636
FZUS51 KLWX 132318
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
718 PM EDT MON JUL 13 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.
ANZ500-140800-
718 PM EDT MON JUL 13 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
HIGH PRESSURE WILL REMAIN OVERHEAD THROUGH TUESDAY. A PERIOD OF
SOUTHERLY CHANNELING MAY RESULT IN BRIEF SMALL CRAFT ADVISORY
CONDITIONS TUESDAY AFTERNOON AND EVENING. HIGH PRESSURE WILL SHIFT
TO THE SOUTH THE SECOND HALF OF THE WEEK. A WEAK COLD FRONT WILL
DROP SOUTHWARD THURSDAY INTO FRIDAY, THEN A STRONGER COLD FRONT WILL
APPROACH FROM THE NORTH SATURDAY.
ANZ535-140800-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
718 PM EDT MON JUL 13 2026
TONIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
TUE NIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
WED
W WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
THU
NW WINDS AROUND 5 KT. WAVES 1 FT.
THU NIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT.
FRI...NW WINDS AROUND 5 KT
BECOMING SW. WAVES 1 FT.
SAT
SW 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.
ANZ536-140800-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
718 PM EDT MON JUL 13 2026
TONIGHT...SE WINDS 5 TO 10 KT
BECOMING SW LATE. WAVES 1 FT OR
LESS.
TUE
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
TUE NIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
WED
W WINDS AROUND 5 KT. WAVES 1 FT.
WED NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
THU
NW WINDS AROUND 5 KT. WAVES 1 FT.
THU NIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI
W WINDS AROUND 5 KT. WAVES 1 FT.
SAT
SW 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.
ANZ537-140800-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
718 PM EDT MON JUL 13 2026
TONIGHT...SE WINDS 5 TO 10 KT
BECOMING SW LATE. WAVES 1 FT OR
LESS.
TUE
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
TUE NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
WED
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
THU
W WINDS AROUND 5 KT. WAVES 1 FT.
THU NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
FRI...N WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT.
SAT
SW 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.
ANZ530-140800-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
718 PM EDT MON JUL 13 2026
TONIGHT...S WINDS 5 TO 10 KT
BECOMING SW LATE. WAVES 1 FT.
TUE
SW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
SW WINDS 10 TO 15 KT. WAVES 1 FT.
WED
W WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
THU
W WINDS AROUND 5 KT. WAVES 1 FT.
THU NIGHT
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
SAT
SW 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.
ANZ531-140800-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
718 PM EDT MON JUL 13 2026
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
BECOMING 10 KT LATE. WAVES 1 TO
2 FT.
WED
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
THU...NW WINDS AROUND 5 KT
BECOMING SW IN THE AFTERNOON. WAVES
1 FT OR LESS.
THU NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
FRI...NW WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT.
SAT
SW 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.
ANZ538-140800-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
718 PM EDT MON JUL 13 2026
TONIGHT
S WINDS 5 KT. WAVES LESS THAN 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
W WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
THU
W WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
THU NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
FRI
W WINDS 5 KT. WAVES LESS THAN 1 FT.
SAT
SW 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.
ANZ539-140800-
CHESTER RIVER TO QUEENSTOWN MD-
718 PM EDT MON JUL 13 2026
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
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.
WED NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
THU
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
THU NIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
SAT
SW 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.
ANZ532-140800-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
718 PM EDT MON JUL 13 2026
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TUE NIGHT
SW WINDS 10 KT. WAVES 2 FT.
WED
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
THU...N WINDS 5 KT
BECOMING SW IN THE AFTERNOON. WAVES 1 FT.
THU NIGHT...SW WINDS 5 TO 10 KT
BECOMING NW AFTER MIDNIGHT. WAVES
1 FT.
FRI...NE WINDS 5 KT
BECOMING S. WAVES 1 FT.
SAT
S 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.
ANZ540-140800-
EASTERN BAY-
718 PM EDT MON JUL 13 2026
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TUE
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TUE NIGHT
SW WINDS 10 KT. WAVES 1 FT.
WED
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
THU
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
THU NIGHT...SW WINDS 5 TO 10 KT
BECOMING NW AFTER MIDNIGHT. WAVES
1 FT.
FRI
W WINDS 5 KT. WAVES LESS THAN 1 FT.
SAT
SW 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.
ANZ533-140800-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
718 PM EDT MON JUL 13 2026
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
TUE...SW WINDS AROUND 5 KT
BECOMING S LATE. WAVES 1 FT OR LESS.
TUE NIGHT
SW WINDS 10 KT. WAVES 1 FT.
WED
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
THU...NW WINDS 5 KT
BECOMING SW IN THE AFTERNOON. WAVES 1 FT.
THU NIGHT...SW WINDS 5 TO 10 KT
BECOMING NW AFTER MIDNIGHT. WAVES
1 FT.
FRI...NE WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT.
SAT
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS AND
TSTMS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ541-140800-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
718 PM EDT MON JUL 13 2026
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TUE
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TUE NIGHT
SW WINDS 10 TO 15 KT. WAVES 1 FT.
WED
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
THU
W WINDS AROUND 5 KT. WAVES 1 FT.
THU NIGHT...SW WINDS 5 TO 10 KT
BECOMING NW AFTER MIDNIGHT. WAVES
1 FT.
FRI...N WINDS 5 KT
BECOMING S. WAVES 1 FT OR LESS.
SAT
SW 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.
ANZ542-140800-
PATUXENT RIVER TO BROOMES ISLAND MD-
718 PM EDT MON JUL 13 2026
TONIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE...SW WINDS AROUND 5 KT
BECOMING S LATE. 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.
WED NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
THU
W WINDS AROUND 5 KT. WAVES 1 FT.
THU NIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI...NE WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT.
SAT
SW 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.
ANZ534-140800-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
718 PM EDT MON JUL 13 2026
TONIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
TUE...NW WINDS AROUND 5 KT
BECOMING S LATE. WAVES 1 FT OR LESS.
TUE NIGHT...S WINDS 10 TO 15 KT
BECOMING SW LATE. WAVES 2 FT.
WED
SW WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
WED NIGHT
SW WINDS 10 TO 15 KT. WAVES 2 FT.
THU...NW WINDS 5 TO 10 KT
BECOMING S IN THE AFTERNOON. WAVES
1 FT.
THU NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
FRI...N WINDS 5 TO 10 KT
BECOMING S. WAVES 1 TO 2 FT.
SAT
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS AND
TSTMS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ543-140800-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
718 PM EDT MON JUL 13 2026
TONIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TUE...NW WINDS AROUND 5 KT
BECOMING SW LATE. WAVES 1 FT OR LESS.
TUE NIGHT
SW WINDS 10 TO 15 KT. WAVES 1 FT.
WED
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
SW WINDS 10 TO 15 KT. WAVES 1 FT.
THU
W WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
FRI...NW WINDS 5 TO 10 KT
BECOMING S 10 TO 15 KT. WAVES 1 FT.
SAT
SW WINDS 10 TO 15 KT. WAVES 1 TO 2 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.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page