013
FZUS51 KLWX 291657
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1257 PM EDT TUE SEP 29 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.
ANZ500-300800-
1257 PM EDT TUE SEP 29 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
HIGH PRESSURE WILL BUILD ACROSS THE MID-ATLANTIC THROUGH WEDNESDAY,
THEN MOVE OFFSHORE THROUGH THE END OF THE WEEK AS A COLD FRONT
APPROACHES FROM THE WEST. THIS FRONT WILL STALL NEAR THE AREA THIS
WEEKEND WHEN A WAVE OF LOW PRESSURE MAY PASS NEARBY OR TO THE SOUTH.
HIGH PRESSURE WILL LIKELY RETURN EARLY NEXT WEEK. SMALL CRAFT
ADVISORIES MAY BE NEEDED AT TIMES IN SOUTH TO SOUTHWEST FLOW
WEDNESDAY EVENING THROUGH FRIDAY AFTERNOON, THEN IN NORTHERLY FLOW
FRIDAY NIGHT INTO SATURDAY.
ANZ535-300800-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
1257 PM EDT TUE SEP 29 2026
THIS AFTERNOON
W WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF
SHOWERS.
TONIGHT
LIGHT WINDS. WAVES FLAT.
WED
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED NIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
THU
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
THU NIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI...SW WINDS 5 KT
BECOMING N AFTER MIDNIGHT. WAVES 1 FT.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS IN THE
AFTERNOON. SHOWERS LIKELY THROUGH THE NIGHT.
ANZ536-300800-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
1257 PM EDT TUE SEP 29 2026
THIS AFTERNOON
W WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF
SHOWERS.
TONIGHT
SW WINDS AROUND 5 KT. WAVES FLAT.
WED
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
THU NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
FRI...SW WINDS 5 TO 10 KT
BECOMING NW AFTER MIDNIGHT. WAVES 1 FT.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS IN THE
AFTERNOON. SHOWERS LIKELY THROUGH THE NIGHT.
ANZ537-300800-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
1257 PM EDT TUE SEP 29 2026
THIS AFTERNOON
NW WINDS 5 KT. WAVES FLAT.
TONIGHT
SW WINDS AROUND 5 KT. WAVES FLAT.
WED...SW WINDS AROUND 5 KT
BECOMING SE LATE. WAVES 1 FT OR LESS.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU
SW WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
SW WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS
THROUGH THE NIGHT. SHOWERS LIKELY AFTER MIDNIGHT.
ANZ530-300800-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
1257 PM EDT TUE SEP 29 2026
THIS AFTERNOON
NW WINDS 5 KT. WAVES FLAT.
TONIGHT
NW WINDS AROUND 5 KT. WAVES FLAT.
WED
SW WINDS AROUND 5 KT. WAVES FLAT.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
THU
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
THU NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
FRI...SW WINDS 5 TO 10 KT
BECOMING N AFTER MIDNIGHT. WAVES 1 FT.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS THROUGH
THE NIGHT. SHOWERS LIKELY AFTER MIDNIGHT.
ANZ531-300800-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
1257 PM EDT TUE SEP 29 2026
THIS AFTERNOON
W WINDS 5 KT. WAVES FLAT. A SLIGHT CHANCE OF
SHOWERS.
TONIGHT
W WINDS AROUND 5 KT. WAVES FLAT.
WED
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
FRI...SW WINDS 5 TO 10 KT
BECOMING N AFTER MIDNIGHT. WAVES 1 FT.
SAT...NE WINDS 10 TO 15 KT
BECOMING E. WAVES 1 TO 2 FT. A CHANCE
OF SHOWERS THROUGH THE NIGHT. SHOWERS LIKELY AFTER MIDNIGHT.
ANZ538-300800-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
1257 PM EDT TUE SEP 29 2026
THIS AFTERNOON
W WINDS 5 KT. WAVES FLAT. A CHANCE OF SHOWERS.
TONIGHT
LIGHT WINDS. WAVES FLAT.
WED
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED NIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
THU
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
THU NIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI...SW WINDS 5 TO 10 KT
BECOMING N AFTER MIDNIGHT. WAVES 1 FT
OR LESS.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS THROUGH
THE NIGHT. SHOWERS LIKELY AFTER MIDNIGHT.
ANZ539-300800-
CHESTER RIVER TO QUEENSTOWN MD-
1257 PM EDT TUE SEP 29 2026
THIS AFTERNOON
W WINDS 5 KT. WAVES FLAT.
TONIGHT
LIGHT WINDS. WAVES FLAT.
WED
SW WINDS AROUND 5 KT. WAVES FLAT.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU
S WINDS 5 KT. WAVES LESS THAN 1 FT.
THU NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
FRI...SW WINDS 5 KT
BECOMING N AFTER MIDNIGHT. WAVES 1 FT.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS THROUGH
THE NIGHT. SHOWERS LIKELY AFTER MIDNIGHT.
ANZ532-300800-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
1257 PM EDT TUE SEP 29 2026
THIS AFTERNOON
W WINDS 5 KT. WAVES FLAT. A SLIGHT CHANCE OF
SHOWERS.
TONIGHT
SW WINDS AROUND 5 KT. WAVES FLAT.
WED...SW WINDS AROUND 5 KT
BECOMING S LATE. WAVES 1 FT OR LESS.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
FRI...SW WINDS 5 TO 10 KT
BECOMING N AFTER MIDNIGHT. WAVES 1 FT.
SAT...NE WINDS 10 TO 15 KT
BECOMING E. WAVES 1 TO 2 FT. A CHANCE
OF SHOWERS THROUGH THE NIGHT. SHOWERS LIKELY AFTER MIDNIGHT.
ANZ540-300800-
EASTERN BAY-
1257 PM EDT TUE SEP 29 2026
THIS AFTERNOON
W WINDS 5 KT. WAVES FLAT.
TONIGHT
SW WINDS AROUND 5 KT. WAVES FLAT.
WED
SW WINDS AROUND 5 KT. WAVES FLAT.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
FRI...SW WINDS 5 TO 10 KT
BECOMING N AFTER MIDNIGHT. WAVES 1 FT.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS THROUGH
THE NIGHT. SHOWERS LIKELY AFTER MIDNIGHT.
ANZ533-300800-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
1257 PM EDT TUE SEP 29 2026
THIS AFTERNOON
W WINDS AROUND 5 KT. WAVES FLAT.
TONIGHT
SW WINDS AROUND 5 KT. WAVES FLAT.
WED...SW WINDS AROUND 5 KT
BECOMING SE LATE. WAVES 1 FT OR LESS.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
FRI...SW WINDS 5 TO 10 KT
BECOMING NW 10 TO 15 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT.
SAT...NE WINDS 10 TO 15 KT
BECOMING E. WAVES 1 TO 2 FT. A CHANCE
OF SHOWERS THROUGH THE NIGHT. SHOWERS LIKELY AFTER MIDNIGHT.
ANZ541-300800-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
1257 PM EDT TUE SEP 29 2026
THIS AFTERNOON
W WINDS 5 KT. WAVES FLAT.
TONIGHT
SW WINDS AROUND 5 KT. WAVES FLAT.
WED
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
FRI...SW WINDS 5 TO 10 KT
BECOMING NW 10 TO 15 KT AFTER MIDNIGHT.
WAVES 1 FT.
SAT...NE WINDS 10 TO 15 KT
BECOMING E 5 TO 10 KT. WAVES 1 FT. A
CHANCE OF SHOWERS THROUGH THE NIGHT. SHOWERS LIKELY AFTER MIDNIGHT.
ANZ542-300800-
PATUXENT RIVER TO BROOMES ISLAND MD-
1257 PM EDT TUE SEP 29 2026
THIS AFTERNOON
W WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
THU NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
FRI...SW WINDS 5 TO 10 KT
BECOMING NW AFTER MIDNIGHT. WAVES 1 FT.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS THROUGH
THE NIGHT. SHOWERS LIKELY AFTER MIDNIGHT.
ANZ534-300800-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
1257 PM EDT TUE SEP 29 2026
THIS AFTERNOON
NW WINDS 5 KT. WAVES FLAT.
TONIGHT
SW WINDS AROUND 5 KT. WAVES FLAT.
WED...SW WINDS AROUND 5 KT
BECOMING SE LATE. WAVES 1 FT OR LESS.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 2 FT.
THU
S WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
THU NIGHT
S WINDS 10 TO 15 KT. WAVES 2 FT.
FRI
SW WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
SAT...NE WINDS 10 TO 15 KT
BECOMING E AFTER MIDNIGHT. WAVES 1 TO
2 FT. A CHANCE OF SHOWERS.
ANZ543-300800-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
1257 PM EDT TUE SEP 29 2026
THIS AFTERNOON
W WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
SW WINDS AROUND 5 KT. WAVES FLAT.
WED
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU
S WINDS 10 KT. WAVES 1 FT.
THU NIGHT
S WINDS 10 TO 15 KT. WAVES 2 FT.
FRI
SW WINDS 5 TO 10 KT. WAVES 1 FT.
SAT...NE WINDS 10 TO 15 KT
BECOMING E AFTER MIDNIGHT. WAVES 1 FT.
A CHANCE OF SHOWERS THROUGH THE NIGHT.
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