663
FZUS51 KLWX 280259
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1059 PM EDT MON APR 27 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.
ANZ500-280800-
1059 PM EDT MON APR 27 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
HIGH PRESSURE WILL BUILD TO THE NORTH BEFORE ANOTHER FRONTAL SYSTEM
APPROACHES FROM THE WEST BY THE MIDDLE OF THE WEEK. A TROUGH OF LOW
PRESSURE LINGERS THROUGH FRIDAY. SMALL CRAFT ADVISORIES ARE LIKELY
NEEDED WEDNESDAY AFTERNOON DUE TO INCREASING SOUTHEASTERLY WINDS.
HAZARDOUS MARINE CONDITIONS LIKELY PERSIST THROUGH THE LATE WEEK
TIMEFRAME.
ANZ535-280800-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
1059 PM EDT MON APR 27 2026
REST OF TONIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
TUE NIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
WED
SE WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
WAVES 1 FT. SHOWERS.
WED NIGHT...S WINDS 5 TO 10 KT
BECOMING NW 10 TO 15 KT WITH GUSTS
TO 25 KT AFTER MIDNIGHT. WAVES 1 FT. SHOWERS.
THU
NW WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 1 FT.
THU NIGHT
NW WINDS 10 TO 15 KT. GUSTS UP TO 25 KT IN THE EVENING.
WAVES 1 FT.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS THROUGH
THE NIGHT.
SAT...N WINDS 10 TO 15 KT
BECOMING NW 5 KT AFTER MIDNIGHT. WAVES
1 FT. A CHANCE OF SHOWERS.
ANZ536-280800-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
1059 PM EDT MON APR 27 2026
REST OF TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
TUE NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
WED
SE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS.
WED NIGHT...S WINDS 10 KT
BECOMING NW AFTER MIDNIGHT. GUSTS UP TO
20 KT. WAVES 1 TO 2 FT. SHOWERS.
THU
NW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
THU NIGHT...NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
DIMINISHING
TO 5 KT AFTER MIDNIGHT. WAVES 1 TO 2 FT.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS THROUGH
THE NIGHT.
SAT
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
ANZ537-280800-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
1059 PM EDT MON APR 27 2026
REST OF TONIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
SE WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
WED
SE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
SHOWERS.
WED NIGHT...S WINDS 10 TO 15 KT
BECOMING W 15 TO 20 KT AFTER
MIDNIGHT. WAVES 2 FT. SHOWERS.
THU
NW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT.
FRI...W WINDS 5 TO 10 KT
BECOMING S IN THE EVENING, THEN BECOMING
NW AFTER MIDNIGHT. WAVES 1 FT. A CHANCE OF SHOWERS THROUGH THE
NIGHT.
SAT
N WINDS 5 TO 10 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
ANZ530-280800-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
1059 PM EDT MON APR 27 2026
REST OF TONIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE
S WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
WED
SE WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
WAVES 1 FT. SHOWERS.
WED NIGHT...SE WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. GUSTS
UP TO 20 KT. WAVES 1 FT. SHOWERS.
THU
NW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT.
FRI...NW WINDS 10 TO 15 KT
DIMINISHING TO 5 KT AFTER MIDNIGHT.
WAVES 1 FT OR LESS. A CHANCE OF SHOWERS THROUGH THE NIGHT.
SAT
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
ANZ531-280800-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
1059 PM EDT MON APR 27 2026
REST OF TONIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
S WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
WED
SE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
SHOWERS.
WED NIGHT...SE WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. GUSTS
UP TO 20 KT. WAVES 2 FT. SHOWERS.
THU
NW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
THU NIGHT
NW WINDS 10 TO 15 KT. GUSTS UP TO 25 KT IN THE EVENING.
WAVES 2 FT.
FRI
NW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS
THROUGH THE NIGHT.
SAT
N WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
ANZ538-280800-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
1059 PM EDT MON APR 27 2026
REST OF TONIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
S WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WED...SE WINDS 5 KT
INCREASING TO 10 TO 15 KT IN THE AFTERNOON.
GUSTS UP TO 20 KT. WAVES 1 FT. SHOWERS.
WED NIGHT...SE WINDS 5 TO 10 KT
BECOMING W 10 TO 15 KT AFTER
MIDNIGHT. GUSTS UP TO 20 KT. WAVES 1 FT. SHOWERS.
THU
NW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT.
THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
FRI...NW WINDS 10 TO 15 KT
DIMINISHING TO 5 KT AFTER MIDNIGHT.
WAVES 1 FT OR LESS. A CHANCE OF SHOWERS THROUGH THE NIGHT.
SAT...N WINDS 10 TO 15 KT
BECOMING NW 5 KT AFTER MIDNIGHT. WAVES
1 FT. A CHANCE OF SHOWERS.
ANZ539-280800-
CHESTER RIVER TO QUEENSTOWN MD-
1059 PM EDT MON APR 27 2026
REST OF TONIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
TUE NIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
WED...SE WINDS 5 KT
INCREASING TO 10 TO 15 KT WITH GUSTS TO 20 KT
IN THE AFTERNOON. WAVES 1 FT. SHOWERS.
WED NIGHT...SE WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. GUSTS
UP TO 20 KT. WAVES 1 TO 2 FT. SHOWERS WITH A CHANCE OF TSTMS.
THU
NW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS
THROUGH THE NIGHT.
SAT
N WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ532-280800-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
1059 PM EDT MON APR 27 2026
REST OF TONIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
S WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
WED...SE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT
BUILDING TO 3 FT IN THE AFTERNOON. SHOWERS.
WED NIGHT...S WINDS 15 TO 20 KT
BECOMING W 10 TO 15 KT AFTER
MIDNIGHT. WAVES 2 TO 3 FT. SHOWERS.
THU
NW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
THU NIGHT
NW WINDS 15 TO 20 KT. WAVES 2 FT.
FRI...NW WINDS 10 TO 15 KT
BECOMING N 5 TO 10 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT. A CHANCE OF SHOWERS THROUGH THE NIGHT.
SAT
N WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
ANZ540-280800-
EASTERN BAY-
1059 PM EDT MON APR 27 2026
REST OF TONIGHT
SE WINDS AROUND 5 KT. WAVES FLAT.
TUE
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
TUE NIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
WED
SE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SHOWERS.
WED NIGHT...SE WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. GUSTS
UP TO 20 KT. WAVES 1 FT. SHOWERS WITH A CHANCE OF TSTMS.
THU
NW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS THROUGH
THE NIGHT.
SAT
N WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ533-280800-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
1059 PM EDT MON APR 27 2026
REST OF TONIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
S WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
TUE NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
WED...SE WINDS 5 TO 10 KT
INCREASING TO 15 TO 20 KT IN THE
AFTERNOON. WAVES 1 FT...BUILDING TO 3 FT IN THE AFTERNOON. SHOWERS.
WED NIGHT...S WINDS 15 TO 20 KT
BECOMING W AFTER MIDNIGHT. WAVES
2 TO 3 FT. SHOWERS.
THU
NW WINDS 20 TO 25 KT. WAVES 3 FT.
THU NIGHT
NW WINDS 15 TO 20 KT. WAVES 2 TO 3 FT.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS THROUGH
THE NIGHT.
SAT...N WINDS 10 TO 15 KT
BECOMING NW AFTER MIDNIGHT. WAVES 1 TO
2 FT. A CHANCE OF SHOWERS.
ANZ541-280800-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
1059 PM EDT MON APR 27 2026
REST OF TONIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE
S WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
WED
SE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
SHOWERS.
WED NIGHT...S WINDS 10 TO 15 KT
BECOMING W 15 TO 20 KT AFTER
MIDNIGHT. WAVES 2 FT. SHOWERS.
THU
NW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
THU NIGHT
NW WINDS 15 TO 20 KT. WAVES 2 FT.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS THROUGH
THE NIGHT.
SAT...N WINDS 10 TO 15 KT
BECOMING NW AFTER MIDNIGHT. WAVES 1 TO
2 FT. A CHANCE OF SHOWERS.
ANZ542-280800-
PATUXENT RIVER TO BROOMES ISLAND MD-
1059 PM EDT MON APR 27 2026
REST OF TONIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
SE WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
WED
SE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SHOWERS.
WED NIGHT...S WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. GUSTS
UP TO 20 KT. WAVES 1 FT. SHOWERS.
THU
NW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 1 FT.
THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS THROUGH
THE NIGHT.
SAT
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
ANZ534-280800-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
1059 PM EDT MON APR 27 2026
REST OF TONIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
SE WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
TUE NIGHT
SE WINDS 10 KT. WAVES 2 FT.
WED
SE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 TO 3 FT.
SHOWERS.
WED NIGHT...S WINDS 15 TO 20 KT
BECOMING W AFTER MIDNIGHT. GUSTS
UP TO 25 KT. WAVES 3 FT. SHOWERS.
THU
NW WINDS 20 TO 25 KT. WAVES 4 FT.
THU NIGHT
NW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
FRI...W WINDS 10 TO 15 KT
BECOMING S 5 TO 10 KT IN THE EVENING,
THEN BECOMING NW AFTER MIDNIGHT. WAVES 1 TO 2 FT. A CHANCE OF
SHOWERS THROUGH THE NIGHT.
SAT
N WINDS 10 TO 15 KT. WAVES 2 FT. A CHANCE OF SHOWERS.
ANZ543-280800-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
1059 PM EDT MON APR 27 2026
REST OF TONIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
SE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TUE NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
WED
SE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
SHOWERS.
WED NIGHT...SE WINDS 15 TO 20 KT
BECOMING W AFTER MIDNIGHT. GUSTS
UP TO 25 KT. WAVES 2 FT. SHOWERS.
THU
NW WINDS 20 TO 25 KT. WAVES 2 FT.
THU NIGHT
NW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
FRI...NW WINDS 10 TO 15 KT
BECOMING SW 5 TO 10 KT IN THE EVENING,
THEN BECOMING NW AFTER MIDNIGHT. WAVES 1 FT. A CHANCE OF SHOWERS
THROUGH THE NIGHT.
SAT
N WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
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