489
FZUS51 KLWX 242057
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
457 PM EDT MON AUG 24 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.
ANZ500-250800-
457 PM EDT MON AUG 24 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
HIGH PRESSURE WILL GRADUALLY BUILD TOWARD THE WATERS FROM THE WEST
THROUGH TUESDAY, BEFORE SHIFTING OFFSHORE BY MID-WEEK. A COLD FRONT
IS EXPECTED TO CROSS THE AREA BY LATE THURSDAY NIGHT. HIGH PRESSURE
EVENTUALLY APPROACHES FROM THE GREAT LAKES BY LATE IN THE WEEK.
WINDS MAY NEAR LOW-END SMALL CRAFT ADVISORY LEVELS IN SOUTHERLY FLOW
ON WEDNESDAY AFTERNOON INTO THE NIGHT, POSSIBLY AGAIN DURING PARTS
OF THURSDAY.
ANZ535-250800-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
457 PM EDT MON AUG 24 2026
REST OF THIS AFTERNOON
W WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT.
TUE
NW WINDS AROUND 5 KT. WAVES 1 FT.
TUE NIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED
SE WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
THU
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF TSTMS.
FRI
NW WINDS AROUND 5 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ536-250800-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
457 PM EDT MON AUG 24 2026
REST OF THIS AFTERNOON
W WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE NIGHT
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED
S WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
THU
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS IN THE
MORNING, THEN SHOWERS WITH A CHANCE OF TSTMS THROUGH THE NIGHT. A
CHANCE OF SHOWERS AFTER MIDNIGHT.
FRI
W WINDS AROUND 5 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ537-250800-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
457 PM EDT MON AUG 24 2026
REST OF THIS AFTERNOON
NW WINDS 5 KT. WAVES FLAT.
TONIGHT
N WINDS 5 TO 10 KT. GUSTS UP TO 20 KT AFTER MIDNIGHT.
WAVES 1 FT.
TUE
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
W WINDS AROUND 5 KT. WAVES FLAT.
WED...SW WINDS AROUND 5 KT
BECOMING S 10 TO 15 KT WITH GUSTS TO
20 KT IN THE AFTERNOON. WAVES FLAT... BUILDING TO 2 FT IN THE
AFTERNOON.
WED NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A
CHANCE OF SHOWERS.
THU
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY THROUGH THE
DAY. A CHANCE OF TSTMS. A CHANCE OF SHOWERS THROUGH THE NIGHT.
FRI
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
AND TSTMS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ530-250800-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
457 PM EDT MON AUG 24 2026
REST OF THIS AFTERNOON
W WINDS 10 KT. WAVES 1 FT.
TONIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT.
WED
SE WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
THU
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF TSTMS. SHOWERS.
FRI
NW WINDS AROUND 5 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ531-250800-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
457 PM EDT MON AUG 24 2026
REST OF THIS AFTERNOON
W WINDS 10 KT. WAVES 1 FT.
TONIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
W WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED...NE WINDS AROUND 5 KT
BECOMING S IN THE AFTERNOON. WAVES
1 FT OR LESS.
WED NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A
CHANCE OF SHOWERS.
THU...S WINDS 10 TO 15 KT
BECOMING SW 5 KT AFTER MIDNIGHT. WAVES
1 TO 2 FT. A CHANCE OF TSTMS.
FRI
W WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ538-250800-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
457 PM EDT MON AUG 24 2026
REST OF THIS AFTERNOON
W WINDS 10 KT. WAVES 1 FT.
TONIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TUE
W WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TUE NIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED...NE WINDS AROUND 5 KT
BECOMING SE IN THE AFTERNOON. WAVES
1 FT OR LESS.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
THU
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF TSTMS.
FRI
W WINDS AROUND 5 KT. WAVES FLAT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ539-250800-
CHESTER RIVER TO QUEENSTOWN MD-
457 PM EDT MON AUG 24 2026
REST OF THIS AFTERNOON
W WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE NIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED...E WINDS AROUND 5 KT
BECOMING S IN THE AFTERNOON. WAVES 1 FT
OR LESS.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
THU
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF TSTMS. SHOWERS.
FRI
W WINDS AROUND 5 KT. WAVES FLAT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ532-250800-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
457 PM EDT MON AUG 24 2026
REST OF THIS AFTERNOON
W WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE...NW WINDS 5 TO 10 KT
BECOMING S LATE. WAVES 1 FT.
TUE NIGHT
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED...NE WINDS 5 KT
BECOMING S 10 TO 15 KT WITH GUSTS TO 20 KT IN
THE AFTERNOON. WAVES FLAT...BUILDING TO 2 FT IN THE AFTERNOON.
WED NIGHT
S WINDS 15 TO 20 KT. WAVES 3 FT. A CHANCE OF SHOWERS.
THU
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF TSTMS.
FRI
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ540-250800-
EASTERN BAY-
457 PM EDT MON AUG 24 2026
REST OF THIS AFTERNOON
W WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE...NW WINDS 5 TO 10 KT
BECOMING SW LATE. WAVES 1 FT.
TUE NIGHT
W WINDS AROUND 5 KT. WAVES FLAT.
WED...E WINDS AROUND 5 KT
BECOMING S IN THE AFTERNOON. WAVES 1 FT
OR LESS.
WED NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A
CHANCE OF SHOWERS.
THU
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF TSTMS. SHOWERS.
FRI
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ533-250800-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
457 PM EDT MON AUG 24 2026
REST OF THIS AFTERNOON
W WINDS 5 KT. WAVES FLAT.
TONIGHT
N WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
TUE...NW WINDS 5 TO 10 KT
BECOMING S LATE. WAVES 1 FT.
TUE NIGHT
W WINDS AROUND 5 KT. WAVES FLAT.
WED...N WINDS 5 KT
BECOMING S 10 TO 15 KT WITH GUSTS TO 20 KT IN
THE AFTERNOON. WAVES FLAT...BUILDING TO 2 FT IN THE AFTERNOON.
WED NIGHT
S WINDS 15 TO 20 KT. WAVES 3 FT. A CHANCE OF SHOWERS.
THU
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. SHOWERS WITH A CHANCE
OF TSTMS.
FRI
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ541-250800-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
457 PM EDT MON AUG 24 2026
REST OF THIS AFTERNOON
W WINDS 5 KT. WAVES FLAT.
TONIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT.
TUE...NW WINDS 5 TO 10 KT
BECOMING SW LATE. WAVES 1 FT.
TUE NIGHT
W WINDS AROUND 5 KT. WAVES FLAT.
WED...NE WINDS AROUND 5 KT
BECOMING S 10 TO 15 KT IN THE
AFTERNOON. WAVES 1 FT OR LESS.
WED NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A
CHANCE OF SHOWERS.
THU
S WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF TSTMS.
FRI
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ542-250800-
PATUXENT RIVER TO BROOMES ISLAND MD-
457 PM EDT MON AUG 24 2026
REST OF THIS AFTERNOON
W WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
N WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE NIGHT
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED...NW WINDS AROUND 5 KT
BECOMING S IN THE AFTERNOON. WAVES
1 FT.
WED NIGHT
S WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A
CHANCE OF SHOWERS.
THU
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE OF
TSTMS.
FRI
W WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS THROUGH
THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ534-250800-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
457 PM EDT MON AUG 24 2026
REST OF THIS AFTERNOON
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT...E WINDS 5 TO 10 KT
BECOMING N 10 TO 15 KT WITH GUSTS TO
20 KT AFTER MIDNIGHT. WAVES 1 TO 2 FT.
TUE
NW WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
TUE NIGHT
W WINDS AROUND 5 KT. WAVES FLAT.
WED...NW WINDS AROUND 5 KT
BECOMING S 10 TO 15 KT WITH GUSTS TO
20 KT IN THE AFTERNOON. WAVES FLAT... BUILDING TO 2 FT IN THE
AFTERNOON.
WED NIGHT
S WINDS 15 TO 20 KT. WAVES 3 FT. A CHANCE OF SHOWERS.
THU
S WINDS 10 TO 15 KT. WAVES 2 FT. SHOWERS LIKELY WITH A CHANCE
OF TSTMS.
FRI
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS. A
CHANCE OF TSTMS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ543-250800-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
457 PM EDT MON AUG 24 2026
REST OF THIS AFTERNOON
W WINDS 5 KT. WAVES FLAT.
TONIGHT...SE WINDS 5 KT
BECOMING N AFTER MIDNIGHT. WAVES 1 FT OR
LESS.
TUE
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
W WINDS 5 KT. WAVES FLAT.
WED...NW WINDS AROUND 5 KT
BECOMING S 10 TO 15 KT WITH GUSTS TO
20 KT IN THE AFTERNOON. WAVES 1 FT OR LESS.
WED NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A
CHANCE OF SHOWERS AND TSTMS.
THU...S WINDS 10 TO 15 KT
BECOMING SW AFTER MIDNIGHT. WAVES 1 FT.
A CHANCE OF TSTMS. A CHANCE OF SHOWERS IN THE MORNING, THEN SHOWERS
LIKELY.
FRI
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS.
A CHANCE OF TSTMS IN THE AFTERNOON.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
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