763
FZUS51 KLWX 311827
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
227 PM EDT FRI JUL 31 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.
ANZ500-010800-
227 PM EDT FRI JUL 31 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
WEAK HIGH PRESSURE WILL REMAIN NEARBY THROUGH SATURDAY AS LOW
PRESSURE MOVES FURTHER AWAY FROM NEW ENGLAND. THE NEXT LOW PRESSURE
SYSTEM WILL APPROACH FROM THE OHIO VALLEY SUNDAY BEFORE CROSSING
WITH A SERIES OF FRONTS EARLY NEXT WEEK. SMALL CRAFT ADVISORIES MAY
BE NEEDED FOR PORTIONS OF THE WATERS AT TIMES FROM SATURDAY
AFTERNOON THROUGH MONDAY.
ANZ535-010800-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
227 PM EDT FRI JUL 31 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY AFTERNOON THROUGH
SATURDAY EVENING...
THIS AFTERNOON
W WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
S WINDS AROUND 5 KT. WAVES 1 FT.
SAT
S WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON. WAVES
1 FT.
SAT NIGHT
S WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SUN
S WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A CHANCE
OF SHOWERS.
SUN NIGHT
S WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE EVENING.
WAVES 1 FT. SHOWERS WITH A CHANCE OF TSTMS.
MON
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS. A CHANCE OF TSTMS
THROUGH THE NIGHT, THEN A CHANCE OF SHOWERS AFTER MIDNIGHT.
TUE
S WINDS AROUND 5 KT. WAVES 1 FT. SHOWERS LIKELY WITH A CHANCE
OF TSTMS THROUGH THE NIGHT. A CHANCE OF SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ536-010800-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
227 PM EDT FRI JUL 31 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY AFTERNOON THROUGH
SATURDAY EVENING...
THIS AFTERNOON
W WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
S WINDS AROUND 5 KT. WAVES 1 FT.
SAT
S WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT
SE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SUN
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A CHANCE
OF SHOWERS.
SUN NIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE EVENING.
WAVES 1 FT. SHOWERS WITH A CHANCE OF TSTMS.
MON
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS. A CHANCE OF TSTMS
THROUGH THE NIGHT, THEN A CHANCE OF SHOWERS AFTER MIDNIGHT.
TUE
S WINDS AROUND 5 KT. WAVES 1 FT. SHOWERS LIKELY WITH A CHANCE
OF TSTMS THROUGH THE NIGHT. A CHANCE OF SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ537-010800-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
227 PM EDT FRI JUL 31 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY AFTERNOON THROUGH
LATE SATURDAY NIGHT...
THIS AFTERNOON
N WINDS 5 KT. WAVES FLAT.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
SAT NIGHT
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SUN...S WINDS 5 TO 10 KT
BECOMING SE 15 TO 20 KT IN THE
AFTERNOON. WAVES 1 FT...BUILDING TO 3 FT IN THE AFTERNOON. A CHANCE
OF SHOWERS.
SUN NIGHT...S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 3 FT
SUBSIDING TO 1 FT AFTER MIDNIGHT. SHOWERS WITH A CHANCE OF TSTMS.
MON
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS. A CHANCE OF TSTMS
THROUGH THE NIGHT, THEN A CHANCE OF SHOWERS AFTER MIDNIGHT.
TUE
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A CHANCE
OF TSTMS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ530-010800-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
227 PM EDT FRI JUL 31 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY AFTERNOON THROUGH
LATE SATURDAY NIGHT...
THIS AFTERNOON
W WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
S WINDS AROUND 5 KT. WAVES 1 FT.
SAT
S WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SUN
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE
OF TSTMS.
MON
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS. A CHANCE OF TSTMS
THROUGH THE NIGHT.
TUE
S WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS. A
CHANCE OF TSTMS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ531-010800-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
227 PM EDT FRI JUL 31 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY AFTERNOON THROUGH
LATE SATURDAY NIGHT...
THIS AFTERNOON
SE WINDS 5 KT. WAVES FLAT.
TONIGHT
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
SAT
S WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON. WAVES
1 TO 2 FT.
SAT NIGHT
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SUN
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
SUN NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. SHOWERS WITH A CHANCE OF TSTMS.
MON
S WINDS 5 TO 10 KT. WAVES 1 TO 2 FT. SHOWERS. A CHANCE OF
TSTMS THROUGH THE NIGHT, THEN A CHANCE OF SHOWERS AFTER MIDNIGHT.
TUE
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS. A CHANCE
OF TSTMS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ538-010800-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
227 PM EDT FRI JUL 31 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY AFTERNOON THROUGH
LATE SATURDAY NIGHT...
THIS AFTERNOON
SE WINDS 5 KT. WAVES FLAT.
TONIGHT
S WINDS AROUND 5 KT. WAVES FLAT.
SAT
S WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON. WAVES
1 FT OR LESS.
SAT NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SUN
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SUN NIGHT
S WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SHOWERS WITH A CHANCE OF TSTMS.
MON
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. SHOWERS. A CHANCE OF
TSTMS THROUGH THE NIGHT, THEN A CHANCE OF SHOWERS AFTER MIDNIGHT.
TUE
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS.
A CHANCE OF TSTMS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ539-010800-
CHESTER RIVER TO QUEENSTOWN MD-
227 PM EDT FRI JUL 31 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY AFTERNOON THROUGH
LATE SATURDAY NIGHT...
THIS AFTERNOON
NW WINDS 5 KT. WAVES FLAT.
TONIGHT
S WINDS AROUND 5 KT. WAVES FLAT.
SAT
S WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
SUN
S WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE
OF TSTMS.
MON
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS. A CHANCE OF TSTMS
THROUGH THE NIGHT.
TUE
S WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS. A
CHANCE OF TSTMS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ532-010800-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
227 PM EDT FRI JUL 31 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY AFTERNOON THROUGH
LATE SATURDAY NIGHT...
THIS AFTERNOON
E WINDS 5 KT. WAVES FLAT.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
SAT...S WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT
BUILDING TO 3 FT IN THE AFTERNOON.
SAT NIGHT
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
SUN
S WINDS 10 TO 15 KT. GUSTS UP TO 25 KT IN THE AFTERNOON.
WAVES 2 TO 3 FT.
SUN NIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 25 KT IN THE EVENING.
WAVES 2 TO 3 FT. SHOWERS WITH A CHANCE OF TSTMS.
MON
S WINDS 5 TO 10 KT. WAVES 1 TO 2 FT. SHOWERS. A CHANCE OF
TSTMS THROUGH THE NIGHT, THEN A CHANCE OF SHOWERS AFTER MIDNIGHT.
TUE
S 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.
ANZ540-010800-
EASTERN BAY-
227 PM EDT FRI JUL 31 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY AFTERNOON THROUGH
LATE SATURDAY NIGHT...
THIS AFTERNOON
NW WINDS 5 KT. WAVES FLAT.
TONIGHT
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
SAT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SAT NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
SUN
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SUN NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SHOWERS WITH A CHANCE OF TSTMS.
MON
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS. A CHANCE OF TSTMS
THROUGH THE NIGHT.
TUE
S WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS. A
CHANCE OF TSTMS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ533-010800-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
227 PM EDT FRI JUL 31 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY AFTERNOON THROUGH
LATE SATURDAY NIGHT...
THIS AFTERNOON
NE WINDS 5 KT. WAVES FLAT.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
SAT...S WINDS 10 TO 15 KT
BECOMING SE 15 TO 20 KT WITH GUSTS TO
25 KT LATE. WAVES 1 FT...BUILDING TO 3 FT IN THE AFTERNOON.
SAT NIGHT
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
SUN
S WINDS 15 TO 20 KT. GUSTS UP TO 25 KT IN THE AFTERNOON.
WAVES 2 TO 3 FT. A CHANCE OF SHOWERS.
SUN NIGHT
S WINDS 15 TO 20 KT. GUSTS UP TO 25 KT IN THE EVENING.
WAVES 2 TO 3 FT. SHOWERS WITH A CHANCE OF TSTMS.
MON
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. SHOWERS. A CHANCE OF
TSTMS THROUGH THE NIGHT, THEN A CHANCE OF SHOWERS AFTER MIDNIGHT.
TUE
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS. A CHANCE
OF TSTMS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ541-010800-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
227 PM EDT FRI JUL 31 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY AFTERNOON THROUGH
LATE SATURDAY NIGHT...
THIS AFTERNOON
NW WINDS 5 KT. WAVES FLAT.
TONIGHT
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
SAT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
SAT NIGHT
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SUN
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
SUN NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. SHOWERS WITH A CHANCE OF TSTMS.
MON
S WINDS 10 TO 15 KT. WAVES 1 FT. SHOWERS. A CHANCE OF TSTMS
THROUGH THE NIGHT.
TUE
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS. A CHANCE
OF TSTMS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ542-010800-
PATUXENT RIVER TO BROOMES ISLAND MD-
227 PM EDT FRI JUL 31 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY AFTERNOON THROUGH
LATE SATURDAY NIGHT...
THIS AFTERNOON
NE WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
SAT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SAT NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT.
SUN
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A CHANCE
OF SHOWERS.
SUN NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SHOWERS WITH A CHANCE OF TSTMS.
MON
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS. A CHANCE OF TSTMS
THROUGH THE NIGHT, THEN A CHANCE OF SHOWERS AFTER MIDNIGHT.
TUE
S WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS IN
THE MORNING, THEN SHOWERS LIKELY WITH A CHANCE OF TSTMS THROUGH THE
NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ534-010800-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
227 PM EDT FRI JUL 31 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY AFTERNOON THROUGH
LATE SATURDAY NIGHT...
THIS AFTERNOON
NW WINDS 5 KT. WAVES FLAT.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
SAT...S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT
BUILDING TO 3 FT IN THE AFTERNOON.
SAT NIGHT
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
SUN
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO 3 FT. A
CHANCE OF SHOWERS.
SUN NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
SHOWERS WITH A CHANCE OF TSTMS.
MON
S WINDS 10 TO 15 KT. WAVES 2 FT. SHOWERS. A CHANCE OF TSTMS.
A CHANCE OF SHOWERS AFTER MIDNIGHT.
TUE
S WINDS 5 TO 10 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS. A
CHANCE OF TSTMS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ543-010800-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
227 PM EDT FRI JUL 31 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY AFTERNOON THROUGH
LATE SATURDAY NIGHT...
THIS AFTERNOON
W WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SAT NIGHT
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SUN
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
SUN NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
SHOWERS WITH A CHANCE OF TSTMS.
MON
SW WINDS 10 TO 15 KT. WAVES 2 FT. SHOWERS IN THE MORNING,
THEN SHOWERS WITH A CHANCE OF TSTMS.
TUE
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
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