406
FZUS51 KLWX 131827
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
227 PM EDT TUE OCT 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-
227 PM EDT TUE OCT 13 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
HIGH PRESSURE BUILDS TO THE SOUTH OF THE WATERS THROUGH THIS EVENING
BEFORE SHIFTING OFFSHORE WEDNESDAY MORNING. SOUTHERLY CHANNELING
COULD RESULT IN BRIEF PERIODS OF SMALL CRAFT ADVISORY CONDITIONS. A
DRY COLD FRONT WILL PUSH SOUTHWARD WEDNESDAY AFTERNOON INTO
WEDNESDAY NIGHT, THEN STALL NEAR OR JUST SOUTH OF THE REGION ON
THURSDAY. SMALL CRAFT ADVISORIES MAY BE NEEDED WEDNESDAY NIGHT INTO
THURSDAY. A STRONGER COLD FRONT MOVES ACROSS THE AREA FRIDAY, WITH
GALE CONDITIONS POSSIBLE FRIDAY NIGHT INTO SATURDAY.
ANZ535-140800-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
227 PM EDT TUE OCT 13 2026
THIS AFTERNOON
S WINDS 5 TO 10 KT. WAVES 1 FT.
TONIGHT
SW WINDS AROUND 5 KT. WAVES 1 FT.
WED
SW WINDS AROUND 5 KT. WAVES 1 FT.
WED NIGHT
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
THU
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
THU NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI...SW WINDS 10 KT
BECOMING W 15 TO 20 KT IN THE AFTERNOON,
THEN BECOMING NW. WAVES 1 TO 2 FT. SHOWERS LIKELY THROUGH THE NIGHT.
SAT...NW WINDS 15 TO 20 KT
DIMINISHING TO AROUND 5 KT AFTER
MIDNIGHT. WAVES 1 FT.
ANZ536-140800-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
227 PM EDT TUE OCT 13 2026
THIS AFTERNOON
S WINDS 5 TO 10 KT. WAVES 1 FT.
TONIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
WED
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
WED NIGHT...W WINDS 5 KT
BECOMING N AFTER MIDNIGHT. WAVES 1 FT.
THU
NE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
THU NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
FRI...SW WINDS 10 TO 15 KT
INCREASING TO 20 TO 25 KT IN THE
AFTERNOON, THEN BECOMING NW. WAVES 1 TO 2 FT...BUILDING TO 3 FT.
SHOWERS LIKELY THROUGH THE NIGHT.
SAT...NW WINDS 15 TO 20 KT
DIMINISHING TO 5 KT AFTER MIDNIGHT.
WAVES 2 TO 3 FT...SUBSIDING TO 1 FT.
ANZ537-140800-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
227 PM EDT TUE OCT 13 2026
THIS AFTERNOON
S WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
WED NIGHT...SW WINDS 5 KT
BECOMING N AFTER MIDNIGHT. WAVES 1 FT.
THU
NE WINDS 10 TO 15 KT. WAVES 2 FT. A CHANCE OF SHOWERS.
THU NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
FRI...SW WINDS 10 TO 15 KT
INCREASING TO 20 TO 25 KT IN THE
AFTERNOON, THEN BECOMING NW 25 TO 30 KT. WAVES 2 TO 3 FT...BUILDING
TO 4 FT. SHOWERS LIKELY THROUGH THE NIGHT.
SAT...NW WINDS 20 TO 25 KT
BECOMING N 10 TO 15 KT AFTER MIDNIGHT.
WAVES 3 FT...SUBSIDING TO 2 FT AFTER MIDNIGHT.
ANZ530-140800-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
227 PM EDT TUE OCT 13 2026
THIS AFTERNOON
SW WINDS 10 KT. WAVES 1 FT.
TONIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
THU
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
THU NIGHT
SE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A
CHANCE OF SHOWERS.
FRI...SW WINDS 20 TO 25 KT
BECOMING NW. WAVES 2 TO 3 FT. A CHANCE
OF SHOWERS IN THE MORNING, THEN SHOWERS LIKELY THROUGH THE NIGHT.
SAT...NW WINDS 20 TO 25 KT
DIMINISHING TO 10 TO 15 KT. WAVES 1 TO
2 FT.
ANZ531-140800-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
227 PM EDT TUE OCT 13 2026
THIS AFTERNOON
S WINDS 10 KT. WAVES 1 TO 2 FT.
TONIGHT
SW WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
WED
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT...W WINDS 5 KT
BECOMING N 10 TO 15 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
THU...NE WINDS 10 TO 15 KT
BECOMING E 5 TO 10 KT IN THE
AFTERNOON. WAVES 1 TO 2 FT. SHOWERS LIKELY.
THU NIGHT...SE WINDS 5 TO 10 KT
BECOMING S 15 TO 20 KT AFTER
MIDNIGHT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
FRI...SW WINDS 20 TO 25 KT
BECOMING NW 25 TO 30 KT. WAVES 2 TO
3 FT...BUILDING TO 4 FT. A CHANCE OF SHOWERS IN THE MORNING, THEN
SHOWERS LIKELY THROUGH THE NIGHT.
SAT...NW WINDS 25 TO 30 KT
DIMINISHING TO 5 TO 10 KT. WAVES
3 FT...SUBSIDING TO 1 FT AFTER MIDNIGHT.
ANZ538-140800-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
227 PM EDT TUE OCT 13 2026
THIS AFTERNOON
S WINDS 5 TO 10 KT. WAVES 1 FT.
TONIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
WED
W WINDS 5 KT. WAVES LESS THAN 1 FT.
WED NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF
SHOWERS.
THU
NE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
THU NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI...SW WINDS 10 TO 15 KT
BECOMING NW 15 TO 20 KT. WAVES 1 TO
2 FT. A CHANCE OF SHOWERS IN THE MORNING, THEN SHOWERS LIKELY
THROUGH THE NIGHT.
SAT...NW WINDS 15 TO 20 KT
DIMINISHING TO 5 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT.
ANZ539-140800-
CHESTER RIVER TO QUEENSTOWN MD-
227 PM EDT TUE OCT 13 2026
THIS AFTERNOON
S WINDS 10 KT. WAVES 1 FT.
TONIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
WED NIGHT...W WINDS 5 KT
BECOMING N AFTER MIDNIGHT. WAVES 1 FT. A
CHANCE OF SHOWERS.
THU
NE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
THU NIGHT
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER MIDNIGHT.
WAVES 1 FT. A CHANCE OF SHOWERS.
FRI...S WINDS 15 KT
BECOMING SW 20 TO 25 KT IN THE AFTERNOON,
THEN BECOMING NW. WAVES 2 TO 3 FT... BUILDING TO 4 FT. A CHANCE OF
SHOWERS IN THE MORNING, THEN SHOWERS LIKELY THROUGH THE NIGHT.
SAT...NW WINDS 20 TO 25 KT
DIMINISHING TO 10 TO 15 KT. WAVES
3 FT...SUBSIDING TO 1 TO 2 FT.
ANZ532-140800-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
227 PM EDT TUE OCT 13 2026
THIS AFTERNOON
S WINDS 10 KT. WAVES 1 FT.
TONIGHT
SW WINDS 5 TO 10 KT. WAVES 2 FT.
WED
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
WED NIGHT...SW WINDS 5 KT
BECOMING N 10 TO 15 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT.
THU
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
SHOWERS LIKELY.
THU NIGHT
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT. WAVES 1 TO
2 FT. A CHANCE OF SHOWERS.
FRI...SW WINDS 20 TO 25 KT
BECOMING NW 25 TO 30 KT. WAVES 3 FT. A
CHANCE OF SHOWERS IN THE MORNING. SHOWERS LIKELY THROUGH THE NIGHT.
SAT...NW WINDS 25 TO 30 KT
DIMINISHING TO 15 TO 20 KT. WAVES
3 FT...SUBSIDING TO 2 FT AFTER MIDNIGHT.
ANZ540-140800-
EASTERN BAY-
227 PM EDT TUE OCT 13 2026
THIS AFTERNOON
S WINDS 10 KT. WAVES 1 FT.
TONIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
WED NIGHT...W WINDS 5 KT
BECOMING N AFTER MIDNIGHT. WAVES 1 FT.
THU
NE WINDS 10 TO 15 KT. WAVES 1 FT. SHOWERS LIKELY.
THU NIGHT
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER MIDNIGHT.
WAVES 1 FT. A CHANCE OF SHOWERS.
FRI...S WINDS 15 KT
BECOMING SW 20 TO 25 KT IN THE AFTERNOON,
THEN BECOMING NW 25 TO 30 KT. WAVES 2 TO 3 FT. A CHANCE OF SHOWERS
IN THE MORNING. SHOWERS LIKELY THROUGH THE NIGHT.
SAT...NW WINDS 20 TO 25 KT
BECOMING N 5 TO 10 KT AFTER MIDNIGHT.
WAVES 2 TO 3 FT...SUBSIDING TO 1 FT AFTER MIDNIGHT.
ANZ533-140800-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
227 PM EDT TUE OCT 13 2026
THIS AFTERNOON
S WINDS 10 KT. WAVES 1 FT.
TONIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
WED NIGHT...SW WINDS 5 KT
BECOMING N 10 TO 15 KT WITH GUSTS TO
20 KT AFTER MIDNIGHT. WAVES 1 TO 2 FT.
THU
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. SHOWERS
LIKELY.
THU NIGHT
SE WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF
SHOWERS.
FRI...SW WINDS 15 TO 20 KT
INCREASING TO 25 TO 30 KT IN THE
AFTERNOON, THEN BECOMING NW. WAVES 2 FT... BUILDING TO 4 FT. A
CHANCE OF SHOWERS IN THE MORNING. SHOWERS LIKELY THROUGH THE NIGHT.
SAT...NW WINDS 25 TO 30 KT
BECOMING N 10 TO 15 KT AFTER MIDNIGHT.
WAVES 4 FT...SUBSIDING TO 2 FT AFTER MIDNIGHT.
ANZ541-140800-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
227 PM EDT TUE OCT 13 2026
THIS AFTERNOON
S WINDS 10 KT. WAVES 1 FT.
TONIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
WED NIGHT...SW WINDS 5 KT
BECOMING N 10 TO 15 KT AFTER MIDNIGHT.
WAVES 1 FT.
THU
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. SHOWERS
LIKELY.
THU NIGHT
SE WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI...SW WINDS 20 TO 25 KT...BECOMING NW 25 TO 30 KT. WAVES 2 FT
BUILDING TO 4 FT. A CHANCE OF SHOWERS IN THE MORNING. SHOWERS LIKELY
THROUGH THE NIGHT.
SAT...NW WINDS 25 TO 30 KT...BECOMING N 15 TO 20 KT. WAVES 3 FT
SUBSIDING TO 2 FT AFTER MIDNIGHT.
ANZ542-140800-
PATUXENT RIVER TO BROOMES ISLAND MD-
227 PM EDT TUE OCT 13 2026
THIS AFTERNOON
S WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
WED NIGHT...SW WINDS AROUND 5 KT
BECOMING N AFTER MIDNIGHT. WAVES
1 FT.
THU
NE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
THU NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
FRI...SW WINDS 15 TO 20 KT
BECOMING NW. WAVES 1 TO 2 FT. SHOWERS
LIKELY THROUGH THE NIGHT.
SAT...NW WINDS 15 TO 20 KT
DIMINISHING TO 5 TO 10 KT AFTER
MIDNIGHT. WAVES 1 TO 2 FT.
ANZ534-140800-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
227 PM EDT TUE OCT 13 2026
THIS AFTERNOON
S WINDS 10 KT. WAVES 1 TO 2 FT.
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
WED
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT...SW WINDS 5 TO 10 KT
BECOMING N AFTER MIDNIGHT. WAVES
1 FT.
THU
NE WINDS 10 TO 15 KT. WAVES 2 FT. A CHANCE OF SHOWERS.
THU NIGHT
SE WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
FRI...SW WINDS 20 TO 25 KT...BECOMING NW 25 TO 35 KT. WAVES 3 FT
BUILDING TO 6 FT. SHOWERS LIKELY THROUGH THE NIGHT. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
SAT...NW WINDS 25 TO 30 KT
BECOMING N 15 TO 20 KT AFTER MIDNIGHT.
WAVES 5 FT...SUBSIDING TO 3 FT.
ANZ543-140800-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
227 PM EDT TUE OCT 13 2026
THIS AFTERNOON
S WINDS 10 KT. WAVES 1 FT.
TONIGHT
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.
WED NIGHT...SW WINDS 5 TO 10 KT
BECOMING N AFTER MIDNIGHT. WAVES
1 FT.
THU
NE WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
THU NIGHT
SE WINDS 10 TO 15 KT. WAVES 1 FT.
FRI...SW WINDS 20 TO 25 KT
BECOMING NW 25 TO 30 KT. WAVES 2 TO
3 FT. SHOWERS LIKELY THROUGH THE NIGHT. A CHANCE OF SHOWERS AFTER
MIDNIGHT.
SAT...NW WINDS 25 TO 30 KT
BECOMING N 10 TO 15 KT AFTER MIDNIGHT.
WAVES 2 TO 3 FT.
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