617
FZUS51 KLWX 252057
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
457 PM EDT SAT JUL 25 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.
ANZ500-260800-
457 PM EDT SAT JUL 25 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
HIGH PRESSURE CENTERED OVERHEAD SHIFTS NORTHEAST TOWARDS NEW ENGLAND
THROUGH SUNDAY. THE NEXT FRONTAL SYSTEM APPROACHES FROM THE
NORTHWEST ON MONDAY BEFORE MOVING THROUGH ON TUESDAY. THE ASSOCIATED
COLD FRONT SHOULD CROSS THE WATERS BY LATE TUESDAY BEFORE WEAK HIGH
PRESSURE SLOWLY BUILDS IN BY MID-WEEK. SMALL CRAFT ADVISORIES MAY
BE NEEDED MONDAY EVENING INTO TUESDAY DUE TO SOUTHERLY CHANNELING
EFFECTS.
ANZ535-260800-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
457 PM EDT SAT JUL 25 2026
REST OF THIS AFTERNOON
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
SE WINDS AROUND 5 KT. WAVES FLAT.
SUN
E WINDS AROUND 5 KT. WAVES FLAT.
SUN NIGHT
S WINDS AROUND 5 KT. WAVES FLAT. A CHANCE OF SHOWERS.
MON
SW WINDS AROUND 5 KT. WAVES FLAT. A CHANCE OF SHOWERS AND
TSTMS.
MON NIGHT
S WINDS 5 KT. WAVES FLAT. A CHANCE OF SHOWERS AND
TSTMS.
TUE...SW WINDS 5 TO 10 KT
BECOMING NW AFTER MIDNIGHT. WAVES FLAT.
SHOWERS. TSTMS LIKELY THROUGH THE NIGHT, THEN A CHANCE OF SHOWERS
AND TSTMS AFTER MIDNIGHT.
WED
NW WINDS 5 TO 10 KT. WAVES FLAT. A CHANCE OF SHOWERS AND
TSTMS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ536-260800-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
457 PM EDT SAT JUL 25 2026
REST OF THIS AFTERNOON
S WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
SE WINDS AROUND 5 KT. WAVES FLAT. PATCHY FOG. VSBY 1 TO
3 NM.
SUN
E WINDS AROUND 5 KT. WAVES FLAT. PATCHY FOG. VSBY 1 TO 3 NM.
SUN NIGHT
S WINDS AROUND 5 KT. WAVES 1 FT.
MON
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
AND TSTMS.
MON NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
TUE...SW WINDS 5 TO 10 KT
BECOMING NW AFTER MIDNIGHT. WAVES 1 FT.
SHOWERS WITH TSTMS LIKELY.
WED
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ537-260800-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
457 PM EDT SAT JUL 25 2026
REST OF THIS AFTERNOON
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
S WINDS AROUND 5 KT. WAVES FLAT.
SUN
NE WINDS AROUND 5 KT. WAVES 1 FT.
SUN NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
MON
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
MON NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
TUE...S WINDS 10 TO 15 KT
BECOMING W 5 TO 10 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT. A CHANCE OF SHOWERS IN THE MORNING, THEN SHOWERS
WITH A CHANCE OF TSTMS.
WED
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.
ANZ530-260800-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
457 PM EDT SAT JUL 25 2026
REST OF THIS AFTERNOON
S WINDS 5 KT. WAVES FLAT.
TONIGHT
SE WINDS AROUND 5 KT. WAVES FLAT.
SUN
E WINDS AROUND 5 KT. WAVES FLAT.
SUN NIGHT
S WINDS AROUND 5 KT. WAVES 1 FT.
MON
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
AND TSTMS.
MON NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
TUE...SW WINDS 5 TO 10 KT
BECOMING NW AFTER MIDNIGHT. WAVES 1 FT.
SHOWERS. TSTMS LIKELY IN THE AFTERNOON, THEN A CHANCE OF TSTMS
THROUGH THE NIGHT.
WED
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS IN THE
MORNING, THEN A CHANCE OF SHOWERS AND TSTMS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ531-260800-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
457 PM EDT SAT JUL 25 2026
REST OF THIS AFTERNOON
NE WINDS 5 KT. WAVES FLAT.
TONIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
SUN
NE WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
SUN NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
MON
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
MON NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
TUE...S WINDS 10 TO 15 KT
BECOMING NW AFTER MIDNIGHT. WAVES 1 TO
2 FT. SHOWERS. A CHANCE OF TSTMS. A CHANCE OF SHOWERS AFTER
MIDNIGHT.
WED
NW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS IN
THE MORNING.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ538-260800-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
457 PM EDT SAT JUL 25 2026
REST OF THIS AFTERNOON
SE WINDS 10 KT. WAVES FLAT.
TONIGHT
SE WINDS AROUND 5 KT. WAVES FLAT.
SUN
E WINDS AROUND 5 KT. WAVES FLAT.
SUN NIGHT
S WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
MON
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
MON NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
TUE...SW WINDS 5 TO 10 KT
BECOMING NW AFTER MIDNIGHT. WAVES 1 FT.
TSTMS LIKELY THROUGH THE DAY. SHOWERS. A CHANCE OF TSTMS THROUGH THE
NIGHT.
WED
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS IN THE
MORNING, THEN A CHANCE OF SHOWERS AND TSTMS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ539-260800-
CHESTER RIVER TO QUEENSTOWN MD-
457 PM EDT SAT JUL 25 2026
REST OF THIS AFTERNOON
N WINDS 5 KT. WAVES FLAT.
TONIGHT
SE WINDS AROUND 5 KT. WAVES 1 FT.
SUN
NE WINDS AROUND 5 KT. WAVES FLAT.
SUN NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
MON
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
MON NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
TUE...S WINDS 5 TO 10 KT
BECOMING NW AFTER MIDNIGHT. WAVES 1 TO
2 FT. SHOWERS. A CHANCE OF TSTMS. A CHANCE OF SHOWERS AFTER
MIDNIGHT.
WED
NW WINDS 5 TO 10 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS IN
THE MORNING.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ532-260800-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
457 PM EDT SAT JUL 25 2026
REST OF THIS AFTERNOON
S WINDS 5 KT. WAVES FLAT.
TONIGHT
SE WINDS AROUND 5 KT. WAVES 1 FT.
SUN
E WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
SUN NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
MON...SW WINDS 5 KT
BECOMING S 10 TO 15 KT IN THE AFTERNOON.
WAVES 1 FT. A CHANCE OF SHOWERS AND TSTMS.
MON NIGHT
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF
SHOWERS AND TSTMS.
TUE...SW WINDS 10 TO 15 KT
BECOMING NW AFTER MIDNIGHT. WAVES 1 TO
2 FT. SHOWERS WITH A CHANCE OF TSTMS.
WED
NW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS IN
THE MORNING.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ540-260800-
EASTERN BAY-
457 PM EDT SAT JUL 25 2026
REST OF THIS AFTERNOON
SW WINDS 5 KT. WAVES FLAT.
TONIGHT
SE WINDS AROUND 5 KT. WAVES 1 FT.
SUN
NE WINDS AROUND 5 KT. WAVES FLAT.
SUN NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
MON
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
MON NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
TUE...S WINDS 5 TO 10 KT
BECOMING NW AFTER MIDNIGHT. WAVES 1 TO
2 FT. SHOWERS WITH A CHANCE OF TSTMS.
WED
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.
ANZ533-260800-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
457 PM EDT SAT JUL 25 2026
REST OF THIS AFTERNOON
NW WINDS 5 KT. WAVES FLAT.
TONIGHT
E WINDS AROUND 5 KT. WAVES 1 FT.
SUN
NE WINDS AROUND 5 KT. WAVES 1 FT.
SUN NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
MON...SW WINDS 5 KT
BECOMING S 10 TO 15 KT WITH GUSTS TO 20 KT IN
THE AFTERNOON. WAVES 1 FT. A CHANCE OF SHOWERS AND TSTMS.
MON NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A
CHANCE OF SHOWERS AND TSTMS.
TUE...S WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. WAVES 2 TO
3 FT...SUBSIDING TO 1 FT AFTER MIDNIGHT. SHOWERS WITH A CHANCE OF
TSTMS.
WED
NW WINDS 10 TO 15 KT. WAVES 2 FT. A CHANCE OF SHOWERS IN THE
MORNING.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ541-260800-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
457 PM EDT SAT JUL 25 2026
REST OF THIS AFTERNOON
NW WINDS 5 KT. WAVES FLAT.
TONIGHT
E WINDS AROUND 5 KT. WAVES 1 FT.
SUN
NE WINDS AROUND 5 KT. WAVES FLAT.
SUN NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
MON
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
MON NIGHT
S WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF SHOWERS
AND TSTMS.
TUE...S WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. WAVES 1 TO
2 FT. SHOWERS WITH A CHANCE OF TSTMS.
WED
NW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS IN
THE MORNING.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ542-260800-
PATUXENT RIVER TO BROOMES ISLAND MD-
457 PM EDT SAT JUL 25 2026
REST OF THIS AFTERNOON
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
E WINDS AROUND 5 KT. WAVES FLAT.
SUN
NE WINDS AROUND 5 KT. WAVES FLAT.
SUN NIGHT
S WINDS AROUND 5 KT. WAVES FLAT. A CHANCE OF SHOWERS.
MON
S WINDS 5 TO 10 KT. WAVES FLAT. A CHANCE OF SHOWERS AND
TSTMS.
MON NIGHT
S WINDS 5 TO 10 KT. WAVES FLAT. A CHANCE OF SHOWERS AND
TSTMS.
TUE...S WINDS 10 TO 15 KT
BECOMING W 5 TO 10 KT AFTER MIDNIGHT.
WAVES FLAT. A CHANCE OF TSTMS THROUGH THE DAY. SHOWERS. TSTMS LIKELY
THROUGH THE NIGHT.
WED
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
IN THE MORNING.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ534-260800-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
457 PM EDT SAT JUL 25 2026
REST OF THIS AFTERNOON
W WINDS 5 KT. WAVES FLAT.
TONIGHT
E WINDS AROUND 5 KT. WAVES 1 FT.
SUN
N WINDS AROUND 5 KT. WAVES 1 FT.
SUN NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
MON...SW WINDS 5 KT
BECOMING S 10 TO 15 KT WITH GUSTS TO 20 KT IN
THE AFTERNOON. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS AND TSTMS.
MON NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A
CHANCE OF SHOWERS AND TSTMS.
TUE...S WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. WAVES 2 TO
3 FT. A CHANCE OF SHOWERS IN THE MORNING, THEN SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
WED
NW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS IN
THE MORNING.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ543-260800-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
457 PM EDT SAT JUL 25 2026
REST OF THIS AFTERNOON
NW WINDS 5 KT. WAVES FLAT.
TONIGHT
E WINDS 5 KT. WAVES FLAT.
SUN
N WINDS 5 KT. WAVES LESS THAN 1 FT.
SUN NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
MON
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
MON NIGHT
S WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
TUE...S WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. WAVES 2 FT.
A CHANCE OF SHOWERS IN THE MORNING, THEN SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
WED
NW WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF SHOWERS IN THE
MORNING.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
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