359
FZUS51 KLWX 250857
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
457 AM EDT TUE AUG 25 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.
ANZ500-252300-
457 AM EDT TUE AUG 25 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
HIGH PRESSURE REMAINS OVERHEAD TODAY BEFORE SHIFTING OFFSHORE
WEDNESDAY. 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. SOLID SCA CONDITIONS ARE EXPECTED IN
SOUTHERLY FLOW ON WEDNESDAY AFTERNOON INTO THE NIGHT. SCA CONDITIONS
ARE POSSIBLE AGAIN ON THURSDAY AHEAD OF THE FRONT, BUT SMWS WILL
ALSO BE POSSIBLE WITH STORMS IN THE AFTERNOON AND EVENING.
ANZ535-252300-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
457 AM EDT TUE AUG 25 2026
REST OF THE OVERNIGHT
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TONIGHT
NW 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. SHOWERS LIKELY WITH A CHANCE
OF TSTMS.
THU NIGHT
S WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI
N WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
AND TSTMS THROUGH THE NIGHT.
SAT
E WINDS AROUND 5 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ536-252300-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
457 AM EDT TUE AUG 25 2026
REST OF THE OVERNIGHT
N WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
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. SHOWERS LIKELY WITH A CHANCE
OF TSTMS.
THU NIGHT
S WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI
NW WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
AND TSTMS THROUGH THE NIGHT. A CHANCE OF SHOWERS AFTER MIDNIGHT.
SAT
E WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ537-252300-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
457 AM EDT TUE AUG 25 2026
REST OF THE OVERNIGHT
N WINDS 10 KT. WAVES 1 FT.
TODAY
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TONIGHT
SW WINDS AROUND 5 KT. WAVES FLAT.
WED...S WINDS AROUND 5 KT
BECOMING SE 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 AND TSTMS.
THU
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A CHANCE
OF TSTMS.
THU NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF TSTMS
THROUGH THE NIGHT. A CHANCE OF SHOWERS.
SAT
E 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.
ANZ530-252300-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
457 AM EDT TUE AUG 25 2026
REST OF THE OVERNIGHT
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TONIGHT
N WINDS AROUND 5 KT. WAVES 1 FT.
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 TSTMS.
THU
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE OF
TSTMS.
THU NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI
NW WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
AND TSTMS THROUGH THE NIGHT.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ531-252300-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
457 AM EDT TUE AUG 25 2026
REST OF THE OVERNIGHT
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TONIGHT
N WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED
SE WINDS 5 TO 10 KT. 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 WITH GUSTS TO 20 KT. WAVES 2 FT. SHOWERS
WITH A CHANCE OF TSTMS.
THU NIGHT
S WINDS 5 TO 10 KT. WAVES 1 TO 2 FT. A CHANCE OF
SHOWERS.
FRI
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
AND TSTMS THROUGH THE NIGHT.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ538-252300-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
457 AM EDT TUE AUG 25 2026
REST OF THE OVERNIGHT
NW WINDS 5 KT. WAVES FLAT.
TODAY
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TONIGHT
N WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED
SE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
THU
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE OF
TSTMS.
THU NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF
SHOWERS.
FRI
NW WINDS AROUND 5 KT. WAVES FLAT. A CHANCE OF SHOWERS AND
TSTMS THROUGH THE NIGHT.
SAT
NE WINDS AROUND 5 KT. WAVES FLAT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ539-252300-
CHESTER RIVER TO QUEENSTOWN MD-
457 AM EDT TUE AUG 25 2026
REST OF THE OVERNIGHT
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
N WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED
SE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
THU
S WINDS 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A CHANCE OF
TSTMS.
THU NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI
W WINDS AROUND 5 KT. WAVES FLAT. A CHANCE OF SHOWERS AND
TSTMS THROUGH THE NIGHT.
SAT
NE WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ532-252300-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
457 AM EDT TUE AUG 25 2026
REST OF THE OVERNIGHT
NW WINDS 10 KT. WAVES 1 FT.
TODAY
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TONIGHT
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED...E 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
AND TSTMS.
THU
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. SHOWERS
LIKELY WITH A CHANCE OF TSTMS.
THU NIGHT...S WINDS 10 TO 15 KT
BECOMING SW 5 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
FRI
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF
SHOWERS. A CHANCE OF TSTMS THROUGH THE NIGHT.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ540-252300-
EASTERN BAY-
457 AM EDT TUE AUG 25 2026
REST OF THE OVERNIGHT
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TONIGHT
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED
SE WINDS 5 TO 10 KT. 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 AND TSTMS.
THU
S WINDS 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A CHANCE OF
TSTMS.
THU NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI
W WINDS AROUND 5 KT. WAVES FLAT. A CHANCE OF SHOWERS. A
CHANCE OF TSTMS THROUGH THE NIGHT.
SAT
NE WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ533-252300-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
457 AM EDT TUE AUG 25 2026
REST OF THE OVERNIGHT
N WINDS 10 KT. WAVES 1 FT.
TODAY...NW WINDS 5 TO 10 KT
BECOMING SW LATE. WAVES 1 FT.
TONIGHT
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED...E 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 WITH GUSTS TO 25 KT. WAVES 3 FT. A
CHANCE OF SHOWERS AND TSTMS.
THU
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. SHOWERS
LIKELY WITH A CHANCE OF TSTMS.
THU NIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE EVENING.
WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
FRI
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF
SHOWERS. A CHANCE OF TSTMS THROUGH THE NIGHT.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ541-252300-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
457 AM EDT TUE AUG 25 2026
REST OF THE OVERNIGHT
N WINDS 10 KT. WAVES 1 FT.
TODAY...NW WINDS 5 TO 10 KT
BECOMING W LATE. WAVES 1 FT.
TONIGHT
W WINDS AROUND 5 KT. WAVES FLAT.
WED
SE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
WED NIGHT
S WINDS 15 TO 20 KT. WAVES 2 FT. A CHANCE OF SHOWERS
AND TSTMS.
THU
S WINDS 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A CHANCE OF
TSTMS.
THU NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI
SW WINDS AROUND 5 KT. WAVES FLAT. A CHANCE OF SHOWERS. A
CHANCE OF TSTMS THROUGH THE NIGHT.
SAT
NE WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ542-252300-
PATUXENT RIVER TO BROOMES ISLAND MD-
457 AM EDT TUE AUG 25 2026
REST OF THE OVERNIGHT
N WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
NW WINDS AROUND 5 KT. WAVES 1 FT.
TONIGHT
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED...NE WINDS AROUND 5 KT
BECOMING SE WITH GUSTS TO 20 KT 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 AND TSTMS.
THU
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A CHANCE
OF TSTMS.
THU NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI
SW WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS. A
CHANCE OF TSTMS THROUGH THE NIGHT.
SAT
NE WINDS AROUND 5 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ534-252300-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
457 AM EDT TUE AUG 25 2026
REST OF THE OVERNIGHT
N WINDS 10 KT. WAVES 2 FT.
TODAY
NW WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
TONIGHT
W WINDS 5 KT. WAVES FLAT.
WED...SE 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
AND TSTMS.
THU
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. SHOWERS
LIKELY WITH A CHANCE OF TSTMS.
THU NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A
CHANCE OF SHOWERS.
FRI
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS. A
CHANCE OF TSTMS.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS THROUGH
THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ543-252300-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
457 AM EDT TUE AUG 25 2026
REST OF THE OVERNIGHT
N WINDS 10 KT. WAVES 1 FT.
TODAY
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TONIGHT
W WINDS 5 KT. WAVES FLAT.
WED...SE 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 15 TO 20 KT. WAVES 2 FT. A CHANCE OF SHOWERS
AND TSTMS.
THU
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
SHOWERS LIKELY WITH A CHANCE OF TSTMS.
THU NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. A CHANCE OF SHOWERS.
FRI
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS. A
CHANCE OF TSTMS.
SAT
NE WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS
THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
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