877
FZUS51 KLWX 171757
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1257 PM EST WED DEC 17 2025
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.
ANZ500-180900-
1257 PM EST WED DEC 17 2025
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
WINDS TAPER OFF THROUGH TONIGHT. SMALL CRAFT ADVISORIES ARE LIKELY
WITH STRONG SOUTHERLY WINDS THURSDAY INTO THURSDAY NIGHT AHEAD OF A
STRONG COLD FRONTAL PASSAGE. STRONG POST-FRONTAL WINDS ARE EXPECTED
FRIDAY AS WELL, WITH SMALL CRAFT ADVISORIES LIKELY AND GALES
POSSIBLE, ESPECIALLY NORTH OF NORTH BEACH MD. A BRIEF BREAK IN WINDS
IS EXPECTED FOR THE FIRST HALF OF SATURDAY, BUT STRONG SOUTHERLY
WINDS SATURDAY NIGHT WILL LIKELY NECESSITATE SMALL CRAFT ADVISORIES
ONCE AGAIN.
ANZ535-180900-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
1257 PM EST WED DEC 17 2025
THIS AFTERNOON
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
N WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
THU
SE WINDS AROUND 5 KT. WAVES 1 FT. RAIN LIKELY.
THU NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 TO
2 FT. RAIN.
FRI
W WINDS 15 TO 20 KT WITH GUSTS TO 35 KT. WAVES 1 TO 2 FT.
RAIN.
FRI NIGHT...W WINDS 10 TO 15 KT WITH GUSTS TO 30 KT
BECOMING NW
AROUND 5 KT AFTER MIDNIGHT. WAVES 1 FT.
SAT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
SUN
NW WINDS 5 TO 10 KT. WAVES 1 FT.
ANZ536-180900-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
1257 PM EST WED DEC 17 2025
THIS AFTERNOON
SW WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
TONIGHT
NE WINDS 5 KT. WAVES LESS THAN 1 FT.
THU
SE WINDS 5 TO 10 KT. WAVES 1 FT. RAIN LIKELY.
THU NIGHT
S WINDS 20 TO 25 KT. WAVES 2 FT. RAIN.
FRI
W WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 FT. RAIN.
FRI NIGHT...NW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT
DIMINISHING
TO 5 KT AFTER MIDNIGHT. WAVES 1 TO 2 FT.
SAT
SW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
SUN...SW WINDS 10 TO 15 KT
BECOMING NW 5 TO 10 KT. WAVES 1 FT.
ANZ537-180900-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
1257 PM EST WED DEC 17 2025
THIS AFTERNOON
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES
1 FT.
TONIGHT
N WINDS 5 KT. WAVES LESS THAN 1 FT.
THU
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF RAIN.
THU NIGHT
S WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
RAIN.
FRI
W WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT. RAIN.
FRI NIGHT...NW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT
DIMINISHING
TO 5 TO 10 KT AFTER MIDNIGHT. WAVES 3 FT... SUBSIDING TO 1 FT AFTER
MIDNIGHT.
SAT...NW WINDS 5 TO 10 KT
BECOMING S 15 TO 20 KT. WAVES 1 TO
2 FT.
SUN...SW WINDS 10 TO 15 KT
BECOMING NW. WAVES 1 TO 2 FT.
ANZ530-180900-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
1257 PM EST WED DEC 17 2025
THIS AFTERNOON
W WINDS 10 KT. WAVES 1 FT.
TONIGHT
N WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
THU
E WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF RAIN.
THU NIGHT
S WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 1 TO
2 FT. RAIN.
FRI
W WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 2 FT. A CHANCE
OF RAIN.
FRI NIGHT...W WINDS 20 TO 25 KT WITH GUSTS TO 30 KT
DIMINISHING
TO 10 TO 15 KT AFTER MIDNIGHT. WAVES 1 TO 2 FT.
SAT...SW WINDS 5 TO 10 KT
BECOMING S 10 TO 15 KT. WAVES 1 TO
2 FT.
SUN...W WINDS 10 TO 15 KT
BECOMING NW. WAVES 1 FT.
ANZ531-180900-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
1257 PM EST WED DEC 17 2025
THIS AFTERNOON
SW WINDS 10 KT. WAVES 1 FT.
TONIGHT...NW WINDS 5 TO 10 KT
BECOMING NE LATE. WAVES 1 FT OR
LESS.
THU
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF RAIN.
THU NIGHT
S WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
RAIN.
FRI
W WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT. RAIN.
FRI NIGHT...W WINDS 20 TO 25 KT WITH GUSTS TO 30 KT
BECOMING NW
10 TO 15 KT AFTER MIDNIGHT. WAVES 2 TO 3 FT.
SAT...W WINDS 5 TO 10 KT
BECOMING S 15 TO 20 KT. WAVES 1 TO
2 FT...BUILDING TO 3 FT.
SUN...W WINDS 10 TO 15 KT
BECOMING NW. WAVES 1 TO 2 FT.
ANZ538-180900-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
1257 PM EST WED DEC 17 2025
THIS AFTERNOON
W WINDS 5 TO 10 KT. WAVES 1 FT.
TONIGHT
N WINDS AROUND 5 KT. WAVES FLAT.
THU
E WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF RAIN.
THU NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 TO
2 FT. RAIN.
FRI
W WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 FT. RAIN.
FRI NIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 30 KT IN THE EVENING.
WAVES 1 TO 2 FT.
SAT...W WINDS 5 KT
BECOMING S. WAVES 1 FT OR LESS.
SUN
W WINDS 5 TO 10 KT. WAVES 1 FT.
ANZ539-180900-
CHESTER RIVER TO QUEENSTOWN MD-
1257 PM EST WED DEC 17 2025
THIS AFTERNOON
SW WINDS 5 TO 10 KT. WAVES 1 FT.
TONIGHT
N WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
THU
SE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF RAIN.
THU NIGHT
S WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 2 TO
3 FT. RAIN.
FRI
W WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT. RAIN.
FRI NIGHT
NW WINDS 15 TO 20 KT. GUSTS UP TO 30 KT IN THE EVENING.
WAVES 2 TO 3 FT.
SAT...W WINDS 5 TO 10 KT
BECOMING S 15 TO 20 KT. WAVES 1 TO 2 FT.
SUN...W WINDS 10 TO 15 KT
BECOMING NW. WAVES 1 TO 2 FT.
ANZ532-180900-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
1257 PM EST WED DEC 17 2025
THIS AFTERNOON
SW WINDS 10 KT. WAVES 1 FT.
TONIGHT
N WINDS 5 KT. WAVES LESS THAN 1 FT.
THU
SE WINDS 5 TO 10 KT. WAVES 1 TO 2 FT. RAIN LIKELY.
THU NIGHT
S WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
RAIN.
FRI
W WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT. A CHANCE
OF RAIN.
FRI NIGHT...W WINDS 20 TO 25 KT WITH GUSTS TO 30 KT
BECOMING NW
10 TO 15 KT AFTER MIDNIGHT. WAVES 2 TO 3 FT.
SAT...W WINDS 5 TO 10 KT
BECOMING S 15 TO 20 KT. WAVES 1 TO
2 FT...BUILDING TO 3 FT.
SUN...W WINDS 10 TO 15 KT
BECOMING NW. WAVES 1 TO 2 FT.
ANZ540-180900-
EASTERN BAY-
1257 PM EST WED DEC 17 2025
THIS AFTERNOON
SW WINDS 10 KT. WAVES 1 FT.
TONIGHT
N WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
THU
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF RAIN.
THU NIGHT
S WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 2 TO
3 FT. RAIN.
FRI
W WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT. A CHANCE
OF RAIN.
FRI NIGHT
NW WINDS 15 TO 20 KT. GUSTS UP TO 30 KT IN THE EVENING.
WAVES 3 FT...SUBSIDING TO 1 FT AFTER MIDNIGHT.
SAT...W WINDS 5 TO 10 KT
BECOMING S 15 TO 20 KT. WAVES 1 TO 2 FT.
SUN...W WINDS 10 TO 15 KT
BECOMING NW. WAVES 1 TO 2 FT.
ANZ533-180900-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
1257 PM EST WED DEC 17 2025
THIS AFTERNOON
SW WINDS 10 KT. WAVES 1 TO 2 FT.
TONIGHT...NW WINDS 5 TO 10 KT
BECOMING NE AFTER MIDNIGHT. WAVES
1 FT.
THU
SE WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF RAIN.
THU NIGHT
S WINDS 25 TO 30 KT. WAVES 4 FT. RAIN.
FRI...SW WINDS 20 TO 25 KT
BECOMING W IN THE AFTERNOON. GUSTS UP
TO 30 KT. WAVES 4 FT. RAIN.
FRI NIGHT...NW WINDS 20 TO 25 KT WITH GUSTS TO 30 KT
DIMINISHING
TO 10 TO 15 KT AFTER MIDNIGHT. WAVES 4 FT...SUBSIDING TO 2 FT AFTER
MIDNIGHT.
SAT...NW WINDS 5 TO 10 KT
BECOMING S 15 TO 20 KT. WAVES 1 TO
2 FT...BUILDING TO 3 FT.
SUN...SW WINDS 10 TO 15 KT
BECOMING NW 15 TO 20 KT. WAVES 2 FT.
ANZ541-180900-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
1257 PM EST WED DEC 17 2025
THIS AFTERNOON
SW WINDS 10 KT. WAVES 1 FT.
TONIGHT
N WINDS 5 KT. WAVES LESS THAN 1 FT.
THU
SE WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF RAIN.
THU NIGHT
S WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 2 TO
3 FT. RAIN.
FRI...SW WINDS 20 TO 25 KT
BECOMING W IN THE AFTERNOON. GUSTS UP
TO 30 KT. WAVES 3 FT. RAIN.
FRI NIGHT...NW WINDS 20 TO 25 KT WITH GUSTS TO 30 KT
DIMINISHING
TO 10 TO 15 KT AFTER MIDNIGHT. WAVES 2 TO 3 FT.
SAT...NW WINDS 5 TO 10 KT
BECOMING S 15 TO 20 KT. WAVES 1 TO
2 FT.
SUN...SW WINDS 10 TO 15 KT
BECOMING NW 15 TO 20 KT. WAVES 1 TO
2 FT.
ANZ542-180900-
PATUXENT RIVER TO BROOMES ISLAND MD-
1257 PM EST WED DEC 17 2025
THIS AFTERNOON
SW WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
TONIGHT
N WINDS AROUND 5 KT. WAVES 1 FT.
THU
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF RAIN.
THU NIGHT
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 1 FT.
RAIN.
FRI...SW WINDS 15 TO 20 KT
BECOMING W IN THE AFTERNOON. GUSTS UP
TO 25 KT. WAVES 1 FT. RAIN.
FRI NIGHT
NW WINDS 10 TO 15 KT. GUSTS UP TO 25 KT IN THE EVENING.
WAVES 1 FT.
SAT...W WINDS 5 KT
BECOMING S 10 TO 15 KT. WAVES 1 FT.
SUN
NW WINDS 10 KT. WAVES 1 FT.
ANZ534-180900-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
1257 PM EST WED DEC 17 2025
THIS AFTERNOON
SW WINDS 10 TO 15 KT. WAVES 2 FT.
TONIGHT...NW WINDS 5 TO 10 KT
BECOMING NE AFTER MIDNIGHT. WAVES
1 FT.
THU
SE WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF RAIN.
THU NIGHT
S WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 4 FT.
RAIN.
FRI...SW WINDS 20 TO 25 KT
BECOMING W IN THE AFTERNOON. GUSTS UP
TO 30 KT. WAVES 4 FT. RAIN LIKELY.
FRI NIGHT...NW WINDS 20 TO 25 KT WITH GUSTS TO 30 KT
DIMINISHING
TO 10 TO 15 KT AFTER MIDNIGHT. WAVES 4 FT...SUBSIDING TO 2 FT AFTER
MIDNIGHT.
SAT...NW WINDS 5 TO 10 KT
BECOMING S 15 TO 20 KT. WAVES 1 TO
2 FT...BUILDING TO 3 FT.
SUN...SW WINDS 15 TO 20 KT
BECOMING NW. WAVES 2 TO 3 FT.
ANZ543-180900-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
1257 PM EST WED DEC 17 2025
THIS AFTERNOON
SW WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT.
TONIGHT...NW WINDS 5 TO 10 KT
BECOMING NE AFTER MIDNIGHT. WAVES
1 FT.
THU
SE WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF RAIN.
THU NIGHT
S WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
RAIN.
FRI...SW WINDS 20 TO 25 KT
BECOMING W IN THE AFTERNOON. GUSTS UP
TO 30 KT. WAVES 2 TO 3 FT. RAIN.
FRI NIGHT...NW WINDS 20 TO 25 KT WITH GUSTS TO 30 KT
DIMINISHING
TO 10 TO 15 KT AFTER MIDNIGHT. WAVES 2 FT.
SAT...NW WINDS 5 TO 10 KT
BECOMING S 15 TO 20 KT. WAVES 1 TO
2 FT.
SUN...SW WINDS 15 TO 20 KT
BECOMING NW. WAVES 1 TO 2 FT.
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