482
FZUS51 KLWX 170645
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
245 AM EDT TUE MAR 17 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.
ANZ500-172000-
245 AM EDT TUE MAR 17 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
A STRONG COLD FRONT CROSSES THE AREA THIS EVENING. A LINE OF STRONG
TO SEVERE THUNDERSTORMS IS EXPECTED TO CROSS THE WATERS THIS
AFTERNOON TO EVENING. DANGEROUS WIND GUSTS IN EXCESS OF 50 KNOTS AND
WATERSPOUTS ARE POSSIBLE. HIGH PRESSURE RETURNS FOR THE MIDDLE TO
LATTER PORTIONS OF THE WEEK. SMALL CRAFT ADVISORIES WILL LIKELY BE
NEEDED THROUGH TUESDAY. GALE CONDITIONS ARE ALSO POSSIBLE THROUGH
LATE TONIGHT.
ANZ535-172000-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
245 AM EDT TUE MAR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING
OVERNIGHT
W WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT.
TUE
W WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
TUE NIGHT
NW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE EVENING.
WAVES 1 FT.
WED
E WINDS AROUND 5 KT. WAVES 1 FT.
WED NIGHT
SE 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 OR LESS.
FRI
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF RAIN THROUGH THE
NIGHT.
SAT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF RAIN IN THE
MORNING.
ANZ536-172000-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
245 AM EDT TUE MAR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING
OVERNIGHT
W WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
TUE
W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
TUE NIGHT
NW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT UNTIL EARLY
MORNING. WAVES 1 FT.
WED
E 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 AROUND 5 KT. WAVES 1 FT.
FRI
SW WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
ANZ537-172000-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
245 AM EDT TUE MAR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING
OVERNIGHT
W WINDS 20 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
TUE
W WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO 3 FT.
TUE NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
WED...N WINDS 5 TO 10 KT
BECOMING SE IN THE AFTERNOON. 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
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
SAT
SW WINDS 10 TO 15 KT. WAVES 2 FT.
ANZ530-172000-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
245 AM EDT TUE MAR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING
OVERNIGHT
W WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 2 FT.
TUE
W WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 FT.
TUE NIGHT
NW WINDS 10 TO 15 KT. GUSTS UP TO 25 KT UNTIL EARLY
MORNING. WAVES 1 TO 2 FT.
WED
W 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 OR LESS.
FRI
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF RAIN AFTER
MIDNIGHT.
SAT
SW WINDS 5 TO 10 KT. WAVES 1 TO 2 FT. A CHANCE OF RAIN IN THE
MORNING.
ANZ531-172000-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
245 AM EDT TUE MAR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING
OVERNIGHT
W WINDS 25 KT WITH GUSTS TO 35 KT. WAVES 3 FT.
TUE
W WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 TO 3 FT.
TUE NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
WED
W WINDS AROUND 5 KT. WAVES 1 FT.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU
S WINDS 5 KT. WAVES LESS THAN 1 FT.
THU NIGHT
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
FRI
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF RAIN AFTER
MIDNIGHT.
SAT...SW WINDS 10 TO 15 KT
BECOMING S AFTER MIDNIGHT. WAVES 1 TO
2 FT. A CHANCE OF RAIN IN THE MORNING.
ANZ538-172000-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
245 AM EDT TUE MAR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING
OVERNIGHT
W WINDS 20 KT WITH GUSTS TO 30 KT. WAVES 2 FT.
TUE
W WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 1 TO 2 FT.
TUE NIGHT
NW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT UNTIL EARLY
MORNING. WAVES 1 FT.
WED
NE WINDS AROUND 5 KT. WAVES FLAT.
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 AROUND 5 KT. WAVES FLAT.
FRI
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF RAIN
THROUGH THE NIGHT.
SAT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF RAIN IN THE
MORNING.
ANZ539-172000-
CHESTER RIVER TO QUEENSTOWN MD-
245 AM EDT TUE MAR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING
OVERNIGHT
W WINDS 25 KT WITH GUSTS TO 35 KT. WAVES 4 FT.
TUE
W WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
TUE NIGHT
NW WINDS 10 TO 15 KT. GUSTS UP TO 25 KT UNTIL EARLY
MORNING. WAVES 2 FT.
WED
W WINDS 5 KT. WAVES LESS THAN 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
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF RAIN AFTER
MIDNIGHT.
SAT
SW WINDS 10 KT. WAVES 2 FT. A CHANCE OF RAIN IN THE MORNING.
ANZ532-172000-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
245 AM EDT TUE MAR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING
OVERNIGHT
W WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
TUE...W WINDS 15 TO 20 KT. GUSTS UP TO 30 KT
DIMINISHING TO
20 KT LATE. WAVES 2 TO 3 FT.
TUE NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
WED...N WINDS 5 TO 10 KT
BECOMING SE IN THE AFTERNOON. 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
S WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
S WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF RAIN AFTER
MIDNIGHT.
SAT...SW WINDS 10 TO 15 KT
BECOMING S. WAVES 2 FT. A CHANCE OF
RAIN IN THE MORNING.
ANZ540-172000-
EASTERN BAY-
245 AM EDT TUE MAR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING
OVERNIGHT
W WINDS 20 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
TUE...W WINDS 15 TO 20 KT. GUSTS UP TO 30 KT
DIMINISHING TO
20 KT LATE. WAVES 2 TO 3 FT.
TUE NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT.
WED...N WINDS 5 TO 10 KT
BECOMING S IN THE AFTERNOON. WAVES 1 FT
OR LESS.
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
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF RAIN AFTER
MIDNIGHT.
SAT
SW WINDS 10 KT. WAVES 1 TO 2 FT. A CHANCE OF RAIN IN THE
MORNING.
ANZ533-172000-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
245 AM EDT TUE MAR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING
OVERNIGHT
W WINDS 20 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
TUE...W WINDS 15 TO 20 KT. GUSTS UP TO 30 KT
DIMINISHING TO
20 KT IN THE AFTERNOON. WAVES 2 TO 3 FT.
TUE NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
WED...N WINDS 5 TO 10 KT
BECOMING SE IN THE AFTERNOON. 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
S WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
SAT...SW WINDS 10 TO 15 KT
BECOMING S. WAVES 2 FT. A CHANCE OF
RAIN IN THE MORNING.
ANZ541-172000-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
245 AM EDT TUE MAR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING
OVERNIGHT
W WINDS 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
TUE...W WINDS 15 TO 20 KT. GUSTS UP TO 30 KT
DIMINISHING TO
20 KT IN THE AFTERNOON. WAVES 2 TO 3 FT.
TUE NIGHT
NW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
WED...N WINDS 5 TO 10 KT
BECOMING S IN THE AFTERNOON. 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
S WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF RAIN AFTER
MIDNIGHT.
SAT...SW WINDS 10 TO 15 KT
BECOMING S. WAVES 2 FT. A CHANCE OF
RAIN IN THE MORNING.
ANZ542-172000-
PATUXENT RIVER TO BROOMES ISLAND MD-
245 AM EDT TUE MAR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING
OVERNIGHT
W WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT.
TUE
W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
TUE NIGHT
NW WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
WED
NE WINDS 5 KT. WAVES LESS THAN 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
S WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
ANZ534-172000-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
245 AM EDT TUE MAR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING
OVERNIGHT
NW WINDS 25 KT WITH GUSTS TO 30 KT. WAVES 4 FT.
TUE...NW WINDS 15 TO 20 KT. GUSTS UP TO 30 KT
DIMINISHING TO
20 KT IN THE AFTERNOON. WAVES 4 FT...SUBSIDING TO 2 FT IN THE
AFTERNOON.
TUE NIGHT
NW WINDS 15 TO 20 KT. WAVES 2 FT.
WED...N WINDS 10 TO 15 KT
BECOMING SE 5 KT IN THE AFTERNOON.
WAVES 1 TO 2 FT.
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
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
SAT...SW WINDS 10 TO 15 KT
BECOMING S. WAVES 2 TO 3 FT.
ANZ543-172000-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
245 AM EDT TUE MAR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING
OVERNIGHT
NW WINDS 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
TUE...NW WINDS 15 TO 20 KT. GUSTS UP TO 30 KT
DIMINISHING TO
20 KT IN THE AFTERNOON. WAVES 2 FT.
TUE NIGHT
NW WINDS 15 TO 20 KT. WAVES 2 FT.
WED...N WINDS 5 TO 10 KT
BECOMING S IN THE AFTERNOON. WAVES 1 FT
OR LESS.
WED NIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
THU
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI
S WINDS 10 TO 15 KT. WAVES 1 FT.
SAT...SW WINDS 10 TO 15 KT
BECOMING S. WAVES 1 TO 2 FT.
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