610
FZUS51 KLWX 301948
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
348 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-
348 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-
348 PM EDT SUN AUG 30 2026
REST OF THIS AFTERNOON
S WINDS 10 KT. WAVES 1 FT. SCATTERED
SHOWERS.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 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
SW WINDS AROUND 5 KT. WAVES 1 FT.
THU
W WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
ANZ536-310800-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
348 PM EDT SUN AUG 30 2026
REST OF THIS AFTERNOON
S WINDS 10 KT. WAVES 1 FT. ISOLATED
SHOWERS.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
MON
SW 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
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
THU
W WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
ANZ537-310800-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
348 PM EDT SUN AUG 30 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT MONDAY
REST OF THIS AFTERNOON
SE WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
1 FT.
TONIGHT
S WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
MON...W WINDS 5 TO 10 KT
BECOMING SE LATE. WAVES 1 FT.
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
INCREASING TO 5 TO 10 KT. WAVES 1 FT.
THU
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
ANZ530-310800-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
348 PM EDT SUN AUG 30 2026
REST OF THIS AFTERNOON
SW WINDS 10 KT. WAVES 1 FT. ISOLATED
SHOWERS AND TSTMS.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
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 AND TSTMS.
WED
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
THU
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
AND TSTMS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ531-310800-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
348 PM EDT SUN AUG 30 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT MONDAY
REST OF THIS AFTERNOON
S WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
2 FT. ISOLATED SHOWERS AND TSTMS.
TONIGHT...S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
BECOMING SW
5 TO 10 KT LATE. WAVES 1 TO 2 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
BECOMING S. WAVES 1 FT OR LESS.
THU
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ538-310800-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
348 PM EDT SUN AUG 30 2026
REST OF THIS AFTERNOON
SW WINDS 10 KT. WAVES 1 FT. SCATTERED
SHOWERS WITH ISOLATED TSTMS.
TONIGHT...S WINDS 5 TO 10 KT
BECOMING W LATE. WAVES 1 FT OR LESS.
MON
NE 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 AND TSTMS.
WED
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
THU
W WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ539-310800-
CHESTER RIVER TO QUEENSTOWN MD-
348 PM EDT SUN AUG 30 2026
REST OF THIS AFTERNOON
S WINDS 10 KT. WAVES 1 FT.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
MON
NW WINDS AROUND 5 KT. WAVES FLAT.
MON NIGHT
S WINDS AROUND 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.
THU
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
AND TSTMS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ532-310800-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
348 PM EDT SUN AUG 30 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT MONDAY
REST OF THIS AFTERNOON
S WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
2 FT. ISOLATED SHOWERS.
TONIGHT...S WINDS 10 TO 15 KT
BECOMING SW 5 TO 10 KT LATE. GUSTS
UP TO 20 KT. WAVES 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. WAVES 1 FT OR LESS.
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.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ540-310800-
EASTERN BAY-
348 PM EDT SUN AUG 30 2026
REST OF THIS AFTERNOON
S WINDS 10 KT. WAVES 1 FT.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
MON
W 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.
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.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ533-310800-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
348 PM EDT SUN AUG 30 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT MONDAY
REST OF THIS AFTERNOON
S WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
2 FT. ISOLATED SHOWERS.
TONIGHT...S WINDS 10 TO 15 KT
BECOMING SW LATE. GUSTS UP TO
20 KT. WAVES 2 FT.
MON...W WINDS 5 TO 10 KT
BECOMING E IN THE AFTERNOON. 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. WAVES 1 FT.
THU
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
ANZ541-310800-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
348 PM EDT SUN AUG 30 2026
REST OF THIS AFTERNOON
S WINDS 15 KT. WAVES 1 FT.
TONIGHT
S WINDS 10 TO 15 KT. WAVES 1 FT.
MON
W WINDS 5 KT. WAVES LESS THAN 1 FT.
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
BECOMING S. WAVES 1 FT OR LESS.
THU
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
ANZ542-310800-
PATUXENT RIVER TO BROOMES ISLAND MD-
348 PM EDT SUN AUG 30 2026
REST OF THIS AFTERNOON
S WINDS 10 KT. WAVES 1 FT.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
MON
W 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.
THU
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
ANZ534-310800-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
348 PM EDT SUN AUG 30 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT MONDAY
REST OF THIS AFTERNOON
SE WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
2 FT.
TONIGHT...S WINDS 10 TO 15 KT
BECOMING SW LATE. GUSTS UP TO
20 KT. WAVES 2 FT.
MON...W WINDS 5 TO 10 KT
BECOMING SE IN THE AFTERNOON. 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. WAVES 1 FT.
THU
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
ANZ543-310800-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
348 PM EDT SUN AUG 30 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT MONDAY
REST OF THIS AFTERNOON
S WINDS 10 KT WITH GUSTS TO 20 KT. WAVES
1 FT.
TONIGHT...S WINDS 10 TO 15 KT
BECOMING SW LATE. GUSTS UP TO
20 KT. WAVES 1 FT.
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.
THU
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
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