273
FZUS51 KLWX 200857
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
457 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.
ANZ500-202300-
457 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.
ANZ535-202300-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
457 AM EDT FRI MAR 20 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
REST OF THE OVERNIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY...S WINDS AROUND 5 KT
BECOMING SW 10 TO 15 KT WITH GUSTS TO
25 KT IN THE AFTERNOON. WAVES 1 FT.
TONIGHT...SW WINDS 10 TO 15 KT WITH GUSTS TO 20 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.
ANZ536-202300-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
457 AM EDT FRI MAR 20 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
REST OF THE OVERNIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
TONIGHT...SW WINDS 10 TO 15 KT
BECOMING W 5 TO 10 KT LATE. GUSTS
UP TO 20 KT. WAVES 1 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.
ANZ537-202300-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
457 AM EDT FRI MAR 20 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
REST OF THE OVERNIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
TONIGHT...SW WINDS 10 TO 15 KT
BECOMING W LATE. GUSTS UP TO
20 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.
ANZ530-202300-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
457 AM EDT FRI MAR 20 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
REST OF THE OVERNIGHT
SW WINDS 5 KT. WAVES FLAT.
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 20 KT
BECOMING W
5 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 FLAT.
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 OR LESS.
ANZ531-202300-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
457 AM EDT FRI MAR 20 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
REST OF THE OVERNIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
TONIGHT...SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
BECOMING W
5 TO 10 KT LATE. WAVES 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...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.
ANZ538-202300-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
457 AM EDT FRI MAR 20 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
REST OF THE OVERNIGHT
S WINDS 5 KT. WAVES FLAT.
TODAY
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT OR
LESS.
TONIGHT
SW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE EVENING.
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.
ANZ539-202300-
CHESTER RIVER TO QUEENSTOWN MD-
457 AM EDT FRI MAR 20 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
REST OF THE OVERNIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
TONIGHT...SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
BECOMING W
5 TO 10 KT LATE. WAVES 1 TO 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 TO 2 FT.
ANZ532-202300-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
457 AM EDT FRI MAR 20 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
REST OF THE OVERNIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY...S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT
BUILDING TO 3 FT IN THE AFTERNOON.
TONIGHT...SW WINDS 10 TO 15 KT
BECOMING W LATE. GUSTS UP TO
20 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 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.
ANZ540-202300-
EASTERN BAY-
457 AM EDT FRI MAR 20 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
REST OF THE OVERNIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
TONIGHT...SW WINDS 10 TO 15 KT
BECOMING W LATE. GUSTS UP TO
20 KT. 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 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.
ANZ533-202300-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
457 AM EDT FRI MAR 20 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
REST OF THE OVERNIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
S WINDS 15 TO 20 KT. WAVES 1 TO 2 FT.
TONIGHT...S WINDS 15 TO 20 KT
BECOMING W 10 TO 15 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 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.
ANZ541-202300-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
457 AM EDT FRI MAR 20 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
REST OF THE OVERNIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
S WINDS 15 TO 20 KT. WAVES 1 TO 2 FT.
TONIGHT...S WINDS 15 TO 20 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.
ANZ542-202300-
PATUXENT RIVER TO BROOMES ISLAND MD-
457 AM EDT FRI MAR 20 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
REST OF THE OVERNIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY...S WINDS 5 KT
INCREASING TO 10 TO 15 KT WITH GUSTS TO
20 KT IN THE AFTERNOON. WAVES 1 FT.
TONIGHT
SW WINDS 5 TO 10 KT. 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.
ANZ534-202300-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
457 AM EDT FRI MAR 20 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
REST OF THE OVERNIGHT
SW WINDS 10 KT. WAVES 1 FT.
TODAY...S WINDS 15 TO 20 KT. WAVES 1 FT
BUILDING TO 3 FT IN THE
AFTERNOON.
TONIGHT...S WINDS 15 TO 20 KT
BECOMING SW 10 TO 15 KT LATE. WAVES
3 FT. SHOWERS LIKELY.
SAT
NW WINDS 10 TO 15 KT. 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.
ANZ543-202300-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
457 AM EDT FRI MAR 20 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
REST OF THE OVERNIGHT
SW WINDS 10 KT. WAVES 1 FT.
TODAY
S WINDS 15 TO 20 KT. WAVES 1 TO 2 FT.
TONIGHT...S WINDS 15 TO 20 KT
BECOMING SW 10 TO 15 KT LATE. WAVES
2 FT. SHOWERS LIKELY.
SAT
NW 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
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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