335
FZUS51 KLWX 162359
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
758 PM EDT SUN AUG 16 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.
ANZ500-170800-
758 PM EDT SUN AUG 16 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
A WARM FRONT OVERHEAD WILL LIFT SLOWLY NORTHEASTWARD ACROSS THE
REGION THROUGH TONIGHT. A COLD FRONT APPROACHING FROM THE UPPER OHIO
VALLEY WILL FOLLOW FOR MONDAY. HIGH PRESSURE WILL BUILD IN FROM THE
MIDWEST TUESDAY, THEN ANOTHER COLD FRONT WILL APPROACH FROM THE
WEST WEDNESDAY INTO THURSDAY. A SMALL CRAFT ADVISORY MAY BE NEEDED
FOR PORTIONS OF THE WATERS WEDNESDAY NIGHT.
ANZ535-170800-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
758 PM EDT SUN AUG 16 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
...SEVERE THUNDERSTORM WATCH 588 IN EFFECT UNTIL 11 PM EDT THIS
EVENING...
TONIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT. WIDESPREAD SHOWERS
AND SCATTERED TSTMS.
MON
W WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
MON NIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT.
TUE
N WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE NIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED
W WINDS AROUND 5 KT. WAVES 1 FT.
WED NIGHT
SW WINDS AROUND 5 KT. WAVES 1 FT.
THU
N WINDS AROUND 5 KT. WAVES 1 FT. SHOWERS LIKELY IN THE
AFTERNOON. A CHANCE OF TSTMS THROUGH THE NIGHT. A CHANCE OF SHOWERS
THROUGH THE NIGHT.
FRI
NE WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS THROUGH THE NIGHT. A CHANCE OF SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ536-170800-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
758 PM EDT SUN AUG 16 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
...SEVERE THUNDERSTORM WATCH 588 IN EFFECT UNTIL 11 PM EDT THIS
EVENING...
TONIGHT...S WINDS 10 KT
BECOMING SW LATE. GUSTS UP TO 20 KT.
WAVES 1 FT. NUMEROUS SHOWERS AND SCATTERED TSTMS THIS EVENING, THEN
SCATTERED SHOWERS WITH A CHANCE OF TSTMS AFTER MIDNIGHT.
MON
W WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
MON NIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT.
TUE
N WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE NIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT.
WED
W WINDS AROUND 5 KT. WAVES 1 FT.
WED NIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
THU
NW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF TSTMS
THROUGH THE NIGHT. A CHANCE OF SHOWERS.
FRI
NE WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF TSTMS THROUGH
THE NIGHT. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ537-170800-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
758 PM EDT SUN AUG 16 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT MONDAY
TONIGHT...S WINDS 15 KT
BECOMING SW LATE. GUSTS UP TO 25 KT.
WAVES 2 FT. A CHANCE OF TSTMS. NUMEROUS SHOWERS.
MON...W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
BECOMING NW 5 TO
10 KT IN THE AFTERNOON. WAVES 1 TO 2 FT.
MON NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
N WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
N WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED
W WINDS AROUND 5 KT. WAVES FLAT.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU...SW WINDS 5 TO 10 KT
BECOMING NE. WAVES 1 FT. SHOWERS LIKELY
WITH A CHANCE OF TSTMS THROUGH THE NIGHT. A CHANCE OF SHOWERS AFTER
MIDNIGHT.
FRI
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF TSTMS THROUGH
THE NIGHT. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ530-170800-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
758 PM EDT SUN AUG 16 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT MONDAY
TONIGHT...S WINDS 15 KT
BECOMING SW LATE. GUSTS UP TO 20 KT.
WAVES 1 FT. A CHANCE OF TSTMS. SHOWERS.
MON
W WINDS 5 TO 10 KT. WAVES 1 FT.
MON NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TUE
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED NIGHT
SW WINDS 5 KT. WAVES FLAT. A CHANCE OF SHOWERS AND
TSTMS.
THU
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF TSTMS. A CHANCE
OF SHOWERS.
FRI
NE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ531-170800-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
758 PM EDT SUN AUG 16 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT MONDAY
TONIGHT...S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT
BECOMING SW
10 KT LATE. WAVES 2 TO 3 FT. A CHANCE OF TSTMS. SHOWERS.
MON
W WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
MON NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
N WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED NIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
THU
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AFTER
MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ538-170800-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
758 PM EDT SUN AUG 16 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT MONDAY
TONIGHT
SW WINDS 10 KT WITH GUSTS TO 25 KT. WAVES 1 FT. SHOWERS.
TSTMS LIKELY, MAINLY THIS EVENING.
MON
W WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
MON NIGHT
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE
N WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE NIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED
W WINDS 5 KT. WAVES FLAT.
WED NIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
THU
N WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS.
FRI
NE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ539-170800-
CHESTER RIVER TO QUEENSTOWN MD-
758 PM EDT SUN AUG 16 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT MONDAY
TONIGHT...S WINDS 15 KT WITH GUSTS TO 25 KT
BECOMING SW LATE.
WAVES 1 TO 2 FT. A CHANCE OF TSTMS. SHOWERS.
MON
W WINDS 5 TO 10 KT. WAVES 1 FT.
MON NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
N WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED
W WINDS 5 KT. WAVES FLAT.
WED NIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
THU
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI
NE 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.
ANZ532-170800-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
758 PM EDT SUN AUG 16 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT MONDAY
TONIGHT...S WINDS 15 TO 20 KT
BECOMING SW LATE. GUSTS UP TO
25 KT. WAVES 2 TO 3 FT. A CHANCE OF TSTMS. SHOWERS.
MON
W WINDS 5 TO 10 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS AND
TSTMS.
MON NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
N WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
WED
W WINDS 5 KT. WAVES LESS THAN 1 FT.
WED NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
THU
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS IN THE
MORNING, THEN SHOWERS LIKELY WITH A CHANCE OF TSTMS THROUGH THE
NIGHT. A CHANCE OF SHOWERS AFTER MIDNIGHT.
FRI
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF TSTMS THROUGH
THE NIGHT. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ540-170800-
EASTERN BAY-
758 PM EDT SUN AUG 16 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT MONDAY
TONIGHT...S WINDS 15 KT
BECOMING SW LATE. GUSTS UP TO 25 KT.
WAVES 2 FT. A CHANCE OF TSTMS. SHOWERS.
MON
W WINDS 5 TO 10 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS AND
TSTMS.
MON NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TUE
N WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
NW WINDS AROUND 5 KT. WAVES FLAT.
WED
W WINDS 5 KT. WAVES FLAT.
WED NIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF
SHOWERS.
THU
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS IN THE
MORNING, THEN SHOWERS LIKELY WITH A CHANCE OF TSTMS THROUGH THE
NIGHT. A CHANCE OF SHOWERS AFTER MIDNIGHT.
FRI
NE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF TSTMS IN
THE AFTERNOON. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ533-170800-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
758 PM EDT SUN AUG 16 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT MONDAY
TONIGHT...S WINDS 15 TO 20 KT
BECOMING SW LATE. GUSTS UP TO
25 KT. WAVES 3 FT...SUBSIDING TO 2 FT AFTER MIDNIGHT. A CHANCE OF
TSTMS. SHOWERS.
MON...W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
BECOMING NW 5 KT
IN THE AFTERNOON. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS AND TSTMS.
MON NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TUE
N WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
WED...NW WINDS 5 KT
BECOMING SW IN THE AFTERNOON. WAVES 1 FT.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU...NW WINDS 5 TO 10 KT
BECOMING NE 10 TO 15 KT. WAVES 1 FT.
SHOWERS LIKELY WITH A CHANCE OF TSTMS THROUGH THE NIGHT. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
FRI...NE WINDS 10 TO 15 KT
BECOMING E 5 KT AFTER MIDNIGHT. WAVES
1 TO 2 FT. A CHANCE OF TSTMS THROUGH THE NIGHT. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ541-170800-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
758 PM EDT SUN AUG 16 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT MONDAY
TONIGHT...S WINDS 15 TO 20 KT
BECOMING SW LATE. GUSTS UP TO
25 KT. WAVES 2 FT. SHOWERS WITH A CHANCE OF TSTMS.
MON...W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
DIMINISHING TO
5 KT IN THE AFTERNOON. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS AND
TSTMS.
MON NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TUE
N WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED
W WINDS AROUND 5 KT. WAVES FLAT.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU...NW WINDS 5 TO 10 KT
BECOMING NE. WAVES 1 FT. A CHANCE OF
SHOWERS IN THE MORNING, THEN SHOWERS LIKELY WITH A CHANCE OF TSTMS
THROUGH THE NIGHT. A CHANCE OF SHOWERS AFTER MIDNIGHT.
FRI
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ542-170800-
PATUXENT RIVER TO BROOMES ISLAND MD-
758 PM EDT SUN AUG 16 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT MONDAY
TONIGHT...S WINDS 10 KT
BECOMING SW LATE. GUSTS UP TO 25 KT.
WAVES 1 FT. A CHANCE OF TSTMS. SHOWERS.
MON
W WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
MON NIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT.
TUE
N WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT.
WED
W WINDS AROUND 5 KT. WAVES 1 FT.
WED NIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
THU
NW WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS THROUGH THE NIGHT. A CHANCE OF SHOWERS AFTER
MIDNIGHT.
FRI
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF TSTMS THROUGH
THE NIGHT. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ534-170800-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
758 PM EDT SUN AUG 16 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT MONDAY
TONIGHT...S WINDS 20 KT
BECOMING SW LATE. GUSTS UP TO 25 KT.
WAVES 3 FT. A CHANCE OF TSTMS. SHOWERS.
MON...W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
DIMINISHING TO
5 TO 10 KT IN THE AFTERNOON. WAVES 3 FT... SUBSIDING TO 1 FT IN THE
AFTERNOON.
MON NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
N WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
N WINDS 5 KT. WAVES LESS THAN 1 FT.
WED...NW WINDS 5 KT
BECOMING SW IN THE AFTERNOON. WAVES 1 FT.
WED NIGHT
S WINDS 10 TO 15 KT. WAVES 2 FT.
THU...SW WINDS 5 TO 10 KT
BECOMING NE. WAVES 1 FT. SHOWERS LIKELY
WITH A CHANCE OF TSTMS THROUGH THE NIGHT.
FRI
NE WINDS 5 TO 10 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS AND
TSTMS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ543-170800-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
758 PM EDT SUN AUG 16 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT MONDAY
TONIGHT...S WINDS 20 KT
BECOMING SW LATE. GUSTS UP TO 25 KT.
WAVES 2 TO 3 FT. A CHANCE OF TSTMS. SHOWERS.
MON
W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
MON NIGHT...W WINDS 5 TO 10 KT
BECOMING N LATE. WAVES 1 FT.
TUE
N WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
WED
W WINDS 5 KT. WAVES FLAT.
WED NIGHT
S WINDS 10 TO 15 KT. WAVES 1 FT.
THU...SW WINDS 5 TO 10 KT
BECOMING SE IN THE EVENING, THEN
BECOMING N AFTER MIDNIGHT. WAVES 1 FT. SHOWERS LIKELY WITH A CHANCE
OF TSTMS THROUGH THE NIGHT. A CHANCE OF SHOWERS AFTER MIDNIGHT.
FRI
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
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