938
FZUS51 KLWX 170627
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
227 AM EDT FRI APR 17 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.
ANZ500-172000-
227 AM EDT FRI APR 17 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
IT WILL REMAIN VERY WARM AND DRY THROUGH SATURDAY AS AN AREA OF HIGH
PRESSURE REMAINS OFF THE SOUTHEASTERN U.S. COAST. A COLD FRONT LATE
SATURDAY NIGHT WILLL BRING THE NEXT CHANCE FOR WIDESPREAD SHOWERS.
SMALL CRAFT ADVISORIES MAY BE NEEDED AT TIMES FROM SATURDAY
AFTERNOON THROUGH TUESDAY MORNING.
ANZ535-172000-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
227 AM EDT FRI APR 17 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT EARLY THIS
MORNING...
OVERNIGHT
NW WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SCATTERED SHOWERS.
FRI
NW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
FRI NIGHT
NE WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
SAT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
SUN
NW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT. SHOWERS
LIKELY.
SUN NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
MON
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE...NW WINDS AROUND 5 KT
BECOMING S. WAVES 1 FT.
ANZ536-172000-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
227 AM EDT FRI APR 17 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT EARLY THIS
MORNING...
OVERNIGHT
NW WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SCATTERED SHOWERS.
FRI
NW 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 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN
NW WINDS 15 TO 20 KT. WAVES 1 TO 2 FT. SHOWERS.
SUN NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
MON...NW WINDS 10 TO 15 KT
BECOMING N AROUND 5 KT AFTER MIDNIGHT.
WAVES 1 FT.
TUE...NW WINDS AROUND 5 KT
BECOMING S. WAVES 1 FT.
ANZ537-172000-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
227 AM EDT FRI APR 17 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT EARLY THIS
MORNING...
OVERNIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. ISOLATED SHOWERS.
FRI
NW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
FRI NIGHT
SE WINDS AROUND 5 KT. WAVES FLAT.
SAT...SE WINDS AROUND 5 KT
INCREASING TO 10 TO 15 KT IN THE
AFTERNOON. WAVES FLAT...BUILDING TO 2 FT IN THE AFTERNOON.
SAT NIGHT
S WINDS 10 TO 15 KT. WAVES 2 FT. A CHANCE OF SHOWERS.
SUN
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
SHOWERS.
SUN NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A
CHANCE OF SHOWERS.
MON
NW WINDS 15 TO 20 KT. WAVES 1 TO 2 FT.
TUE...N WINDS 5 TO 10 KT
BECOMING S 10 TO 15 KT. WAVES 1 TO 2 FT.
ANZ530-172000-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
227 AM EDT FRI APR 17 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT EARLY THIS
MORNING...
OVERNIGHT
W WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. ISOLATED
SHOWERS.
FRI
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI NIGHT
N WINDS AROUND 5 KT. WAVES FLAT.
SAT
SE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
SAT NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SHOWERS.
SUN NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
MON...NW WINDS 10 TO 15 KT
BECOMING N AROUND 5 KT AFTER MIDNIGHT.
WAVES 1 FT.
TUE...NW WINDS AROUND 5 KT
BECOMING S. WAVES 1 FT OR LESS.
ANZ531-172000-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
227 AM EDT FRI APR 17 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT EARLY THIS
MORNING...
OVERNIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
SCATTERED SHOWERS.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI NIGHT
N WINDS AROUND 5 KT. WAVES FLAT.
SAT
SE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
SAT NIGHT
SE WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF
SHOWERS.
SUN
NW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SHOWERS.
SUN NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A
CHANCE OF SHOWERS.
MON
NW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
TUE...NE WINDS 5 KT
BECOMING S 10 TO 15 KT. WAVES 1 TO 2 FT.
ANZ538-172000-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
227 AM EDT FRI APR 17 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT EARLY THIS
MORNING...
OVERNIGHT
NW WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SCATTERED SHOWERS.
FRI
NW WINDS 5 KT. WAVES FLAT. A CHANCE OF SHOWERS.
FRI NIGHT
N WINDS AROUND 5 KT. WAVES FLAT.
SAT
SE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
SAT NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SHOWERS.
SUN NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
MON...NW WINDS 10 TO 15 KT
BECOMING N AROUND 5 KT AFTER MIDNIGHT.
WAVES 1 FT OR LESS.
TUE...NE WINDS AROUND 5 KT
BECOMING S. WAVES 1 FT OR LESS.
ANZ539-172000-
CHESTER RIVER TO QUEENSTOWN MD-
227 AM EDT FRI APR 17 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT EARLY THIS
MORNING...
OVERNIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
SCATTERED SHOWERS.
FRI
NW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
FRI NIGHT
N WINDS AROUND 5 KT. WAVES FLAT.
SAT
SE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
SAT NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
SHOWERS.
SUN NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A
CHANCE OF SHOWERS.
MON...NW WINDS 10 TO 15 KT
BECOMING N 5 TO 10 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT.
TUE...N WINDS 5 KT
BECOMING S 10 TO 15 KT. WAVES 1 TO 2 FT.
ANZ532-172000-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
227 AM EDT FRI APR 17 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT EARLY THIS
MORNING...
OVERNIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. SCATTERED SHOWERS.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS.
FRI NIGHT
NE WINDS AROUND 5 KT. WAVES FLAT.
SAT...E WINDS AROUND 5 KT
BECOMING SE 10 TO 15 KT WITH GUSTS TO
20 KT IN THE AFTERNOON. WAVES FLAT... BUILDING TO 2 FT IN THE
AFTERNOON.
SAT NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A
CHANCE OF SHOWERS.
SUN
NW WINDS 15 TO 20 KT. WAVES 2 FT. SHOWERS.
SUN NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A
CHANCE OF SHOWERS.
MON...NW WINDS 15 TO 20 KT
BECOMING N 5 TO 10 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT.
TUE...NE WINDS 5 TO 10 KT
BECOMING S 15 TO 20 KT. WAVES 1 TO
2 FT.
ANZ540-172000-
EASTERN BAY-
227 AM EDT FRI APR 17 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT EARLY THIS
MORNING...
OVERNIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SCATTERED SHOWERS.
FRI
NW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
FRI NIGHT
NE WINDS AROUND 5 KT. WAVES FLAT.
SAT
SE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
SAT NIGHT
S WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
SHOWERS.
SUN NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. A CHANCE OF SHOWERS.
MON...NW WINDS 10 TO 15 KT
BECOMING N 5 TO 10 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT.
TUE...N WINDS 5 KT
BECOMING S 10 TO 15 KT. WAVES 1 TO 2 FT.
ANZ533-172000-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
227 AM EDT FRI APR 17 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT EARLY THIS
MORNING...
OVERNIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
SCATTERED SHOWERS.
FRI
NW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
FRI NIGHT
NE WINDS AROUND 5 KT. WAVES FLAT.
SAT...E WINDS AROUND 5 KT
BECOMING SE 10 TO 15 KT WITH GUSTS TO
20 KT IN THE AFTERNOON. WAVES FLAT... BUILDING TO 2 FT IN THE
AFTERNOON.
SAT NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A
CHANCE OF SHOWERS.
SUN
NW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO 3 FT.
SHOWERS.
SUN NIGHT
NW WINDS 15 TO 20 KT. WAVES 2 TO 3 FT. A CHANCE OF
SHOWERS.
MON...NW WINDS 15 TO 20 KT
BECOMING N 5 TO 10 KT AFTER MIDNIGHT.
WAVES 2 TO 3 FT...SUBSIDING TO 1 FT AFTER MIDNIGHT.
TUE...N WINDS 5 TO 10 KT
BECOMING S IN THE AFTERNOON, THEN
INCREASING TO 15 TO 20 KT. WAVES 1 TO 2 FT.
ANZ541-172000-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
227 AM EDT FRI APR 17 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT EARLY THIS
MORNING...
OVERNIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. SCATTERED SHOWERS.
FRI
NW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
FRI NIGHT
NE WINDS AROUND 5 KT. WAVES FLAT.
SAT...E WINDS AROUND 5 KT
BECOMING SE 10 TO 15 KT IN THE
AFTERNOON. WAVES 1 FT OR LESS.
SAT NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A
CHANCE OF SHOWERS.
SUN
NW WINDS 15 TO 20 KT. WAVES 2 FT. SHOWERS.
SUN NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A
CHANCE OF SHOWERS.
MON...NW WINDS 15 TO 20 KT
BECOMING N 5 TO 10 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT.
TUE...N WINDS 5 TO 10 KT
BECOMING S IN THE AFTERNOON, THEN
INCREASING TO 15 TO 20 KT. WAVES 1 TO 2 FT.
ANZ542-172000-
PATUXENT RIVER TO BROOMES ISLAND MD-
227 AM EDT FRI APR 17 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT EARLY THIS
MORNING...
OVERNIGHT
NW WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SCATTERED SHOWERS.
FRI
NW 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 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SHOWERS.
SUN NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A
CHANCE OF SHOWERS.
MON
NW WINDS 10 TO 15 KT. WAVES 1 FT.
TUE...NW WINDS 5 KT
BECOMING S. WAVES 1 FT.
ANZ534-172000-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
227 AM EDT FRI APR 17 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT EARLY THIS
MORNING...
OVERNIGHT
W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
ISOLATED SHOWERS.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
FRI NIGHT
S WINDS AROUND 5 KT. WAVES FLAT.
SAT...E WINDS 5 KT
BECOMING SE 10 TO 15 KT IN THE AFTERNOON.
WAVES 1 TO 2 FT.
SAT NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A
CHANCE OF SHOWERS.
SUN...W WINDS 15 TO 20 KT
BECOMING NW IN THE AFTERNOON. GUSTS UP
TO 25 KT. WAVES 3 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 15 TO 20 KT. WAVES 2 TO 3 FT.
TUE...N WINDS 10 TO 15 KT
BECOMING S 5 TO 10 KT IN THE AFTERNOON,
THEN INCREASING TO 15 TO 20 KT. WAVES 1 TO 2 FT...BUILDING TO 3 FT.
ANZ543-172000-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
227 AM EDT FRI APR 17 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT EARLY THIS
MORNING...
OVERNIGHT
W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT.
FRI
W WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI NIGHT
SW WINDS AROUND 5 KT. WAVES FLAT.
SAT
SE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
SAT NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A
CHANCE OF SHOWERS.
SUN...W WINDS 15 TO 20 KT
BECOMING NW IN THE AFTERNOON. GUSTS UP
TO 25 KT. WAVES 2 FT. SHOWERS.
SUN NIGHT
NW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT. A
CHANCE OF SHOWERS.
MON
NW WINDS 15 TO 20 KT. WAVES 1 TO 2 FT.
TUE...N WINDS 5 TO 10 KT
BECOMING SW IN THE AFTERNOON, THEN
BECOMING S 15 TO 20 KT. WAVES 1 TO 2 FT.
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