570
FZUS51 KLWX 100900
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
459 AM EDT SUN MAY 10 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.
ANZ500-102300-
459 AM EDT SUN MAY 10 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
A COLD FRONT WILL SLOWLY PUSH SOUTHEASTWARD THROUGH THE AREA BETWEEN
THIS AFTERNOON INTO TONIGHT. LOW PRESSURE WILL RIDE ALONG THE
BOUNDARY TO OUR SOUTH ON MONDAY. HIGH PRESSURE WILL BUILD IN FROM
THE WEST ON TUESDAY BEFORE ANOTHER FRONTAL SYSTEM APPROACHES
WEDNESDAY. SMALL CRAFT ADVISORIES MAY BE NEEDED AGAIN AT TIMES
MONDAY NIGHT THROUGH TUESDAY MORNING AND AGAIN WEDNESDAY THROUGH
THURSDAY.
ANZ535-102300-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
459 AM EDT SUN MAY 10 2026
REST OF THE OVERNIGHT
SW WINDS 5 KT. WAVES FLAT.
TODAY
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
TONIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
MON
N WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
MON NIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT.
TUE
N WINDS AROUND 5 KT. WAVES 1 FT.
TUE NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
WED
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS IN THE
AFTERNOON. SHOWERS THROUGH THE NIGHT.
THU
NW WINDS 5 TO 10 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ536-102300-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
459 AM EDT SUN MAY 10 2026
REST OF THE OVERNIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
TONIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
MON
N WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
MON NIGHT
W WINDS AROUND 5 KT. WAVES 1 FT.
TUE
N WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
WED...S WINDS 10 TO 15 KT
BECOMING SW 5 KT AFTER MIDNIGHT. WAVES
1 FT. A CHANCE OF SHOWERS IN THE AFTERNOON. SHOWERS THROUGH THE
NIGHT.
THU
NW WINDS 5 TO 10 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ537-102300-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
459 AM EDT SUN MAY 10 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH MONDAY
MORNING...
REST OF THE OVERNIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY...SW WINDS 5 KT
BECOMING SE LATE. WAVES 1 FT.
TONIGHT...E WINDS 5 TO 10 KT
BECOMING N 10 TO 15 KT AFTER
MIDNIGHT. GUSTS UP TO 20 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
MON
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. SHOWERS
LIKELY.
MON NIGHT...SE WINDS AROUND 5 KT
BECOMING N AFTER MIDNIGHT. WAVES
1 FT.
TUE
N WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
WED
S WINDS 10 TO 15 KT. WAVES 2 FT. A CHANCE OF SHOWERS IN THE
AFTERNOON. SHOWERS THROUGH THE NIGHT.
THU
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS IN THE
MORNING.
ANZ530-102300-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
459 AM EDT SUN MAY 10 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH MONDAY
MORNING...
REST OF THE OVERNIGHT
W WINDS 5 KT. WAVES FLAT. PATCHY FOG. VSBY
1 TO 3 NM.
TODAY
W WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
TONIGHT
N WINDS 5 TO 10 KT. GUSTS UP TO 20 KT AFTER MIDNIGHT.
WAVES 1 FT. A CHANCE OF SHOWERS AND TSTMS.
MON...N WINDS 5 TO 10 KT WITH GUSTS TO 20 KT
BECOMING W IN THE
AFTERNOON. WAVES 1 FT. A CHANCE OF SHOWERS.
MON NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
WED
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS IN
THE AFTERNOON. SHOWERS THROUGH THE NIGHT.
THU
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ531-102300-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
459 AM EDT SUN MAY 10 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH MONDAY
MORNING...
REST OF THE OVERNIGHT
W WINDS 5 KT. WAVES FLAT.
TODAY
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
TONIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
A CHANCE OF SHOWERS AND TSTMS.
MON...N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
BECOMING W 5 KT IN
THE AFTERNOON. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
MON NIGHT...SW WINDS AROUND 5 KT
BECOMING N AFTER MIDNIGHT. WAVES
1 FT OR LESS.
TUE
N WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
WED
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS IN
THE AFTERNOON. SHOWERS THROUGH THE NIGHT.
THU
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS IN THE
MORNING.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ538-102300-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
459 AM EDT SUN MAY 10 2026
REST OF THE OVERNIGHT
NW WINDS 5 KT. WAVES FLAT.
TODAY
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. SHOWERS LIKELY
WITH A CHANCE OF TSTMS.
TONIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
MON...N WINDS 5 TO 10 KT
BECOMING SE IN THE AFTERNOON. WAVES 1 FT
OR LESS. A CHANCE OF SHOWERS.
MON NIGHT...SW WINDS AROUND 5 KT
BECOMING N AFTER MIDNIGHT. WAVES
1 FT OR LESS.
TUE
NE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TUE NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
WED...S WINDS 10 TO 15 KT
BECOMING SW 5 KT AFTER MIDNIGHT. WAVES
1 FT. A CHANCE OF SHOWERS IN THE AFTERNOON. SHOWERS THROUGH THE
NIGHT.
THU
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS IN THE
MORNING.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ539-102300-
CHESTER RIVER TO QUEENSTOWN MD-
459 AM EDT SUN MAY 10 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH MONDAY
MORNING...
REST OF THE OVERNIGHT
SW WINDS 5 KT. WAVES FLAT.
TODAY
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF
SHOWERS AND TSTMS.
TONIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
A CHANCE OF SHOWERS AND TSTMS.
MON
NW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE MORNING. WAVES
1 TO 2 FT. A CHANCE OF SHOWERS.
MON NIGHT...SW WINDS AROUND 5 KT
BECOMING N AFTER MIDNIGHT. WAVES
1 FT OR LESS.
TUE
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
WED
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS IN
THE AFTERNOON. SHOWERS THROUGH THE NIGHT.
THU
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS IN THE
MORNING.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ532-102300-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
459 AM EDT SUN MAY 10 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH MONDAY
MORNING...
REST OF THE OVERNIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY...SW WINDS 5 KT
BECOMING S IN THE AFTERNOON. WAVES 1 FT. A
CHANCE OF SHOWERS.
TONIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
A CHANCE OF SHOWERS AND TSTMS.
MON...N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
BECOMING NE 5 KT
IN THE AFTERNOON. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
MON NIGHT...SW WINDS 5 KT
BECOMING N AFTER MIDNIGHT. WAVES 1 FT
OR LESS.
TUE
N WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT.
WED
S WINDS 10 TO 15 KT. WAVES 2 TO 3 FT. A CHANCE OF SHOWERS IN
THE AFTERNOON. SHOWERS THROUGH THE NIGHT.
THU
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS IN THE
MORNING.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ540-102300-
EASTERN BAY-
459 AM EDT SUN MAY 10 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH MONDAY
MORNING...
REST OF THE OVERNIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TONIGHT
N WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT. A CHANCE OF SHOWERS AND TSTMS.
MON...N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
BECOMING NW 5 KT
IN THE AFTERNOON. WAVES 1 FT. A CHANCE OF SHOWERS.
MON NIGHT...SW WINDS AROUND 5 KT
BECOMING N AFTER MIDNIGHT. WAVES
1 FT OR LESS.
TUE
N WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
WED
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS IN
THE AFTERNOON. SHOWERS THROUGH THE NIGHT.
THU
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS IN THE
MORNING.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ533-102300-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
459 AM EDT SUN MAY 10 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH MONDAY
MORNING...
REST OF THE OVERNIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY...SW WINDS 5 KT
BECOMING SE IN THE AFTERNOON. WAVES 1 FT.
TONIGHT...N WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT
BUILDING TO 3 FT AFTER MIDNIGHT. A CHANCE OF SHOWERS.
MON
N WINDS 10 TO 15 KT. GUSTS UP TO 25 KT IN THE MORNING. WAVES
2 TO 3 FT. SHOWERS LIKELY.
MON NIGHT...S WINDS AROUND 5 KT
BECOMING N AFTER MIDNIGHT. WAVES
FLAT...BUILDING TO 2 FT AFTER MIDNIGHT.
TUE
N WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
TUE NIGHT
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
WED
S WINDS 15 TO 20 KT. WAVES 2 TO 3 FT. A CHANCE OF SHOWERS IN
THE AFTERNOON. SHOWERS THROUGH THE NIGHT.
THU
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS IN THE
MORNING.
ANZ541-102300-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
459 AM EDT SUN MAY 10 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH MONDAY
MORNING...
REST OF THE OVERNIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
SW WINDS 5 TO 10 KT. WAVES 1 FT.
TONIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
A CHANCE OF SHOWERS.
MON
N WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE MORNING. WAVES
1 TO 2 FT. SHOWERS LIKELY.
MON NIGHT...SW WINDS AROUND 5 KT
BECOMING N AFTER MIDNIGHT. WAVES
1 FT OR LESS.
TUE
N WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
S WINDS 10 TO 15 KT. WAVES 1 FT.
WED
S WINDS 15 TO 20 KT. WAVES 2 FT. A CHANCE OF SHOWERS IN THE
AFTERNOON. SHOWERS THROUGH THE NIGHT.
THU
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS IN THE
MORNING.
ANZ542-102300-
PATUXENT RIVER TO BROOMES ISLAND MD-
459 AM EDT SUN MAY 10 2026
REST OF THE OVERNIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY...SW WINDS 5 KT
BECOMING SE LATE. WAVES 1 FT.
TONIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
MON
N WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
MON NIGHT
W WINDS AROUND 5 KT. WAVES 1 FT.
TUE
N WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
WED
S WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF SHOWERS IN THE
AFTERNOON. SHOWERS THROUGH THE NIGHT.
THU
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS IN THE
MORNING.
ANZ534-102300-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
459 AM EDT SUN MAY 10 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH MONDAY
MORNING...
REST OF THE OVERNIGHT
W WINDS 10 KT. WAVES 1 FT.
TODAY...SW WINDS 5 KT
BECOMING SE IN THE AFTERNOON. WAVES 1 FT.
TONIGHT...SE WINDS 5 TO 10 KT
BECOMING NE 10 TO 15 KT IN THE LATE
EVENING AND EARLY MORNING, THEN BECOMING N LATE. GUSTS UP TO 20 KT.
WAVES 2 TO 3 FT.
MON
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 TO 3 FT.
SHOWERS LIKELY.
MON NIGHT...SE WINDS AROUND 5 KT
BECOMING N 10 TO 15 KT WITH
GUSTS TO 20 KT AFTER MIDNIGHT. WAVES 1 TO 2 FT.
TUE
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
TUE NIGHT
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
WED
S WINDS 15 TO 20 KT. WAVES 3 FT. A CHANCE OF SHOWERS IN THE
AFTERNOON. SHOWERS THROUGH THE NIGHT.
THU
NW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS IN
THE MORNING.
ANZ543-102300-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
459 AM EDT SUN MAY 10 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH MONDAY
MORNING...
REST OF THE OVERNIGHT
W WINDS 10 KT. WAVES 1 FT.
TODAY
SW WINDS 5 TO 10 KT. WAVES 1 FT.
TONIGHT...S WINDS 5 TO 10 KT
BECOMING NE 10 TO 15 KT IN THE LATE
EVENING AND OVERNIGHT. GUSTS UP TO 20 KT. WAVES 1 TO 2 FT.
MON
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
SHOWERS LIKELY.
MON NIGHT...SE WINDS AROUND 5 KT
BECOMING N AFTER MIDNIGHT. WAVES
1 FT.
TUE...N WINDS 10 TO 15 KT
BECOMING NW 5 TO 10 KT IN THE
AFTERNOON. WAVES 1 FT.
TUE NIGHT
S WINDS 10 TO 15 KT. WAVES 1 FT.
WED
S WINDS 15 TO 20 KT. WAVES 2 FT. SHOWERS THROUGH THE NIGHT.
THU
NW WINDS 10 TO 15 KT. WAVES 1 FT. SHOWERS LIKELY IN THE
MORNING.
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