987
FZUS51 KLWX 201459
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1059 AM EDT FRI MAR 20 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.
ANZ500-202000-
1059 AM EDT FRI MAR 20 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
HIGH PRESSURE WILL REMAIN IN PLACE THROUGH THIS AFTERNOON BEFORE A
QUICK MOVING CLIPPER SYSTEM TRACKS ACROSS THE WATERS BY TO NIGHT.
ANOTHER COLD FRONT PUSHES THROUGH THE REGION LATE IN THE WEEKEND
BEFORE HIGH PRESSURE APPROACHES FROM THE WEST EARLY NEXT WEEK. SMALL
CRAFT ADVISORIES MAY BE NEEDED SATURDAY, AND AGAIN SUNDAY INTO
MONDAY.
ANZ535-202000-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
1059 AM EDT FRI MAR 20 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
REST OF TODAY...S WINDS 5 TO 10 KT WITH GUSTS TO 25 KT
BECOMING
SW 15 KT WITH GUSTS TO 25 KT LATE. WAVES 1 TO 2 FT.
TONIGHT...SW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT
BECOMING W
5 KT LATE. WAVES 1 FT. SHOWERS LIKELY.
SAT
N WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT
SE WINDS AROUND 5 KT. WAVES 1 FT.
SUN
S WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
SW WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A
CHANCE OF RAIN.
MON
NW WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF RAIN THROUGH
THE DAY.
TUE
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
ANZ536-202000-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
1059 AM EDT FRI MAR 20 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
REST OF TODAY...S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT
INCREASING TO 25 KT LATE. WAVES 1 TO 2 FT.
TONIGHT...SW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT
BECOMING W
5 TO 10 KT LATE. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
SAT
N WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
SUN
S WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A
CHANCE OF RAIN.
MON
NW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF RAIN
THROUGH THE DAY.
TUE...N WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT.
ANZ537-202000-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
1059 AM EDT FRI MAR 20 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
REST OF TODAY...S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT
INCREASING TO 25 KT LATE. WAVES 1 TO 2 FT.
TONIGHT...SW WINDS 10 TO 15 KT
BECOMING W LATE. GUSTS UP TO
25 KT. WAVES 2 FT. SHOWERS LIKELY.
SAT
N WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
SUN
S WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
SW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
MON...NW WINDS 15 TO 20 KT
BECOMING N. WAVES 2 FT. A CHANCE OF
RAIN THROUGH THE DAY.
TUE...N WINDS 10 TO 15 KT
BECOMING NE 5 KT IN THE AFTERNOON, THEN
BECOMING S. WAVES 1 TO 2 FT.
ANZ530-202000-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
1059 AM EDT FRI MAR 20 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
REST OF TODAY...S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT
INCREASING TO 25 KT LATE. WAVES 1 TO 2 FT.
TONIGHT...SW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT
BECOMING W
5 KT LATE. WAVES 1 TO 2 FT. SHOWERS LIKELY.
SAT
N WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT
E WINDS AROUND 5 KT. WAVES 1 FT.
SUN
S WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
SW WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF RAIN.
MON
NW WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF RAIN THROUGH
THE DAY.
TUE...NW WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT.
ANZ531-202000-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
1059 AM EDT FRI MAR 20 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
REST OF TODAY
S WINDS 10 TO 15 KT. GUSTS UP TO 25 KT THIS
AFTERNOON. WAVES 1 TO 2 FT...BUILDING TO 3 FT LATE.
TONIGHT...SW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT
BECOMING W
5 TO 10 KT LATE. WAVES 2 TO 3 FT. SHOWERS LIKELY.
SAT
N WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT
E WINDS AROUND 5 KT. WAVES 1 FT.
SUN
S WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT...S WINDS 10 TO 15 KT
BECOMING SW AFTER MIDNIGHT. GUSTS
UP TO 20 KT. WAVES 2 FT. A CHANCE OF RAIN.
MON
NW WINDS 15 TO 20 KT. WAVES 2 FT. A CHANCE OF RAIN THROUGH
THE DAY.
TUE...N WINDS 10 TO 15 KT
BECOMING NW 5 KT IN THE AFTERNOON, THEN
BECOMING S. WAVES 1 TO 2 FT.
ANZ538-202000-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
1059 AM EDT FRI MAR 20 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
REST OF TODAY...S WINDS 5 TO 10 KT WITH GUSTS TO 20 KT
INCREASING TO 15 KT WITH GUSTS TO 20 KT LATE. WAVES 1 FT OR LESS.
TONIGHT...SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
BECOMING NW
5 KT LATE. WAVES 1 FT. SHOWERS LIKELY.
SAT
N WINDS 5 KT. WAVES LESS THAN 1 FT.
SAT NIGHT
E WINDS 5 KT. WAVES FLAT.
SUN
S WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF RAIN.
MON
NW WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF RAIN THROUGH
THE DAY.
TUE...NW WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT OR LESS.
ANZ539-202000-
CHESTER RIVER TO QUEENSTOWN MD-
1059 AM EDT FRI MAR 20 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
REST OF TODAY
S WINDS 10 TO 15 KT. GUSTS UP TO 25 KT THIS
AFTERNOON. WAVES 1 TO 2 FT.
TONIGHT...S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT
BECOMING SW
5 TO 10 KT WITH GUSTS TO 20 KT AFTER MIDNIGHT. WAVES 2 FT. SHOWERS
LIKELY.
SAT
N WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT
E WINDS 5 KT. WAVES FLAT.
SUN
S WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT...S WINDS 10 TO 15 KT
BECOMING SW AFTER MIDNIGHT. GUSTS
UP TO 20 KT. WAVES 1 TO 2 FT. A CHANCE OF RAIN.
MON
NW WINDS 10 TO 15 KT. WAVES 2 FT. A CHANCE OF RAIN THROUGH
THE DAY.
TUE...N WINDS 10 TO 15 KT
BECOMING W 5 KT IN THE AFTERNOON, THEN
BECOMING S. WAVES 1 FT.
ANZ532-202000-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
1059 AM EDT FRI MAR 20 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
REST OF TODAY...S WINDS 10 TO 15 KT WITH GUSTS TO 25 KT
INCREASING TO 20 KT WITH GUSTS TO 25 KT LATE. WAVES 1 TO 2 FT...
BUILDING TO 3 FT LATE.
TONIGHT...S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT
BECOMING W
10 KT LATE. WAVES 2 TO 3 FT. SHOWERS LIKELY.
SAT
N WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT.
SUN
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
SUN NIGHT...S WINDS 10 TO 15 KT
BECOMING SW 15 TO 20 KT AFTER
MIDNIGHT. WAVES 2 FT. A CHANCE OF RAIN.
MON
NW WINDS 15 TO 20 KT. WAVES 2 TO 3 FT. A CHANCE OF RAIN
THROUGH THE DAY.
TUE...N WINDS 10 TO 15 KT
BECOMING NE 5 KT IN THE AFTERNOON, THEN
BECOMING S. WAVES 1 TO 2 FT.
ANZ540-202000-
EASTERN BAY-
1059 AM EDT FRI MAR 20 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
REST OF TODAY
S WINDS 10 TO 15 KT. GUSTS UP TO 25 KT THIS
AFTERNOON. WAVES 1 TO 2 FT.
TONIGHT...S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT
BECOMING SW
10 KT WITH GUSTS TO 20 KT AFTER MIDNIGHT. WAVES 2 FT. SHOWERS
LIKELY.
SAT
N WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT
E WINDS AROUND 5 KT. WAVES FLAT.
SUN
S WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT...S WINDS 10 TO 15 KT
BECOMING SW AFTER MIDNIGHT. GUSTS
UP TO 20 KT. WAVES 1 TO 2 FT. A CHANCE OF RAIN.
MON
N WINDS 15 TO 20 KT. WAVES 1 TO 2 FT. A CHANCE OF RAIN
THROUGH THE DAY.
TUE...N WINDS 10 TO 15 KT
DIMINISHING TO 5 KT IN THE AFTERNOON,
THEN BECOMING S. WAVES 1 FT.
ANZ533-202000-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
1059 AM EDT FRI MAR 20 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
REST OF TODAY...S WINDS 10 TO 15 KT WITH GUSTS TO 25 KT
INCREASING TO 20 KT WITH GUSTS TO 25 KT LATE. WAVES 1 TO 2 FT...
BUILDING TO 3 FT LATE.
TONIGHT...S WINDS 15 TO 20 KT
BECOMING W 10 TO 15 KT LATE. GUSTS
UP TO 25 KT. WAVES 2 TO 3 FT. SHOWERS LIKELY.
SAT
N WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT.
SUN
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
SUN NIGHT...S WINDS 10 TO 15 KT
BECOMING SW 15 TO 20 KT AFTER
MIDNIGHT. WAVES 2 FT. A CHANCE OF RAIN.
MON
NW WINDS 15 TO 20 KT. WAVES 3 FT. A CHANCE OF RAIN THROUGH
THE DAY.
TUE...N WINDS 10 TO 15 KT
BECOMING NE 5 TO 10 KT IN THE
AFTERNOON, THEN BECOMING S. WAVES 1 TO 2 FT.
ANZ541-202000-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
1059 AM EDT FRI MAR 20 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
REST OF TODAY...S WINDS 10 TO 15 KT WITH GUSTS TO 25 KT
INCREASING TO 20 KT WITH GUSTS TO 25 KT LATE. WAVES 1 TO 2 FT.
TONIGHT...S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT
BECOMING W
10 KT LATE. WAVES 2 FT. SHOWERS LIKELY.
SAT
N WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT.
SUN
S WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT...S WINDS 10 TO 15 KT
BECOMING SW 15 TO 20 KT AFTER
MIDNIGHT. WAVES 2 FT. A CHANCE OF RAIN.
MON
NW WINDS 15 TO 20 KT. WAVES 2 FT. A CHANCE OF RAIN THROUGH
THE DAY.
TUE...N WINDS 10 TO 15 KT
BECOMING S 5 TO 10 KT. WAVES 1 TO 2 FT.
ANZ542-202000-
PATUXENT RIVER TO BROOMES ISLAND MD-
1059 AM EDT FRI MAR 20 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
REST OF TODAY
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES
1 FT.
TONIGHT...SW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT
BECOMING W
5 TO 10 KT LATE. WAVES 1 FT. SHOWERS LIKELY.
SAT
N WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT
E WINDS AROUND 5 KT. WAVES 1 FT.
SUN
S WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A
CHANCE OF RAIN.
MON
NW WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF RAIN THROUGH
THE DAY.
TUE...N WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT.
ANZ534-202000-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
1059 AM EDT FRI MAR 20 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
REST OF TODAY
S WINDS 15 TO 20 KT. GUSTS UP TO 25 KT THIS
AFTERNOON. WAVES 2 TO 3 FT...BUILDING TO 4 FT LATE.
TONIGHT...S WINDS 15 TO 20 KT
BECOMING SW 10 TO 15 KT LATE. GUSTS
UP TO 25 KT. WAVES 3 FT. SHOWERS LIKELY.
SAT...NW WINDS 10 TO 15 KT
BECOMING N 5 TO 10 KT LATE. WAVES 1 TO
2 FT.
SAT NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT.
SUN
S WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
SUN NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
MON...NW WINDS 15 TO 20 KT
BECOMING N. WAVES 3 FT. A CHANCE OF
RAIN THROUGH THE DAY.
TUE...N WINDS 15 TO 20 KT
DIMINISHING TO 5 TO 10 KT IN THE
AFTERNOON, THEN BECOMING S 10 TO 15 KT. WAVES 3 FT... SUBSIDING TO
1 TO 2 FT.
ANZ543-202000-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
1059 AM EDT FRI MAR 20 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
REST OF TODAY
S WINDS 15 TO 20 KT. GUSTS UP TO 25 KT THIS
AFTERNOON. WAVES 1 TO 2 FT...BUILDING TO 3 FT LATE.
TONIGHT...S WINDS 15 TO 20 KT
BECOMING SW 10 TO 15 KT LATE. GUSTS
UP TO 25 KT. WAVES 2 TO 3 FT. SHOWERS LIKELY.
SAT
NW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT UNTIL LATE AFTERNOON.
WAVES 1 FT.
SAT NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT.
SUN
S WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT.
MON...W WINDS 15 TO 20 KT
BECOMING N. WAVES 2 FT. A CHANCE OF
RAIN THROUGH THE DAY.
TUE...N WINDS 15 TO 20 KT
DIMINISHING TO 5 TO 10 KT IN THE
AFTERNOON, THEN BECOMING S. WAVES 1 TO 2 FT.
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