087
FZUS51 KLWX 310857
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
457 AM EDT MON AUG 31 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.
ANZ500-312300-
457 AM EDT MON AUG 31 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
HIGH PRESSURE WILL BUILD SOUTH OF THE WATERS THROUGH MID WEEK WITH
SCATTERED DIURNAL SHOWERS AND THUNDERSTORMS EXPECTED IN A HOT AND
HUMID AIR MASS.
ANZ535-312300-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
457 AM EDT MON AUG 31 2026
REST OF THE OVERNIGHT
LIGHT WINDS. WAVES FLAT.
TODAY
NE WINDS AROUND 5 KT. WAVES 1 FT. SCATTERED SHOWERS AND
TSTMS.
TONIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE
W WINDS 5 KT. WAVES LESS THAN 1 FT. SCATTERED SHOWERS AND
TSTMS.
TUE NIGHT
W WINDS AROUND 5 KT. WAVES 1 FT. SCATTERED SHOWERS AND
TSTMS.
WED
NE WINDS 5 KT. WAVES LESS THAN 1 FT.
WED NIGHT
SE WINDS AROUND 5 KT. WAVES 1 FT.
THU
W WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ536-312300-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
457 AM EDT MON AUG 31 2026
REST OF THE OVERNIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
NE WINDS AROUND 5 KT. WAVES 1 FT. SCATTERED SHOWERS AND
TSTMS.
TONIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT. SCATTERED SHOWERS.
TUE
SW WINDS 5 KT. WAVES LESS THAN 1 FT. SCATTERED SHOWERS AND
TSTMS.
TUE NIGHT
SW WINDS AROUND 5 KT. WAVES 1 FT. SCATTERED SHOWERS AND
TSTMS.
WED
N WINDS AROUND 5 KT. WAVES 1 FT.
WED NIGHT
SE WINDS AROUND 5 KT. WAVES 1 FT.
THU
W WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS AND
TSTMS THROUGH THE NIGHT.
FRI
NW WINDS AROUND 5 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ537-312300-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
457 AM EDT MON AUG 31 2026
REST OF THE OVERNIGHT
SW WINDS 10 KT. WAVES 1 FT.
TODAY
NE WINDS AROUND 5 KT. WAVES 1 FT. SCATTERED SHOWERS AND
TSTMS.
TONIGHT...S WINDS 5 TO 10 KT
BECOMING SW LATE. WAVES 1 FT.
SCATTERED SHOWERS.
TUE
SW WINDS 5 KT. WAVES LESS THAN 1 FT. SCATTERED SHOWERS AND
TSTMS.
TUE NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. SCATTERED SHOWERS AND
TSTMS.
WED
N WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
THU
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ530-312300-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
457 AM EDT MON AUG 31 2026
REST OF THE OVERNIGHT
NE WINDS 5 KT. WAVES FLAT. SCATTERED
SHOWERS.
TODAY
NE WINDS 5 KT. WAVES FLAT.
TONIGHT
S WINDS AROUND 5 KT. WAVES FLAT.
TUE
SW WINDS 5 KT. WAVES FLAT. SCATTERED SHOWERS AND TSTMS.
TUE NIGHT
SE WINDS 5 KT. WAVES FLAT. SCATTERED SHOWERS AND TSTMS.
WED
E WINDS 5 KT. WAVES FLAT. A CHANCE OF SHOWERS.
WED NIGHT
SE WINDS 5 KT. WAVES FLAT. A CHANCE OF SHOWERS.
THU
W WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS.
A CHANCE OF TSTMS THROUGH THE NIGHT.
FRI
N WINDS 5 TO 10 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ531-312300-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
457 AM EDT MON AUG 31 2026
REST OF THE OVERNIGHT
NW WINDS 5 KT. WAVES LESS THAN 1 FT. A
SLIGHT CHANCE OF SHOWERS.
TODAY
NE WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT...S WINDS 5 TO 10 KT
BECOMING SW LATE. WAVES 1 FT.
TUE
SW WINDS 5 KT. WAVES LESS THAN 1 FT. SCATTERED SHOWERS AND
TSTMS.
TUE NIGHT...S WINDS 5 TO 10 KT
BECOMING NW AFTER MIDNIGHT. WAVES
1 FT. SCATTERED SHOWERS AND TSTMS.
WED
E WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
WED NIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF
SHOWERS.
THU
W WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS. A CHANCE
OF TSTMS THROUGH THE NIGHT.
FRI
N 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.
ANZ538-312300-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
457 AM EDT MON AUG 31 2026
REST OF THE OVERNIGHT
NW WINDS 5 KT. WAVES FLAT. A SLIGHT CHANCE
OF SHOWERS.
TODAY
NE WINDS 5 KT. WAVES FLAT.
TONIGHT
S WINDS 5 KT. WAVES FLAT.
TUE
W WINDS 5 KT. WAVES FLAT. SCATTERED SHOWERS AND TSTMS.
TUE NIGHT
W WINDS 5 KT. WAVES FLAT. SCATTERED SHOWERS AND TSTMS.
WED
E WINDS 5 KT. WAVES FLAT. A CHANCE OF SHOWERS.
WED NIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF
SHOWERS.
THU
W WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS.
A CHANCE OF TSTMS THROUGH THE NIGHT.
FRI
N WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ539-312300-
CHESTER RIVER TO QUEENSTOWN MD-
457 AM EDT MON AUG 31 2026
REST OF THE OVERNIGHT
NW WINDS 5 KT. WAVES FLAT. ISOLATED
SHOWERS.
TODAY
NE WINDS 5 KT. WAVES FLAT. SCATTERED SHOWERS AND TSTMS.
TONIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE
SW WINDS 5 KT. WAVES LESS THAN 1 FT. SCATTERED SHOWERS AND
TSTMS.
TUE NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. SCATTERED SHOWERS AND
TSTMS.
WED
NE WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
WED NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
THU
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
FRI
N 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.
ANZ532-312300-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
457 AM EDT MON AUG 31 2026
REST OF THE OVERNIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
NE WINDS 5 KT. WAVES LESS THAN 1 FT. SCATTERED SHOWERS AND
TSTMS.
TONIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE
SW WINDS 5 TO 10 KT. WAVES 1 FT. SCATTERED SHOWERS AND TSTMS.
TUE NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. SCATTERED SHOWERS AND
TSTMS.
WED
NE WINDS 5 KT. WAVES LESS THAN 1 FT.
WED NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
THU
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
FRI
N 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.
ANZ540-312300-
EASTERN BAY-
457 AM EDT MON AUG 31 2026
REST OF THE OVERNIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT.
ISOLATED SHOWERS.
TODAY
N WINDS 5 KT. WAVES FLAT. SCATTERED SHOWERS AND TSTMS.
TONIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE
SW WINDS 5 TO 10 KT. WAVES 1 FT. SCATTERED SHOWERS AND TSTMS.
TUE NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. SCATTERED SHOWERS AND
TSTMS.
WED
NE WINDS 5 KT. WAVES LESS THAN 1 FT.
WED NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
THU
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
FRI
N WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ533-312300-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
457 AM EDT MON AUG 31 2026
REST OF THE OVERNIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
N WINDS 5 KT. WAVES LESS THAN 1 FT. SCATTERED SHOWERS AND
TSTMS.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
SW WINDS 5 TO 10 KT. WAVES 1 FT. SCATTERED SHOWERS AND TSTMS.
TUE NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. SCATTERED SHOWERS AND
TSTMS.
WED
N WINDS 5 KT. WAVES LESS THAN 1 FT.
WED NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
THU
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
FRI
N 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.
ANZ541-312300-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
457 AM EDT MON AUG 31 2026
REST OF THE OVERNIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
NW WINDS 5 KT. WAVES LESS THAN 1 FT. SCATTERED SHOWERS AND
TSTMS.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TUE
SW WINDS 5 TO 10 KT. WAVES 1 FT. SCATTERED SHOWERS AND TSTMS.
TUE NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. SCATTERED SHOWERS AND
TSTMS.
WED
N WINDS 5 KT. WAVES LESS THAN 1 FT.
WED NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
THU
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
FRI
N 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.
ANZ542-312300-
PATUXENT RIVER TO BROOMES ISLAND MD-
457 AM EDT MON AUG 31 2026
REST OF THE OVERNIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
NE WINDS 5 KT. WAVES LESS THAN 1 FT. SCATTERED SHOWERS AND
TSTMS.
TONIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE
SW WINDS 5 KT. WAVES LESS THAN 1 FT. SCATTERED SHOWERS AND
TSTMS.
TUE NIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT. SCATTERED SHOWERS
AND TSTMS.
WED
N WINDS 5 KT. WAVES LESS THAN 1 FT.
WED NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
THU
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
FRI
NW 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.
ANZ534-312300-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
457 AM EDT MON AUG 31 2026
REST OF THE OVERNIGHT
SW WINDS 10 KT. WAVES 1 FT.
TODAY...W WINDS 5 TO 10 KT
BECOMING E IN THE AFTERNOON. WAVES
1 FT. SCATTERED SHOWERS AND TSTMS.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
SW WINDS 5 TO 10 KT. WAVES 1 FT. SCATTERED SHOWERS AND TSTMS.
TUE NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. SCATTERED SHOWERS AND
TSTMS.
WED
NW WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
THU
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ543-312300-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
457 AM EDT MON AUG 31 2026
REST OF THE OVERNIGHT
SW WINDS 10 KT. WAVES 1 FT.
TODAY
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. SCATTERED SHOWERS
AND TSTMS.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
SW WINDS 5 TO 10 KT. WAVES 1 FT. SCATTERED SHOWERS AND TSTMS.
TUE NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. SCATTERED SHOWERS AND
TSTMS.
WED
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
WED NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
THU
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS THROUGH THE NIGHT.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
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