412
FZUS51 KLWX 171529
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1129 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-
1129 AM EDT TUE MAR 17 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
BEHIND A STRONG COLD FRONT, BLUSTERY WEST TO NORTHWESTERLY WINDS ARE
EXPECTED THROUGH TONIGHT. HIGH PRESSURE RETURNS FOR THE MIDDLE TO
LATTER PORTIONS OF THE WEEK. ANOTHER FRONTAL SYSTEM NEARS THE
REGION OVER THE WEEKEND. SMALL CRAFT ADVISORIES MAY NEED TO BE
EXTENDED THROUGH THE EVENING AND PORTIONS OF THE NIGHT.
ANZ535-172000-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
1129 AM EDT TUE MAR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING
REST OF TODAY
W WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A
SLIGHT CHANCE OF SNOW SHOWERS THIS AFTERNOON WITH VSBY 1 TO 3 NM.
TONIGHT
NW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT UNTIL EARLY
MORNING. 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.
FRI
SW WINDS AROUND 5 KT. WAVES 1 FT.
SAT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
ANZ536-172000-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
1129 AM EDT TUE MAR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING
REST OF TODAY
W WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A
CHANCE OF SNOW SHOWERS THIS AFTERNOON WITH VSBY 1 TO 3 NM.
TONIGHT
NW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT UNTIL EARLY
MORNING. WAVES 1 FT. A CHANCE OF SNOW.
WED
E WINDS AROUND 5 KT. WAVES 1 FT.
WED NIGHT
SE 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
S 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-
1129 AM EDT TUE MAR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
REST OF TODAY
NW WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A
SLIGHT CHANCE OF RAIN AND SNOW SHOWERS THIS AFTERNOON WITH VSBY 1 TO
3 NM.
TONIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A
CHANCE OF SNOW.
WED...N WINDS 5 TO 10 KT
BECOMING SE IN THE AFTERNOON. WAVES
1 FT.
WED NIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
THU
SE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
THU NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
SAT
S WINDS 10 TO 15 KT. WAVES 1 FT.
ANZ530-172000-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
1129 AM EDT TUE MAR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
REST OF TODAY
W WINDS 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT. A
SLIGHT CHANCE OF SNOW SHOWERS THIS AFTERNOON WITH VSBY 1 TO 3 NM.
TONIGHT...NW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT
DIMINISHING
TO 5 TO 10 KT LATE. WAVES 1 TO 2 FT.
WED
N WINDS AROUND 5 KT. WAVES FLAT.
WED NIGHT
S WINDS AROUND 5 KT. WAVES FLAT.
THU
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
THU NIGHT
S WINDS AROUND 5 KT. WAVES FLAT.
FRI
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
SAT
S WINDS 5 TO 10 KT. WAVES 1 FT.
ANZ531-172000-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
1129 AM EDT TUE MAR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
REST OF TODAY
W WINDS 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT. A
SLIGHT CHANCE OF SNOW SHOWERS THIS AFTERNOON WITH VSBY 1 TO 3 NM.
TONIGHT...NW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT
DIMINISHING
TO 5 TO 10 KT LATE. WAVES 2 TO 3 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 TO 10 KT. WAVES 1 FT.
THU NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
FRI
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
SAT
S WINDS 10 TO 15 KT. WAVES 1 FT.
ANZ538-172000-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
1129 AM EDT TUE MAR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING
REST OF TODAY
W WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 1 TO 2 FT.
A SLIGHT CHANCE OF SNOW SHOWERS THIS AFTERNOON WITH VSBY 1 TO 3 NM.
TONIGHT
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 FLAT.
THU
S WINDS 5 KT. WAVES FLAT.
THU NIGHT
S WINDS AROUND 5 KT. WAVES FLAT.
FRI
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
SAT
S WINDS 5 TO 10 KT. WAVES 1 FT.
ANZ539-172000-
CHESTER RIVER TO QUEENSTOWN MD-
1129 AM EDT TUE MAR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
REST OF TODAY
W WINDS 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT. A
SLIGHT CHANCE OF SNOW SHOWERS THIS AFTERNOON WITH VSBY 1 TO 3 NM.
TONIGHT...NW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT
DIMINISHING
TO 10 KT LATE. WAVES 2 TO 3 FT.
WED
NW 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 OR LESS.
SAT
S WINDS 5 TO 10 KT. WAVES 1 FT.
ANZ532-172000-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
1129 AM EDT TUE MAR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
REST OF TODAY
W WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO
3 FT. A SLIGHT CHANCE OF SNOW SHOWERS THIS AFTERNOON WITH VSBY 1 TO
3 NM.
TONIGHT...NW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT
DIMINISHING
TO 10 KT LATE. 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 5 TO 10 KT. WAVES 1 FT.
SAT
S WINDS 10 TO 15 KT. WAVES 2 FT.
ANZ540-172000-
EASTERN BAY-
1129 AM EDT TUE MAR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
REST OF TODAY
W WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES
2 FT. A SLIGHT CHANCE OF SNOW SHOWERS THIS AFTERNOON WITH VSBY 1 TO
3 NM.
TONIGHT...NW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT
DIMINISHING
TO 10 KT LATE. WAVES 2 FT.
WED...N WINDS 5 TO 10 KT
BECOMING SW LATE. 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.
THU NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
FRI
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
SAT
S WINDS 5 TO 10 KT. WAVES 1 FT.
ANZ533-172000-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
1129 AM EDT TUE MAR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
REST OF TODAY
W WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO
3 FT. A SLIGHT CHANCE OF SNOW SHOWERS THIS AFTERNOON WITH VSBY 1 TO
3 NM.
TONIGHT
NW WINDS 15 TO 20 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 5 TO 10 KT. WAVES 1 FT.
SAT
S WINDS 10 TO 15 KT. WAVES 2 FT.
ANZ541-172000-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
1129 AM EDT TUE MAR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
REST OF TODAY
W WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES
2 FT. A SLIGHT CHANCE OF SNOW SHOWERS THIS AFTERNOON WITH VSBY 1 TO
3 NM.
TONIGHT...NW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT
DIMINISHING
TO 10 KT LATE. WAVES 2 FT.
WED...NE WINDS 5 TO 10 KT
BECOMING S LATE. 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 TO 10 KT. WAVES 1 FT.
FRI
S WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
ANZ542-172000-
PATUXENT RIVER TO BROOMES ISLAND MD-
1129 AM EDT TUE MAR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
REST OF TODAY
W WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A
SLIGHT CHANCE OF SNOW SHOWERS THIS AFTERNOON WITH VSBY 1 TO 3 NM.
TONIGHT
NW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT UNTIL EARLY
MORNING. WAVES 1 FT. A CHANCE OF SNOW.
WED
NE WINDS 5 KT. WAVES LESS THAN 1 FT.
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 AROUND 5 KT. WAVES 1 FT.
SAT
S WINDS 5 TO 10 KT. WAVES 1 FT.
ANZ534-172000-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
1129 AM EDT TUE MAR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
REST OF TODAY
NW WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 2 TO
3 FT. A SLIGHT CHANCE OF SNOW SHOWERS THIS AFTERNOON WITH VSBY 1 TO
3 NM.
TONIGHT
NW WINDS 15 TO 20 KT. WAVES 2 TO 3 FT. A CHANCE OF SNOW.
WED...N WINDS 10 TO 15 KT
BECOMING SE 5 KT IN THE AFTERNOON.
WAVES 1 TO 2 FT.
WED NIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
THU
SE WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
S WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
SAT
S WINDS 10 TO 15 KT. WAVES 2 FT.
ANZ543-172000-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
1129 AM EDT TUE MAR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
REST OF TODAY
NW WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. A SLIGHT CHANCE OF SNOW SHOWERS THIS AFTERNOON WITH VSBY 1 TO
3 NM.
TONIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A
CHANCE OF SNOW.
WED...N WINDS 10 TO 15 KT
BECOMING SE 5 KT IN THE AFTERNOON.
WAVES 1 FT.
WED NIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
THU
SE WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
S WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page