415
FZUS51 KLWX 252057
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
457 PM EDT FRI SEP 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 FRI SEP 25 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
A NOR'EASTER WILL DEVELOP OFFSHORE AND INTENSIFY AS IT LIFTS
NORTHWARD INTO THIS WEEKEND. HIGH PRESSURE WILL EVENTUALLY BUILD
INTO THE AREA EARLY NEXT WEEK. SMALL CRAFT ADVISORIES AND
POTENTIALLY GALE CONDITIONS WILL CONTINUE THROUGH SUNDAY. ADVISORIES
MAY BE NEEDED THROUGH MONDAY.
ANZ535-260800-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
457 PM EDT FRI SEP 25 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY AFTERNOON
REST OF THIS AFTERNOON
N WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
2 FT.
TONIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SAT
N WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT. SHOWERS
LIKELY.
SAT NIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT. A
CHANCE OF SHOWERS.
SUN...NW WINDS 10 TO 15 KT. GUSTS UP TO 30 KT
DIMINISHING TO
20 KT IN THE AFTERNOON. WAVES 1 FT. SHOWERS LIKELY.
SUN NIGHT...NW WINDS 10 TO 15 KT. GUSTS UP TO 30 KT
DIMINISHING
TO 20 KT AFTER MIDNIGHT. WAVES 1 FT. A CHANCE OF SHOWERS.
MON
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
ANZ536-260800-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
457 PM EDT FRI SEP 25 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY AFTERNOON
REST OF THIS AFTERNOON
N WINDS 15 KT WITH GUSTS TO 25 KT. WAVES
2 FT.
TONIGHT
N WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 FT.
SAT
N WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 FT. A CHANCE
OF SHOWERS.
SAT NIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 TO
2 FT. A CHANCE OF SHOWERS.
SUN
NW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT. A
CHANCE OF SHOWERS.
SUN NIGHT...NW WINDS 15 TO 20 KT. GUSTS UP TO 30 KT
DIMINISHING
TO 20 KT AFTER MIDNIGHT. WAVES 1 TO 2 FT.
MON
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
ANZ537-260800-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
457 PM EDT FRI SEP 25 2026
..GALE WARNING IN EFFECT THROUGH SATURDAY AFTERNOON
REST OF THIS AFTERNOON
N WINDS 25 KT WITH GUSTS TO 35 KT. WAVES
4 FT.
TONIGHT
N WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES 5 FT.
SAT
N WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES 5 FT. A CHANCE
OF SHOWERS.
SAT NIGHT
NW WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES 4 FT.
SHOWERS LIKELY.
SUN
NW WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 3 FT. A
CHANCE OF SHOWERS.
SUN NIGHT...NW WINDS 15 TO 20 KT. GUSTS UP TO 30 KT
DIMINISHING
TO 20 KT AFTER MIDNIGHT. WAVES 3 FT.
MON...NW WINDS 5 TO 10 KT. WAVES 1 TO 2 FT
SUBSIDING TO FLAT
AFTER MIDNIGHT.
TUE
SW WINDS AROUND 5 KT. WAVES FLAT.
ANZ530-260800-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
457 PM EDT FRI SEP 25 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY AFTERNOON
REST OF THIS AFTERNOON
N WINDS 20 KT WITH GUSTS TO 25 KT. WAVES
2 FT.
TONIGHT...N WINDS 20 TO 25 KT. GUSTS UP TO 30 KT
INCREASING TO
35 KT LATE. WAVES 2 FT. A CHANCE OF SHOWERS.
SAT
N WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES 2 FT. SHOWERS.
SAT NIGHT
N WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 FT.
SHOWERS.
SUN
NW WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 FT.
SHOWERS.
SUN NIGHT
NW WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 FT. A
CHANCE OF SHOWERS.
MON...NW WINDS 10 TO 15 KT
DIMINISHING TO 5 KT. WAVES 1 FT OR
LESS.
TUE
W WINDS AROUND 5 KT. WAVES FLAT.
ANZ531-260800-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
457 PM EDT FRI SEP 25 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING
..GALE WARNING IN EFFECT THROUGH SATURDAY EVENING
REST OF THIS AFTERNOON
N WINDS 20 KT WITH GUSTS TO 30 KT. WAVES
3 FT.
TONIGHT
N WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES 4 FT. A
CHANCE OF SHOWERS.
SAT
N WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES 4 FT. SHOWERS
LIKELY.
SAT NIGHT
N WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES 3 FT.
SHOWERS.
SUN
NW WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
SHOWERS.
SUN NIGHT
NW WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT. A
CHANCE OF SHOWERS.
MON...NW WINDS 10 TO 15 KT
DIMINISHING TO 5 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT.
TUE
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
ANZ538-260800-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
457 PM EDT FRI SEP 25 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY AFTERNOON
REST OF THIS AFTERNOON
N WINDS 20 KT WITH GUSTS TO 25 KT. WAVES
2 FT.
TONIGHT
N WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 FT. A
CHANCE OF SHOWERS.
SAT
N WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 FT. SHOWERS
LIKELY.
SAT NIGHT
N WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 FT.
SHOWERS.
SUN
NW WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 FT.
SHOWERS.
SUN NIGHT...NW WINDS 15 TO 20 KT WITH GUSTS TO 30 KT
DIMINISHING
TO 10 KT WITH GUSTS TO 20 KT AFTER MIDNIGHT. WAVES 1 TO 2 FT. A
CHANCE OF SHOWERS.
MON
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
IN THE MORNING.
TUE
W WINDS AROUND 5 KT. WAVES FLAT.
ANZ539-260800-
CHESTER RIVER TO QUEENSTOWN MD-
457 PM EDT FRI SEP 25 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING
..GALE WARNING IN EFFECT THROUGH SATURDAY EVENING
REST OF THIS AFTERNOON
N WINDS 20 KT WITH GUSTS TO 30 KT. WAVES
3 FT.
TONIGHT
N WINDS 20 TO 25 KT. GUSTS UP TO 35 KT. WAVES 3 FT. A
CHANCE OF SHOWERS.
SAT
N WINDS 25 KT WITH GUSTS TO 35 KT. WAVES 4 FT. SHOWERS
LIKELY.
SAT NIGHT
N WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES 3 FT.
SHOWERS.
SUN
NW WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 4 FT.
SHOWERS.
SUN NIGHT
NW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT. A
CHANCE OF SHOWERS.
MON...NW WINDS 10 TO 15 KT
DIMINISHING TO AROUND 5 KT. WAVES 1 TO
2 FT...SUBSIDING TO FLAT AFTER MIDNIGHT.
TUE
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
ANZ532-260800-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
457 PM EDT FRI SEP 25 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING
..GALE WARNING IN EFFECT THROUGH SATURDAY EVENING
REST OF THIS AFTERNOON
N WINDS 20 KT WITH GUSTS TO 30 KT. WAVES
4 FT.
TONIGHT
N WINDS 20 TO 25 KT. GUSTS UP TO 35 KT. WAVES 4 FT. A
CHANCE OF SHOWERS.
SAT
N WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES 5 FT. SHOWERS
LIKELY.
SAT NIGHT...N WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES 5 FT
SUBSIDING TO 3 FT AFTER MIDNIGHT. SHOWERS LIKELY.
SUN
NW WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT. SHOWERS
LIKELY.
SUN NIGHT
NW WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT. A
CHANCE OF SHOWERS.
MON...NW WINDS 10 TO 15 KT
DIMINISHING TO 5 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT.
TUE
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
ANZ540-260800-
EASTERN BAY-
457 PM EDT FRI SEP 25 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING
..GALE WARNING IN EFFECT THROUGH SATURDAY EVENING
REST OF THIS AFTERNOON
N WINDS 20 KT WITH GUSTS TO 30 KT. WAVES
3 FT.
TONIGHT
N WINDS 25 TO 30 KT. WAVES 3 FT. A CHANCE OF SHOWERS.
SAT
N WINDS 25 TO 30 KT. WAVES 3 FT. SHOWERS LIKELY.
SAT NIGHT
N WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES 3 FT.
SHOWERS LIKELY.
SUN
NW WINDS 20 KT WITH GUSTS TO 30 KT. WAVES 3 FT. SHOWERS.
SUN NIGHT...NW WINDS 15 TO 20 KT. GUSTS UP TO 30 KT
DIMINISHING
TO 20 KT AFTER MIDNIGHT. WAVES 2 TO 3 FT. A CHANCE OF SHOWERS.
MON...NW WINDS 10 TO 15 KT...DIMINISHING TO 5 KT. WAVES 1 TO 2 FT
SUBSIDING TO FLAT AFTER MIDNIGHT.
TUE
W WINDS AROUND 5 KT. WAVES FLAT.
ANZ533-260800-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
457 PM EDT FRI SEP 25 2026
..GALE WARNING IN EFFECT THROUGH SATURDAY AFTERNOON
REST OF THIS AFTERNOON
N WINDS 25 KT WITH GUSTS TO 35 KT. WAVES
5 FT...EXCEPT AROUND 3 FT NEAR THE MOUTH OF THE CHOPTANK.
TONIGHT
N WINDS 25 TO 30 KT. WAVES 5 FT. A CHANCE OF SHOWERS.
SAT
N WINDS 25 TO 30 KT. WAVES 5 FT. SHOWERS LIKELY.
SAT NIGHT
N WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES 4 FT.
SHOWERS LIKELY.
SUN
NW WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 4 FT. SHOWERS
LIKELY.
SUN NIGHT
NW WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT. A
CHANCE OF SHOWERS.
MON...NW WINDS 10 TO 15 KT
DIMINISHING TO 5 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT.
TUE
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
ANZ541-260800-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
457 PM EDT FRI SEP 25 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING
..GALE WARNING IN EFFECT THROUGH SATURDAY EVENING
REST OF THIS AFTERNOON
N WINDS 25 KT WITH GUSTS TO 35 KT. WAVES
3 FT.
TONIGHT
N WINDS 25 TO 30 KT. WAVES 3 FT. A CHANCE OF SHOWERS.
SAT
N WINDS 25 TO 30 KT. WAVES 4 FT. SHOWERS LIKELY.
SAT NIGHT...N WINDS 25 TO 30 KT
DIMINISHING TO 20 KT AFTER
MIDNIGHT. WAVES 3 FT. SHOWERS LIKELY.
SUN
NW WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT. SHOWERS
LIKELY.
SUN NIGHT
NW WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT. A
CHANCE OF SHOWERS.
MON...NW WINDS 10 TO 15 KT
DIMINISHING TO 5 KT. WAVES 1 TO 2 FT.
TUE
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
ANZ542-260800-
PATUXENT RIVER TO BROOMES ISLAND MD-
457 PM EDT FRI SEP 25 2026
..GALE WARNING IN EFFECT THROUGH SATURDAY AFTERNOON
REST OF THIS AFTERNOON
N WINDS 20 KT WITH GUSTS TO 30 KT. WAVES
1 FT.
TONIGHT
N WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES 1 FT. A
CHANCE OF SHOWERS.
SAT
N WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES 1 FT. SHOWERS
LIKELY.
SAT NIGHT
N WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 1 FT.
SHOWERS LIKELY.
SUN
NW WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 1 FT. SHOWERS
LIKELY.
SUN NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT.
MON
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
ANZ534-260800-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
457 PM EDT FRI SEP 25 2026
..GALE WARNING IN EFFECT THROUGH SATURDAY AFTERNOON
REST OF THIS AFTERNOON
N WINDS 25 KT WITH GUSTS TO 35 KT. WAVES
5 FT.
TONIGHT
N WINDS 25 TO 30 KT. WAVES 6 FT. A CHANCE OF SHOWERS.
SAT
N WINDS 25 TO 30 KT. WAVES 6 FT. SHOWERS LIKELY.
SAT NIGHT
N WINDS 25 TO 30 KT. WAVES 5 FT. SHOWERS LIKELY.
SUN
NW WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES 5 FT. SHOWERS
LIKELY.
SUN NIGHT
NW WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 4 FT.
MON...NW WINDS 10 TO 15 KT
DIMINISHING TO 5 KT AFTER MIDNIGHT.
WAVES 2 TO 3 FT...SUBSIDING TO 1 FT AFTER MIDNIGHT.
TUE
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
ANZ543-260800-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
457 PM EDT FRI SEP 25 2026
..GALE WARNING IN EFFECT THROUGH SATURDAY AFTERNOON
REST OF THIS AFTERNOON
N WINDS 25 KT WITH GUSTS TO 35 KT. WAVES
3 FT.
TONIGHT
N WINDS 25 TO 30 KT. WAVES 4 FT. A CHANCE OF SHOWERS.
SAT
N WINDS 25 TO 30 KT. WAVES 4 FT. SHOWERS LIKELY.
SAT NIGHT
N WINDS 25 TO 30 KT. WAVES 3 FT. SHOWERS LIKELY.
SUN
NW WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES 3 FT. A
CHANCE OF SHOWERS.
SUN NIGHT
NW WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 2 TO
3 FT.
MON...NW WINDS 10 TO 15 KT
DIMINISHING TO 5 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT.
TUE
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
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