745
FZUS51 KLWX 100857
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
457 AM EDT THU SEP 10 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.
ANZ500-102300-
457 AM EDT THU SEP 10 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
A COLD FRONT WILL CROSS THE WATERS TODAY INTO TONIGHT. THIS WILL
ALLOW FOR WINDS TO SHIFT TO A WEST TO NORTHWEST DIRECTION. WINDS
WILL DIMINISH FRIDAY. SOUTHERLY CHANNELING MAY PROMPT SMALL CRAFT
ADVISORIES SATURDAY.
ANZ535-102300-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
457 AM EDT THU SEP 10 2026
REST OF THE OVERNIGHT
SW WINDS 10 KT WITH GUSTS TO 20 KT. WAVES
1 FT.
TODAY
W WINDS 5 TO 10 KT. WAVES 1 FT.
TONIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT. SHOWERS WITH A CHANCE
OF TSTMS.
FRI
N WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
FRI NIGHT
E WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
SAT
SE WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT NIGHT
S WINDS AROUND 5 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
SUN
W WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS IN THE
MORNING.
MON
NE WINDS AROUND 5 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ536-102300-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
457 AM EDT THU SEP 10 2026
REST OF THE OVERNIGHT
SW WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
1 FT.
TODAY...SW WINDS 10 TO 15 KT
BECOMING W 5 KT IN THE AFTERNOON.
WAVES 1 FT. A CHANCE OF SHOWERS.
TONIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT. SHOWERS WITH A CHANCE
OF TSTMS.
FRI
NE WINDS AROUND 5 KT. WAVES 1 FT. SHOWERS LIKELY.
FRI NIGHT
E WINDS AROUND 5 KT. WAVES 1 FT.
SAT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
SUN
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS.
MON
NE WINDS AROUND 5 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ537-102300-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
457 AM EDT THU SEP 10 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM EDT THIS MORNING
REST OF THE OVERNIGHT
SW WINDS 20 KT WITH GUSTS TO 25 KT. WAVES
2 FT.
TODAY...SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
BECOMING NW
5 TO 10 KT IN THE AFTERNOON. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
TONIGHT
NW WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS LIKELY WITH
A CHANCE OF TSTMS.
FRI
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI NIGHT
E WINDS 5 KT. WAVES LESS THAN 1 FT.
SAT
SE WINDS 5 TO 10 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
SAT NIGHT
S WINDS 5 TO 10 KT. WAVES 1 TO 2 FT. SHOWERS LIKELY
WITH A CHANCE OF TSTMS.
SUN
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS. SHOWERS LIKELY IN
THE MORNING, THEN A CHANCE OF SHOWERS THROUGH THE NIGHT.
MON...N WINDS 5 TO 10 KT
BECOMING E. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ530-102300-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
457 AM EDT THU SEP 10 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EDT THIS MORNING
REST OF THE OVERNIGHT
SW WINDS 20 KT WITH GUSTS TO 25 KT. WAVES
2 FT.
TODAY...W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
DIMINISHING TO
5 KT IN THE AFTERNOON. WAVES 1 TO 2 FT.
TONIGHT...NW WINDS AROUND 5 KT
BECOMING N LATE. WAVES 1 FT.
SHOWERS LIKELY.
FRI
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI NIGHT
NE WINDS AROUND 5 KT. WAVES 1 FT.
SAT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE
OF TSTMS.
SUN
W WINDS AROUND 5 KT. WAVES 1 FT. SHOWERS IN THE MORNING. A
CHANCE OF SHOWERS IN THE AFTERNOON.
MON...N WINDS 5 TO 10 KT
BECOMING E AFTER MIDNIGHT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ531-102300-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
457 AM EDT THU SEP 10 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EDT THIS MORNING
REST OF THE OVERNIGHT
SW WINDS 20 KT WITH GUSTS TO 25 KT. WAVES
3 FT.
TODAY...W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
DIMINISHING TO
5 KT IN THE AFTERNOON. WAVES 1 TO 2 FT.
TONIGHT...W WINDS 5 KT
BECOMING N LATE. WAVES 1 FT. SHOWERS
LIKELY WITH A CHANCE OF TSTMS.
FRI
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI NIGHT
E WINDS 5 KT. WAVES FLAT.
SAT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE
OF TSTMS.
SUN
W WINDS AROUND 5 KT. WAVES 1 FT. SHOWERS IN THE MORNING. A
CHANCE OF SHOWERS IN THE AFTERNOON.
MON...NE WINDS 5 TO 10 KT
BECOMING SE AFTER MIDNIGHT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ538-102300-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
457 AM EDT THU SEP 10 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EDT THIS MORNING
REST OF THE OVERNIGHT
SW WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
1 FT.
TODAY
W WINDS 5 TO 10 KT. WAVES 1 FT.
TONIGHT
NW WINDS 5 KT. WAVES FLAT. SHOWERS LIKELY WITH A CHANCE
OF TSTMS.
FRI
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI NIGHT
E WINDS AROUND 5 KT. WAVES FLAT.
SAT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE
OF TSTMS.
SUN
W WINDS AROUND 5 KT. WAVES FLAT. SHOWERS IN THE MORNING.
MON
NE WINDS 5 KT. WAVES LESS THAN 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ539-102300-
CHESTER RIVER TO QUEENSTOWN MD-
457 AM EDT THU SEP 10 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EDT THIS MORNING
REST OF THE OVERNIGHT
SW WINDS 20 KT WITH GUSTS TO 25 KT. WAVES
3 FT.
TODAY...W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
DIMINISHING TO
5 KT IN THE AFTERNOON. WAVES 1 TO 2 FT.
TONIGHT
NW WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS LIKELY WITH
A CHANCE OF TSTMS.
FRI
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI NIGHT
E WINDS AROUND 5 KT. WAVES FLAT.
SAT
SE WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
SAT NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE
OF TSTMS.
SUN
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS. SHOWERS IN THE
MORNING. A CHANCE OF SHOWERS IN THE AFTERNOON.
MON...N WINDS 5 TO 10 KT
BECOMING SE AFTER MIDNIGHT. WAVES 1 FT
OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ532-102300-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
457 AM EDT THU SEP 10 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EDT THIS MORNING
REST OF THE OVERNIGHT
SW WINDS 20 KT WITH GUSTS TO 25 KT. WAVES
3 FT.
TODAY...SW WINDS 15 TO 20 KT
DIMINISHING TO 5 TO 10 KT IN THE
LATE MORNING AND AFTERNOON. WAVES 3 FT...SUBSIDING TO 1 FT IN THE
AFTERNOON.
TONIGHT...W WINDS 5 KT
BECOMING N LATE. WAVES 1 FT. SHOWERS WITH
A CHANCE OF TSTMS.
FRI
N WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
FRI NIGHT
E WINDS AROUND 5 KT. WAVES 1 FT.
SAT
SE WINDS 5 TO 10 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
SAT NIGHT
S WINDS 5 TO 10 KT. WAVES 2 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
SUN
W WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS
THROUGH THE DAY.
MON...NE WINDS 5 TO 10 KT
BECOMING SE AFTER MIDNIGHT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ540-102300-
EASTERN BAY-
457 AM EDT THU SEP 10 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EDT THIS MORNING
REST OF THE OVERNIGHT
SW WINDS 20 KT WITH GUSTS TO 25 KT. WAVES
3 FT.
TODAY...SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
DIMINISHING TO
5 KT IN THE AFTERNOON. WAVES 1 TO 2 FT.
TONIGHT
NW WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS WITH A
CHANCE OF TSTMS.
FRI
N WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
FRI NIGHT
E WINDS AROUND 5 KT. WAVES FLAT.
SAT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE
OF TSTMS.
SUN
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS. SHOWERS IN THE
MORNING. A CHANCE OF SHOWERS IN THE AFTERNOON.
MON...N WINDS 5 TO 10 KT
BECOMING SE AFTER MIDNIGHT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ533-102300-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
457 AM EDT THU SEP 10 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EDT THIS MORNING
REST OF THE OVERNIGHT
SW WINDS 20 KT WITH GUSTS TO 25 KT. WAVES
3 FT.
TODAY...SW WINDS 15 TO 20 KT
BECOMING W 5 TO 10 KT IN THE LATE
MORNING AND AFTERNOON. WAVES 1 TO 2 FT.
TONIGHT...W WINDS 5 KT
BECOMING N LATE. WAVES 1 FT OR LESS.
SHOWERS WITH A CHANCE OF TSTMS.
FRI
N WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS.
FRI NIGHT
E WINDS 5 KT. WAVES LESS THAN 1 FT.
SAT
SE WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
SAT NIGHT
S WINDS 10 TO 15 KT. WAVES 2 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
SUN
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS. SHOWERS LIKELY IN
THE MORNING. A CHANCE OF SHOWERS IN THE AFTERNOON.
MON...NE WINDS 5 TO 10 KT
BECOMING SE AFTER MIDNIGHT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ541-102300-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
457 AM EDT THU SEP 10 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EDT THIS MORNING
REST OF THE OVERNIGHT
SW WINDS 20 KT WITH GUSTS TO 25 KT. WAVES
3 FT.
TODAY...SW WINDS 15 TO 20 KT
BECOMING W 5 TO 10 KT IN THE LATE
MORNING AND AFTERNOON. WAVES 1 TO 2 FT.
TONIGHT...W WINDS 5 KT
BECOMING N LATE. WAVES 1 FT OR LESS.
SHOWERS WITH A CHANCE OF TSTMS.
FRI
N WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS.
FRI NIGHT
E WINDS AROUND 5 KT. WAVES FLAT.
SAT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE
OF TSTMS.
SUN
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS. SHOWERS IN THE
MORNING. A CHANCE OF SHOWERS IN THE AFTERNOON.
MON...N WINDS 5 TO 10 KT
BECOMING SE AFTER MIDNIGHT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ542-102300-
PATUXENT RIVER TO BROOMES ISLAND MD-
457 AM EDT THU SEP 10 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EDT THIS MORNING
REST OF THE OVERNIGHT
SW WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
1 FT.
TODAY
W WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE MORNING. WAVES
1 FT.
TONIGHT
W WINDS AROUND 5 KT. WAVES 1 FT. SHOWERS WITH A CHANCE OF
TSTMS.
FRI
N WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS.
FRI NIGHT
E WINDS AROUND 5 KT. WAVES 1 FT.
SAT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
SUN
SW WINDS AROUND 5 KT. WAVES 1 FT. SHOWERS LIKELY IN THE
MORNING, THEN A CHANCE OF SHOWERS THROUGH THE NIGHT.
MON...N WINDS 5 TO 10 KT
BECOMING E. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ534-102300-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
457 AM EDT THU SEP 10 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM EDT THIS MORNING
REST OF THE OVERNIGHT
SW WINDS 20 KT WITH GUSTS TO 25 KT. WAVES
4 FT.
TODAY...SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT
BECOMING W 5 TO
10 KT IN THE AFTERNOON. WAVES 2 TO 3 FT.
TONIGHT...SW WINDS 5 TO 10 KT
BECOMING NW LATE. WAVES 1 FT.
SHOWERS LIKELY WITH A CHANCE OF TSTMS.
FRI
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
SE WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
SAT NIGHT...SE WINDS 10 TO 15 KT
BECOMING S 5 TO 10 KT AFTER
MIDNIGHT. WAVES 2 FT. SHOWERS LIKELY WITH A CHANCE OF TSTMS.
SUN
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
MON...N WINDS 5 TO 10 KT
BECOMING E. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ543-102300-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
457 AM EDT THU SEP 10 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM EDT THIS MORNING
REST OF THE OVERNIGHT
SW WINDS 25 KT WITH GUSTS TO 30 KT. WAVES
3 FT.
TODAY...SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT
DIMINISHING TO
5 TO 10 KT IN THE AFTERNOON. WAVES 1 TO 2 FT.
TONIGHT...SW WINDS 5 TO 10 KT
BECOMING NW LATE. WAVES 1 FT.
SHOWERS LIKELY WITH A CHANCE OF TSTMS.
FRI
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE
OF TSTMS.
SUN
W WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. SHOWERS IN THE
MORNING. A CHANCE OF SHOWERS IN THE AFTERNOON.
MON...N WINDS 5 TO 10 KT
BECOMING E AFTER MIDNIGHT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page