KT
BECOMING S LATE. WAVES 1 TO 2 FT.
TUE NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
WED
S WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
THU NIGHT
S WINDS 10 TO 15 KT. WAVES 2 FT.
FRI...NW WINDS 5 TO 10 KT
BECOMING NE 10 TO 15 KT. WAVES 1 TO
2 FT. A CHANCE OF SHOWERS THROUGH THE NIGHT.
SAT...E WINDS 10 TO 15 KT
BECOMING SE. WAVES 1 TO 2 FT.
ANZ540-152000-
EASTERN BAY-
226 AM EDT TUE SEP 15 2026
OVERNIGHT
NE WINDS 10 KT. WAVES 1 FT.
TUE...E WINDS 5 TO 10 KT
BECOMING S LATE. WAVES 1 FT OR LESS.
TUE NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
WED
S WINDS 5 KT. WAVES LESS THAN 1 FT.
WED NIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
THU
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
FRI...NW WINDS 5 TO 10 KT
BECOMING NE. WAVES 1 FT.
SAT...E WINDS 5 TO 10 KT
BECOMING S AFTER MIDNIGHT. WAVES 1 FT.
ANZ533-152000-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
226 AM EDT TUE SEP 15 2026
OVERNIGHT
NE WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
TUE...E WINDS 5 TO 10 KT
BECOMING SE LATE. WAVES 1 TO 2 FT.
TUE NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
WED
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU...S WINDS 5 KT
INCREASING TO 10 TO 15 KT IN THE AFTERNOON.
WAVES 1 TO 2 FT.
THU NIGHT
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
FRI...NW WINDS 5 TO 10 KT
BECOMING NE 10 TO 15 KT. WAVES 1 TO
2 FT. A CHANCE OF SHOWERS THROUGH THE NIGHT.
SAT...E WINDS 10 TO 15 KT
BECOMING SE. WAVES 1 TO 2 FT.
ANZ541-152000-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
226 AM EDT TUE SEP 15 2026
OVERNIGHT
NE WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
TUE...E WINDS 5 TO 10 KT
BECOMING SE LATE. WAVES 1 FT.
TUE NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
WED
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
FRI...NW WINDS 5 TO 10 KT
BECOMING NE 10 TO 15 KT. WAVES 1 FT.
SAT...E WINDS 10 TO 15 KT
BECOMING SE. WAVES 1 FT.
ANZ542-152000-
PATUXENT RIVER TO BROOMES ISLAND MD-
226 AM EDT TUE SEP 15 2026
OVERNIGHT
NE WINDS 10 KT. WAVES 1 FT.
TUE
E WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
SE WINDS AROUND 5 KT. WAVES 1 FT.
WED
S WINDS AROUND 5 KT. WAVES 1 FT.
WED NIGHT
S WINDS AROUND 5 KT. WAVES 1 FT.
THU
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
FRI...W WINDS 5 KT
BECOMING NE. WAVES 1 FT.
SAT...E WINDS 5 TO 10 KT
BECOMING S AFTER MIDNIGHT. WAVES 1 FT.
ANZ534-152000-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
226 AM EDT TUE SEP 15 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EDT THIS MORNING
OVERNIGHT
NE WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
TUE...NE WINDS 10 TO 15 KT
BECOMING E AROUND 5 KT IN THE
AFTERNOON. WAVES 1 TO 2 FT.
TUE NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
WED
SE WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU
S WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
THU NIGHT
S WINDS 10 TO 15 KT. WAVES 2 FT.
FRI...NW WINDS 5 TO 10 KT
BECOMING NE 10 TO 15 KT. WAVES 1 TO
2 FT.
SAT...E WINDS 10 TO 15 KT
BECOMING SE. WAVES 2 FT.
ANZ543-152000-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
226 AM EDT TUE SEP 15 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EDT THIS MORNING
OVERNIGHT
NE WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
TUE
E WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
WED
SE WINDS AROUND 5 KT. WAVES FLAT.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
THU NIGHT
S WINDS 10 TO 15 KT. WAVES 1 FT.
FRI...W WINDS 5 TO 10 KT
BECOMING NE. WAVES 1 FT.
SAT...E WINDS 10 TO 15 KT
BECOMING SE. WAVES 1 FT.
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