468
FZUS51 KLWX 181158
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
758 AM EDT MON MAY 18 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.
ANZ500-182000-
758 AM EDT MON MAY 18 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
HIGH PRESSURE WILL CONTINUE TO STRENGTHEN OFFSHORE TODAY THROUGH
TUESDAY LEADING TO INCREASED SOUTH TO SOUTHWESTERLY FLOW. EXPECT
SMALL CRAFT ADVISORIES FOR CHANNELING THIS AFTERNOON AND AGAIN
TUESDAY AFTERNOON. WINDS WILL SUBSIDE DURING THE LATE EVENING AND
OVERNIGHT PERIODS. ADDITIONAL SMALL CRAFT ADVISORIES WILL BE NEEDED
WEDNESDAY INTO THURSDAY AS A COLD FRONT CROSSES THE WATERS. THE
FRONT WILL BRING SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS
WEDNESDAY AFTERNOON AND EVENING. SPECIAL MARINE WARNINGS MAY BE
NEEDED FOR STRONGER THUNDERSTORMS DURING THIS TIME.
ANZ535-182000-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
758 AM EDT MON MAY 18 2026
TODAY
S WINDS 5 TO 10 KT. WAVES 1 FT.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
SW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
WAVES 1 FT.
TUE NIGHT
SW WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
WED
SW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
WED NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
THU
NE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY .
FRI
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
ANZ536-182000-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
758 AM EDT MON MAY 18 2026
TODAY
S WINDS 5 TO 10 KT. WAVES 1 FT.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
SW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
WED
SW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
WED NIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS.
THU
NE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY .
FRI
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
ANZ537-182000-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
758 AM EDT MON MAY 18 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM EDT THIS AFTERNOON
THROUGH LATE TONIGHT...
TODAY...SW WINDS 5 KT
BECOMING SE 10 TO 15 KT WITH GUSTS TO 20 KT
THIS AFTERNOON. WAVES 1 TO 2 FT.
TONIGHT...S WINDS 10 TO 15 KT
BECOMING SW LATE. GUSTS UP TO
20 KT. WAVES 1 TO 2 FT.
TUE
SW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
S WINDS 10 TO 15 KT. WAVES 2 FT.
WED
SW WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WED NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
THU...NE WINDS 10 TO 15 KT
DIMINISHING TO 5 TO 10 KT AFTER
MIDNIGHT. WAVES 1 TO 2 FT. SHOWERS LIKELY.
FRI
E WINDS 10 TO 15 KT. WAVES 2 FT. SHOWERS LIKELY .
ANZ530-182000-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
758 AM EDT MON MAY 18 2026
TODAY
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TONIGHT
S WINDS 5 TO 10 KT. GUSTS UP TO 20 KT UNTIL EARLY
MORNING. WAVES 1 FT.
TUE
SW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE LATE MORNING
AND AFTERNOON. WAVES 1 FT.
TUE NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
WED
SW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS.
WED NIGHT
NW WINDS 10 TO 15 KT. WAVES 1 FT. SHOWERS LIKELY.
THU...N WINDS 10 TO 15 KT
BECOMING E AROUND 5 KT. WAVES 1 FT OR
LESS. A CHANCE OF SHOWERS.
FRI
E WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS THROUGH
THE DAY, THEN SHOWERS LIKELY THROUGH THE NIGHT.
ANZ531-182000-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
758 AM EDT MON MAY 18 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM EDT THIS AFTERNOON
THROUGH LATE TONIGHT...
TODAY
S WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT OR
LESS...BUILDING TO 2 FT LATE.
TONIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
TUE
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
WAVES 1 TO 2 FT.
TUE NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
WED
SW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS.
WED NIGHT
NW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT. SHOWERS LIKELY.
THU...NE WINDS 10 TO 15 KT
BECOMING E AROUND 5 KT. WAVES 1 TO
2 FT...SUBSIDING TO 1 FT OR LESS. SHOWERS LIKELY THROUGH THE DAY,
THEN A CHANCE OF SHOWERS THROUGH THE NIGHT.
FRI
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
ANZ538-182000-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
758 AM EDT MON MAY 18 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM EDT THIS AFTERNOON
THROUGH LATE TONIGHT...
TODAY...E WINDS AROUND 5 KT
BECOMING SE THIS AFTERNOON. WAVES
1 FT OR LESS.
TONIGHT
S WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE EVENING.
WAVES 1 FT.
TUE
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TUE NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED
SW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS.
WED NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
THU
NE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS.
FRI
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
ANZ539-182000-
CHESTER RIVER TO QUEENSTOWN MD-
758 AM EDT MON MAY 18 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM EDT THIS AFTERNOON
THROUGH LATE TONIGHT...
TODAY
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TONIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
TUE
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
WAVES 1 FT.
TUE NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT.
WED
SW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS.
WED NIGHT...NW WINDS 5 KT
BECOMING N 10 TO 15 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT. SHOWERS LIKELY.
THU...N WINDS 10 TO 15 KT
BECOMING E AROUND 5 KT. WAVES 1 TO
2 FT...SUBSIDING TO FLAT. SHOWERS LIKELY THROUGH THE DAY, THEN A
CHANCE OF SHOWERS THROUGH THE NIGHT.
FRI
E WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS IN THE
MORNING, THEN SHOWERS LIKELY.
ANZ532-182000-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
758 AM EDT MON MAY 18 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM EDT THIS AFTERNOON
THROUGH LATE TONIGHT...
TODAY...S WINDS 5 TO 10 KT
INCREASING TO 15 KT WITH GUSTS TO
20 KT LATE. WAVES 1 FT OR LESS...BUILDING TO 2 FT LATE.
TONIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 TO 3 FT.
TUE
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
WAVES 1 TO 2 FT.
TUE NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
WED
SW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
WED NIGHT
N WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT. SHOWERS.
THU...N WINDS 10 TO 15 KT
BECOMING E 5 TO 10 KT. WAVES 1 TO 2 FT.
SHOWERS LIKELY .
FRI
E WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. SHOWERS LIKELY.
ANZ540-182000-
EASTERN BAY-
758 AM EDT MON MAY 18 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM EDT THIS AFTERNOON
THROUGH LATE TONIGHT...
TODAY...S WINDS 5 TO 10 KT
INCREASING TO 15 KT WITH GUSTS TO
20 KT LATE. WAVES 1 FT OR LESS.
TONIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
TUE
S WINDS 10 KT. WAVES 1 FT.
TUE NIGHT
S WINDS 10 TO 15 KT. WAVES 1 FT.
WED
SW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
WED NIGHT
N WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER MIDNIGHT.
WAVES 1 FT. SHOWERS.
THU...N WINDS 10 TO 15 KT
BECOMING E AROUND 5 KT. WAVES 1 FT OR
LESS. SHOWERS LIKELY THROUGH THE DAY, THEN A CHANCE OF SHOWERS
THROUGH THE NIGHT.
FRI
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
ANZ533-182000-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
758 AM EDT MON MAY 18 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM EDT THIS AFTERNOON
THROUGH LATE TONIGHT...
TODAY...S WINDS 5 TO 10 KT
INCREASING TO 15 KT WITH GUSTS TO
20 KT LATE. WAVES 1 TO 2 FT.
TONIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 TO 3 FT.
TUE
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
WAVES 1 TO 2 FT.
TUE NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
WED
SW WINDS 5 TO 10 KT. WAVES 1 TO 2 FT. SHOWERS LIKELY.
WED NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. SHOWERS.
THU...N WINDS 15 TO 20 KT
BECOMING E 5 TO 10 KT. WAVES 2 TO
3 FT...SUBSIDING TO 1 FT. SHOWERS LIKELY .
FRI
E WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. SHOWERS LIKELY.
ANZ541-182000-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
758 AM EDT MON MAY 18 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM EDT THIS AFTERNOON
THROUGH LATE TONIGHT...
TODAY...S WINDS 5 TO 10 KT
INCREASING TO 15 KT WITH GUSTS TO
20 KT LATE. WAVES 1 FT OR LESS.
TONIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
TUE
S WINDS 10 TO 15 KT. WAVES 1 FT.
TUE NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
WED
SW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
WED NIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SHOWERS.
THU...N WINDS 10 TO 15 KT
BECOMING E 5 KT. WAVES 1 TO 2 FT.
SHOWERS LIKELY .
FRI
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
ANZ542-182000-
PATUXENT RIVER TO BROOMES ISLAND MD-
758 AM EDT MON MAY 18 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM EDT THIS AFTERNOON
THROUGH LATE TONIGHT...
TODAY...SW WINDS 5 TO 10 KT
BECOMING SE WITH GUSTS TO 20 KT LATE.
WAVES 1 FT.
TONIGHT
S WINDS 5 TO 10 KT. GUSTS UP TO 20 KT UNTIL EARLY
MORNING. WAVES 1 FT.
TUE
SW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
S WINDS 10 KT. WAVES 1 FT.
WED
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WED NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS.
THU...N WINDS 10 TO 15 KT
BECOMING NE 5 KT. WAVES 1 FT. SHOWERS
LIKELY.
FRI
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY .
ANZ534-182000-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
758 AM EDT MON MAY 18 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM EDT THIS AFTERNOON
THROUGH LATE TONIGHT...
TODAY...SW WINDS 5 KT
BECOMING S 10 TO 15 KT WITH GUSTS TO 20 KT
THIS AFTERNOON. WAVES 1 TO 2 FT.
TONIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 TO 3 FT.
TUE
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 TO 3 FT.
TUE NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 TO
3 FT.
WED
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A CHANCE
OF SHOWERS.
WED NIGHT...W WINDS 10 TO 15 KT
BECOMING N 5 TO 10 KT AFTER
MIDNIGHT. WAVES 1 TO 2 FT. SHOWERS LIKELY.
THU...NE WINDS 10 TO 15 KT
DIMINISHING TO 5 TO 10 KT. WAVES 1 TO
2 FT. SHOWERS LIKELY.
FRI
E WINDS 10 TO 15 KT. WAVES 2 FT. SHOWERS LIKELY .
ANZ543-182000-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
758 AM EDT MON MAY 18 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM EDT THIS AFTERNOON
THROUGH LATE TONIGHT...
TODAY...S WINDS 5 TO 10 KT
INCREASING TO 15 KT WITH GUSTS TO
20 KT LATE. WAVES 1 TO 2 FT.
TONIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
TUE
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
TUE NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
WED
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
WED NIGHT...SW WINDS 10 TO 15 KT
BECOMING N 5 TO 10 KT AFTER
MIDNIGHT. GUSTS UP TO 20 KT. WAVES 1 TO 2 FT. SHOWERS LIKELY.
THU...NE WINDS 10 TO 15 KT
DIMINISHING TO 5 TO 10 KT. WAVES 1 FT.
SHOWERS LIKELY.
FRI
E WINDS 10 TO 15 KT. WAVES 1 FT. SHOWERS LIKELY .
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