990
FZUS51 KLWX 121158
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
757 AM EDT MON OCT 12 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.
ANZ500-122000-
757 AM EDT MON OCT 12 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
THE REMNANTS OF ISAIAS WILL MOVE ACROSS THE REGION THROUGH MONDAY
MORNING. IN THE WAKE, HIGH PRESSURE BUILDS TO THE SOUTH OF THE
WATERS TUESDAY. A DRY COLD FRONT WILL PUSH SOUTHWARD WEDNESDAY.
SMALL CRAFT ADVISORIES MAY BE NEEDED TUESDAY NIGHT AND WEDNESDAY
NIGHT THROUGH THURSDAY.
ANZ535-122000-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
757 AM EDT MON OCT 12 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 PM EDT THIS AFTERNOON
TODAY
NW WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
TONIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT.
TUE
SW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
WED NIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT.
THU...NE WINDS 5 KT
BECOMING SE AFTER MIDNIGHT. WAVES 1 FT.
FRI...SW WINDS 5 TO 10 KT
BECOMING W 15 TO 20 KT IN THE AFTERNOON
AND EVENING, THEN BECOMING NW 10 TO 15 KT AFTER MIDNIGHT. WAVES 1 TO
2 FT. A CHANCE OF SHOWERS THROUGH THE NIGHT.
ANZ536-122000-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
757 AM EDT MON OCT 12 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 PM EDT THIS AFTERNOON
TODAY
NW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT.
TONIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT.
TUE
SW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
WED NIGHT...W WINDS 5 KT
BECOMING N AFTER MIDNIGHT. WAVES 1 FT.
THU...NE WINDS 5 TO 10 KT
BECOMING SE AFTER MIDNIGHT. WAVES 1 FT.
FRI...SW WINDS 10 TO 15 KT
BECOMING W 20 TO 25 KT IN THE
AFTERNOON AND EVENING, THEN BECOMING NW 15 TO 20 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT...BUILDING TO 3 FT. A CHANCE OF SHOWERS THROUGH THE
NIGHT.
ANZ537-122000-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
757 AM EDT MON OCT 12 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING
TODAY
NW WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 2 TO 3 FT. A
CHANCE OF SHOWERS THIS MORNING.
TONIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE...SW WINDS AROUND 5 KT
BECOMING S LATE. WAVES 1 FT OR LESS.
TUE NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT...SW WINDS 5 TO 10 KT
BECOMING NW AFTER MIDNIGHT. WAVES
1 FT.
THU...NE WINDS 5 TO 10 KT
BECOMING SE AFTER MIDNIGHT. WAVES 1 FT.
FRI...SW WINDS 10 TO 15 KT
BECOMING W 15 TO 20 KT IN THE
AFTERNOON, THEN BECOMING NW 25 TO 30 KT. WAVES 2 FT...BUILDING TO
4 FT. A CHANCE OF SHOWERS THROUGH THE NIGHT.
ANZ530-122000-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
757 AM EDT MON OCT 12 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 PM EDT THIS AFTERNOON
TODAY
N WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A CHANCE OF
SHOWERS THIS MORNING.
TONIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
TUE
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TUE NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
WED
W WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
THU...NE WINDS 5 TO 10 KT
BECOMING SE AFTER MIDNIGHT. WAVES 1 FT.
A CHANCE OF SHOWERS AFTER MIDNIGHT.
FRI...S WINDS 10 TO 15 KT
BECOMING W 20 TO 25 KT IN THE AFTERNOON
AND EVENING, THEN BECOMING NW AFTER MIDNIGHT. WAVES 2 FT. A CHANCE
OF SHOWERS.
ANZ531-122000-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
757 AM EDT MON OCT 12 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 PM EDT THIS AFTERNOON
TODAY
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT. A
CHANCE OF SHOWERS THIS MORNING.
TONIGHT
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE...SW WINDS 10 TO 15 KT. WAVES FLAT
BUILDING TO 2 FT IN THE
AFTERNOON.
TUE NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT.
WED
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
THU...NE WINDS 5 TO 10 KT
BECOMING SE 10 TO 15 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT. A CHANCE OF SHOWERS AFTER MIDNIGHT.
FRI...S WINDS 10 TO 15 KT
BECOMING W 25 TO 30 KT IN THE AFTERNOON
AND EVENING, THEN BECOMING NW AFTER MIDNIGHT. WAVES 2 TO 3 FT...
BUILDING TO 4 FT. A CHANCE OF SHOWERS.
ANZ538-122000-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
757 AM EDT MON OCT 12 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 PM EDT THIS AFTERNOON
TODAY
NW WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A SLIGHT
CHANCE OF SHOWERS THIS MORNING.
TONIGHT
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
TUE
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TUE NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED
W WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
THU...NE WINDS 5 TO 10 KT
BECOMING SE. WAVES 1 FT. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
FRI...S WINDS 5 TO 10 KT
BECOMING W 15 TO 20 KT IN THE AFTERNOON
AND EVENING, THEN BECOMING NW AFTER MIDNIGHT. WAVES 1 TO 2 FT. A
CHANCE OF SHOWERS.
ANZ539-122000-
CHESTER RIVER TO QUEENSTOWN MD-
757 AM EDT MON OCT 12 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 PM EDT THIS AFTERNOON
TODAY
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT. A
CHANCE OF SHOWERS THIS MORNING.
TONIGHT
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TUE NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
WED NIGHT...W WINDS 5 KT
BECOMING N AFTER MIDNIGHT. WAVES 1 FT.
THU...NE WINDS 5 TO 10 KT
BECOMING SE AFTER MIDNIGHT. WAVES 1 FT.
A CHANCE OF SHOWERS AFTER MIDNIGHT.
FRI...S WINDS 10 TO 15 KT
BECOMING W 20 TO 25 KT IN THE AFTERNOON
AND EVENING, THEN BECOMING NW AFTER MIDNIGHT. WAVES 2 TO 3 FT...
BUILDING TO 4 FT. A CHANCE OF SHOWERS.
ANZ532-122000-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
757 AM EDT MON OCT 12 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 PM EDT THIS AFTERNOON
TODAY
N WINDS 10 TO 15 KT. GUSTS UP TO 25 KT UNTIL LATE
AFTERNOON. WAVES 2 FT. A CHANCE OF SHOWERS THIS MORNING.
TONIGHT
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE...SW WINDS 5 TO 10 KT
BECOMING S LATE. WAVES 1 FT OR LESS.
TUE NIGHT
SW WINDS 10 TO 15 KT. WAVES 2 FT.
WED
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT...W WINDS 5 KT
BECOMING N AFTER MIDNIGHT. WAVES 1 FT.
THU...NE WINDS 10 TO 15 KT
BECOMING SE. WAVES 1 TO 2 FT. A CHANCE
OF SHOWERS AFTER MIDNIGHT.
FRI...S WINDS 15 KT
BECOMING W 20 TO 25 KT IN THE AFTERNOON, THEN
BECOMING NW 25 TO 30 KT. WAVES 2 TO 3 FT... BUILDING TO 4 FT. A
CHANCE OF SHOWERS.
ANZ540-122000-
EASTERN BAY-
757 AM EDT MON OCT 12 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 PM EDT THIS AFTERNOON
TODAY
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
SHOWERS LIKELY THIS MORNING.
TONIGHT
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE...SW WINDS 5 TO 10 KT
BECOMING S LATE. WAVES 1 FT OR LESS.
TUE NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT...W WINDS 5 KT
BECOMING N AFTER MIDNIGHT. WAVES 1 FT.
THU...NE WINDS 5 TO 10 KT
BECOMING SE AFTER MIDNIGHT. WAVES 1 FT.
A CHANCE OF SHOWERS AFTER MIDNIGHT.
FRI...S WINDS 10 TO 15 KT
BECOMING W 15 TO 20 KT IN THE
AFTERNOON, THEN BECOMING NW 25 TO 30 KT. WAVES 2 TO 3 FT. A CHANCE
OF SHOWERS.
ANZ533-122000-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
757 AM EDT MON OCT 12 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING
TODAY
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO 3 FT.
SHOWERS LIKELY THIS MORNING.
TONIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE...SW WINDS 5 TO 10 KT
BECOMING S LATE. WAVES 1 FT OR LESS.
TUE NIGHT
SW WINDS 10 TO 15 KT. WAVES 2 FT.
WED
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT...SW WINDS 5 TO 10 KT
BECOMING N AFTER MIDNIGHT. WAVES
1 FT.
THU...NE WINDS 10 TO 15 KT
BECOMING SE. WAVES 1 TO 2 FT.
FRI...S WINDS 10 TO 15 KT
BECOMING W 20 TO 25 KT IN THE
AFTERNOON, THEN BECOMING NW 25 TO 30 KT. WAVES 2 TO 3 FT...BUILDING
TO 5 FT. A CHANCE OF SHOWERS THROUGH THE NIGHT.
ANZ541-122000-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
757 AM EDT MON OCT 12 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 PM EDT THIS AFTERNOON
TODAY
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SHOWERS LIKELY THIS MORNING.
TONIGHT
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE...SW WINDS 5 TO 10 KT
BECOMING S LATE. WAVES 1 FT OR LESS.
TUE NIGHT
S WINDS 10 TO 15 KT. WAVES 1 FT.
WED
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT...SW WINDS 5 KT
BECOMING N AFTER MIDNIGHT. WAVES 1 FT.
THU...NE WINDS 5 TO 10 KT
BECOMING SE 10 TO 15 KT AFTER MIDNIGHT.
WAVES 1 FT.
FRI...S WINDS 10 TO 15 KT
BECOMING W 15 TO 20 KT IN THE
AFTERNOON, THEN BECOMING NW 25 TO 30 KT. WAVES 2 TO 3 FT...BUILDING
TO 4 FT. A CHANCE OF SHOWERS THROUGH THE NIGHT.
ANZ542-122000-
PATUXENT RIVER TO BROOMES ISLAND MD-
757 AM EDT MON OCT 12 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 PM EDT THIS AFTERNOON
TODAY
NW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT.
SHOWERS LIKELY THIS MORNING.
TONIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT.
TUE...SW WINDS 5 KT
BECOMING S LATE. WAVES 1 FT.
TUE NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
WED NIGHT
W WINDS AROUND 5 KT. WAVES 1 FT.
THU...NE WINDS 5 TO 10 KT
BECOMING SE AFTER MIDNIGHT. WAVES 1 FT.
FRI...SW WINDS 10 TO 15 KT
BECOMING NW 15 TO 20 KT. WAVES 1 TO
2 FT. A CHANCE OF SHOWERS THROUGH THE NIGHT.
ANZ534-122000-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
757 AM EDT MON OCT 12 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING
TODAY
NW WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
SHOWERS THIS MORNING.
TONIGHT
NW WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
TUE...W WINDS 5 KT
BECOMING S IN THE AFTERNOON. WAVES 1 FT.
TUE NIGHT
S WINDS 10 TO 15 KT. WAVES 2 FT.
WED
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT...SW WINDS 5 TO 10 KT
BECOMING NW AFTER MIDNIGHT. WAVES
1 FT.
THU...NE WINDS 10 TO 15 KT
BECOMING SE. WAVES 1 TO 2 FT.
FRI...S WINDS 10 TO 15 KT
BECOMING W 15 TO 20 KT IN THE
AFTERNOON, THEN BECOMING NW 25 TO 30 KT. WAVES 2 TO 3 FT...BUILDING
TO 6 FT. A CHANCE OF SHOWERS.
ANZ543-122000-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
757 AM EDT MON OCT 12 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING
TODAY
NW WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 FT.
SHOWERS THIS MORNING.
TONIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE...W WINDS 5 TO 10 KT
BECOMING S LATE. WAVES 1 FT OR LESS.
TUE NIGHT
S WINDS 10 TO 15 KT. WAVES 1 FT.
WED
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT...SW WINDS 5 TO 10 KT
BECOMING NW AFTER MIDNIGHT. WAVES
1 FT.
THU...NE WINDS 5 TO 10 KT
BECOMING SE 10 TO 15 KT AFTER MIDNIGHT.
WAVES 1 FT.
FRI...SW WINDS 15 TO 20 KT
BECOMING NW 25 TO 30 KT. WAVES 2 TO
3 FT...BUILDING TO 4 FT AFTER MIDNIGHT. A CHANCE OF SHOWERS.
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