870
FZUS51 KLWX 310257
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1057 PM EDT SUN AUG 30 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.
ANZ500-310800-
1057 PM EDT SUN AUG 30 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.
ANZ535-310800-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
1057 PM EDT SUN AUG 30 2026
REST OF TONIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
MON
NW WINDS AROUND 5 KT. WAVES 1 FT.
MON NIGHT
S WINDS AROUND 5 KT. WAVES 1 FT.
TUE
W WINDS AROUND 5 KT. WAVES 1 FT.
TUE NIGHT
SW WINDS AROUND 5 KT. WAVES 1 FT.
WED
W WINDS AROUND 5 KT. WAVES 1 FT.
WED NIGHT
SW WINDS AROUND 5 KT. WAVES 1 FT.
THU
W WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
ANZ536-310800-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
1057 PM EDT SUN AUG 30 2026
REST OF TONIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT. ISOLATED
SHOWERS LATE THIS EVENING.
MON
N WINDS AROUND 5 KT. WAVES 1 FT.
MON NIGHT
S WINDS AROUND 5 KT. WAVES 1 FT.
TUE
W WINDS AROUND 5 KT. WAVES 1 FT.
TUE NIGHT
SW WINDS AROUND 5 KT. WAVES 1 FT.
WED
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED NIGHT
S WINDS AROUND 5 KT. WAVES 1 FT.
THU
W WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI
NW WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
ANZ537-310800-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
1057 PM EDT SUN AUG 30 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT MONDAY
REST OF TONIGHT
S WINDS 10 KT. GUSTS UP TO 20 KT LATE THIS
EVENING AND EARLY MORNING. WAVES 1 FT. ISOLATED SHOWERS LATE THIS
EVENING.
MON
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
MON NIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED
S WINDS AROUND 5 KT. WAVES 1 FT.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
FRI
N WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
ANZ530-310800-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
1057 PM EDT SUN AUG 30 2026
REST OF TONIGHT...SW WINDS 5 TO 10 KT
BECOMING W LATE. WAVES 1 FT
OR LESS. ISOLATED SHOWERS AND TSTMS.
MON
NE WINDS AROUND 5 KT. WAVES FLAT.
MON NIGHT
S WINDS AROUND 5 KT. WAVES FLAT.
TUE
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
TUE NIGHT
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF
SHOWERS.
WED
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS.
WED NIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
THU
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
AND TSTMS.
FRI
NW 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.
ANZ531-310800-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
1057 PM EDT SUN AUG 30 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT MONDAY
REST OF TONIGHT
SW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT LATE THIS
EVENING AND EARLY MORNING. WAVES 1 FT.
MON
NE WINDS AROUND 5 KT. WAVES FLAT.
MON NIGHT
S WINDS AROUND 5 KT. WAVES FLAT.
TUE
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TUE NIGHT
SW WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WED
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
WED NIGHT
S 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.
ANZ538-310800-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
1057 PM EDT SUN AUG 30 2026
REST OF TONIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT. ISOLATED
SHOWERS.
MON
E WINDS 5 KT. WAVES FLAT.
MON NIGHT
S WINDS AROUND 5 KT. WAVES FLAT.
TUE
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
TUE NIGHT
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF
SHOWERS.
WED
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF
SHOWERS.
WED NIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
THU
W WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
FRI
NW WINDS 5 KT. WAVES FLAT. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ539-310800-
CHESTER RIVER TO QUEENSTOWN MD-
1057 PM EDT SUN AUG 30 2026
REST OF TONIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
MON
NW WINDS AROUND 5 KT. WAVES FLAT.
MON NIGHT
S WINDS 5 KT. WAVES FLAT.
TUE
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE NIGHT
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
WED NIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
THU
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
AND TSTMS.
FRI
N WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ532-310800-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
1057 PM EDT SUN AUG 30 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT MONDAY
REST OF TONIGHT
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT LATE THIS
EVENING AND EARLY MORNING. WAVES 1 TO 2 FT.
MON
N WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
MON NIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE
SW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED...W WINDS 5 KT
BECOMING S IN THE AFTERNOON. WAVES 1 FT OR
LESS.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS IN THE
AFTERNOON. A CHANCE OF SHOWERS AND TSTMS THROUGH THE NIGHT.
FRI
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ540-310800-
EASTERN BAY-
1057 PM EDT SUN AUG 30 2026
REST OF TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
MON
NW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
MON NIGHT
S WINDS 5 KT. WAVES FLAT.
TUE
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE NIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
WED
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
WED NIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
THU
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS IN
THE AFTERNOON. A CHANCE OF SHOWERS AND TSTMS THROUGH THE NIGHT.
FRI
N WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ533-310800-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
1057 PM EDT SUN AUG 30 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT MONDAY
REST OF TONIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT LATE THIS
EVENING AND EARLY MORNING. WAVES 1 TO 2 FT.
MON
N WINDS 5 KT. WAVES LESS THAN 1 FT.
MON NIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE
SW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED...W WINDS 5 KT
BECOMING S IN THE AFTERNOON. WAVES 1 FT.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
ANZ541-310800-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
1057 PM EDT SUN AUG 30 2026
REST OF TONIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT LATE THIS
EVENING AND EARLY MORNING. WAVES 1 FT. ISOLATED SHOWERS LATE THIS
EVENING.
MON
NW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
MON NIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS.
ANZ542-310800-
PATUXENT RIVER TO BROOMES ISLAND MD-
1057 PM EDT SUN AUG 30 2026
REST OF TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
MON
N WINDS AROUND 5 KT. WAVES 1 FT.
MON NIGHT
S WINDS AROUND 5 KT. WAVES 1 FT.
TUE
SW WINDS AROUND 5 KT. WAVES 1 FT.
TUE NIGHT
SW WINDS AROUND 5 KT. WAVES 1 FT.
WED
SW WINDS AROUND 5 KT. WAVES 1 FT.
WED NIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
THU
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
FRI
NW WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
ANZ534-310800-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
1057 PM EDT SUN AUG 30 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT MONDAY
REST OF TONIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES
2 FT.
MON
SW WINDS 5 TO 10 KT. WAVES 1 FT.
MON NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
SW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED...W WINDS 5 KT
BECOMING S IN THE AFTERNOON. WAVES 1 FT.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
ANZ543-310800-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
1057 PM EDT SUN AUG 30 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT MONDAY
REST OF TONIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES
1 TO 2 FT. ISOLATED SHOWERS LATE THIS EVENING.
MON
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
MON NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
SW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
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