167
FZUS51 KLWX 172230
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
630 PM 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.
ANZ500-180800-
630 PM 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 WILL BRING THE NEXT CHANCE FOR WIDESPREAD SHOWERS.
SMALL CRAFT ADVISORIES MAY BE NEEDED AT TIMES THROUGH TUESDAY
MORNING.
ANZ535-180800-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
630 PM EDT FRI APR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
TONIGHT...N WINDS 5 TO 10 KT WITH GUSTS TO 20 KT THIS EVENING
BECOMING LIGHT. WAVES 1 FT OR LESS.
SAT
SE WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
WAVES 1 FT.
SAT NIGHT...SE WINDS 5 TO 10 KT WITH GUSTS TO 20 KT
BECOMING N
LATE. WAVES 1 FT. SHOWERS LIKELY.
SUN
NW WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 1 TO 2 FT.
SHOWERS.
SUN NIGHT
NW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE EVENING.
WAVES 1 FT.
MON
NW WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
MON NIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
SW WINDS AROUND 5 KT. WAVES 1 FT.
WED
W WINDS AROUND 5 KT. WAVES 1 FT.
ANZ536-180800-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
630 PM EDT FRI APR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
TONIGHT...NE WINDS 5 TO 10 KT WITH GUSTS TO 20 KT
DIMINISHING TO
AROUND 5 KT AFTER MIDNIGHT. WAVES 1 FT OR LESS.
SAT
E WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SAT NIGHT...SE WINDS 10 TO 15 KT
BECOMING W 5 TO 10 KT LATE.
GUSTS UP TO 20 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
SUN...NW WINDS 20 TO 25 KT
DIMINISHING TO 10 TO 15 KT IN THE
AFTERNOON. GUSTS UP TO 30 KT. WAVES 2 TO 3 FT. SHOWERS.
SUN NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
MON
NW WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
MON NIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT.
TUE...W WINDS AROUND 5 KT
BECOMING S. WAVES 1 FT.
WED...W WINDS 5 TO 10 KT
BECOMING NW. WAVES 1 FT.
ANZ537-180800-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
630 PM EDT FRI APR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
TONIGHT...N WINDS 10 KT WITH GUSTS TO 20 KT
BECOMING E LATE THIS
EVENING AND OVERNIGHT. WAVES 1 FT OR LESS.
SAT
E WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
SAT NIGHT...SE WINDS 10 TO 15 KT
BECOMING SW LATE. GUSTS UP TO
20 KT. WAVES 2 FT. A CHANCE OF SHOWERS.
SUN
NW WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
SHOWERS.
SUN NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
MON
NW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
MON NIGHT
N WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
TUE...N WINDS 5 TO 10 KT
BECOMING SE 10 TO 15 KT IN THE AFTERNOON
AND EVENING, THEN BECOMING SW AFTER MIDNIGHT. WAVES 1 TO 2 FT.
WED...W WINDS 10 TO 15 KT
BECOMING N 5 KT. WAVES 1 TO 2 FT.
ANZ530-180800-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
630 PM EDT FRI APR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
TONIGHT...N WINDS 5 TO 10 KT WITH GUSTS TO 20 KT
BECOMING NE
AFTER MIDNIGHT. WAVES 1 FT OR LESS.
SAT
SE WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
WAVES 1 FT.
SAT NIGHT
E WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE EVENING.
WAVES 1 FT. A CHANCE OF SHOWERS.
SUN
NW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SHOWERS.
SUN NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
MON
NW WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
MON NIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TUE...W WINDS AROUND 5 KT
BECOMING S. WAVES 1 FT OR LESS.
WED...W WINDS 5 TO 10 KT
BECOMING N AFTER MIDNIGHT. WAVES 1 FT OR
LESS.
ANZ531-180800-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
630 PM EDT FRI APR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
TONIGHT...N WINDS 5 TO 10 KT WITH GUSTS TO 20 KT
BECOMING NE
LATE. WAVES 1 FT OR LESS.
SAT
E WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON. WAVES
1 FT.
SAT NIGHT...SE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
BECOMING NE
5 TO 10 KT LATE. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
SUN
NW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
SHOWERS.
SUN NIGHT...NW WINDS 10 TO 15 KT
BECOMING W 5 TO 10 KT AFTER
MIDNIGHT. WAVES 1 TO 2 FT.
MON
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
MON NIGHT
N 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.
WED...W WINDS 5 TO 10 KT
BECOMING N. WAVES 1 FT.
ANZ538-180800-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
630 PM EDT FRI APR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
TONIGHT...N WINDS 5 TO 10 KT WITH GUSTS TO 20 KT
BECOMING E
LATE. WAVES 1 FT OR LESS.
SAT
E WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON. WAVES
1 FT.
SAT NIGHT...SE WINDS 5 TO 10 KT WITH GUSTS TO 20 KT
BECOMING N
LATE. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN
NW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SHOWERS.
SUN NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
MON
NW WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
MON NIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TUE...NE WINDS AROUND 5 KT
BECOMING S. WAVES 1 FT OR LESS.
WED
NW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
ANZ539-180800-
CHESTER RIVER TO QUEENSTOWN MD-
630 PM EDT FRI APR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
TONIGHT
NE WINDS 5 KT. GUSTS UP TO 20 KT EARLY THIS EVENING.
WAVES 1 FT OR LESS.
SAT
E WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT...SE WINDS 5 TO 10 KT
BECOMING NE LATE. WAVES 1 FT. A
CHANCE OF SHOWERS.
SUN
NW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
SHOWERS.
SUN NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
MON
NW WINDS 5 TO 10 KT. WAVES 2 FT.
MON NIGHT
N WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
TUE...N WINDS 5 KT
BECOMING S. WAVES 1 FT.
WED...SW WINDS 5 TO 10 KT
BECOMING N. WAVES 1 FT.
ANZ532-180800-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
630 PM EDT FRI APR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
TONIGHT...N WINDS 5 TO 10 KT WITH GUSTS TO 20 KT
BECOMING NE
LATE. WAVES 1 FT OR LESS.
SAT
SE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
SAT NIGHT...SE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
BECOMING NE
5 TO 10 KT LATE. WAVES 2 TO 3 FT. A CHANCE OF SHOWERS.
SUN
NW WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
SHOWERS.
SUN NIGHT...NW WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. WAVES
1 TO 2 FT.
MON
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
MON NIGHT
N WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
TUE...NE WINDS 5 TO 10 KT
BECOMING S 10 TO 15 KT. WAVES 1 TO
2 FT.
WED...SW WINDS 10 TO 15 KT
BECOMING N 5 TO 10 KT. WAVES 1 TO
2 FT.
ANZ540-180800-
EASTERN BAY-
630 PM EDT FRI APR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
TONIGHT...N WINDS 5 TO 10 KT WITH GUSTS TO 20 KT
BECOMING E
LATE. WAVES 1 FT OR LESS.
SAT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT...SE WINDS 5 TO 10 KT WITH GUSTS TO 20 KT
BECOMING NE
LATE. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN
NW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SHOWERS.
SUN NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
MON
NW WINDS 5 TO 10 KT. WAVES 1 FT.
MON NIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT.
TUE...N WINDS 5 KT
BECOMING S 10 TO 15 KT. WAVES 1 TO 2 FT.
WED...SW WINDS 5 TO 10 KT
BECOMING N. WAVES 1 FT.
ANZ533-180800-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
630 PM EDT FRI APR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
TONIGHT
N WINDS 5 TO 10 KT. GUSTS UP TO 20 KT EARLY THIS EVENING.
WAVES 1 TO 2 FT...SUBSIDING TO FLAT AFTER MIDNIGHT.
SAT
SE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
SAT NIGHT...SE WINDS 10 TO 15 KT
BECOMING W LATE. GUSTS UP TO
20 KT. WAVES 2 TO 3 FT. A CHANCE OF SHOWERS.
SUN
NW WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
SHOWERS.
SUN NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
MON
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
MON NIGHT
N WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
TUE...NE WINDS 5 TO 10 KT
BECOMING SE 10 TO 15 KT IN THE
AFTERNOON AND EVENING, THEN BECOMING S AFTER MIDNIGHT. WAVES 1 TO
2 FT.
WED...SW WINDS 10 TO 15 KT
BECOMING N 5 TO 10 KT. WAVES 1 TO
2 FT.
ANZ541-180800-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
630 PM EDT FRI APR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
TONIGHT...N WINDS 5 TO 10 KT WITH GUSTS TO 20 KT
BECOMING NE
LATE. WAVES 1 FT OR LESS.
SAT
SE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SAT NIGHT...SE WINDS 10 TO 15 KT
BECOMING SW 5 TO 10 KT LATE.
GUSTS UP TO 20 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
SUN
NW WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
SHOWERS.
SUN NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
MON
NW WINDS 10 TO 15 KT. WAVES 2 FT.
MON NIGHT
N WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
TUE...N WINDS 5 TO 10 KT
BECOMING S 10 TO 15 KT. WAVES 1 TO 2 FT.
WED...SW WINDS 10 TO 15 KT
BECOMING N 5 KT. WAVES 1 TO 2 FT.
ANZ542-180800-
PATUXENT RIVER TO BROOMES ISLAND MD-
630 PM EDT FRI APR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
TONIGHT...N WINDS 10 KT WITH GUSTS TO 20 KT
BECOMING NE LATE THIS
EVENING AND OVERNIGHT. WAVES 1 FT OR LESS.
SAT
SE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SAT NIGHT...SE WINDS 10 TO 15 KT
BECOMING SW 5 TO 10 KT LATE.
GUSTS UP TO 20 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN
NW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 1 FT.
SHOWERS.
SUN NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
MON
NW WINDS 5 TO 10 KT. WAVES 1 FT.
MON NIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT.
TUE...E WINDS 5 KT
BECOMING S. WAVES 1 FT.
WED...W WINDS 5 TO 10 KT
BECOMING N. WAVES 1 FT.
ANZ534-180800-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
630 PM EDT FRI APR 17 2026
TONIGHT
N WINDS 5 KT. WAVES LESS THAN 1 FT.
SAT...E WINDS 10 TO 15 KT
BECOMING SE WITH GUSTS TO 20 KT LATE.
WAVES 1 TO 2 FT.
SAT NIGHT...SE WINDS 10 TO 15 KT
BECOMING S LATE. GUSTS UP TO
20 KT. WAVES 3 FT. A CHANCE OF SHOWERS.
SUN
NW WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 4 FT.
SHOWERS.
SUN NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 TO
3 FT.
MON
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
MON NIGHT
N WINDS 10 TO 15 KT. WAVES 2 FT.
TUE...N WINDS 10 TO 15 KT
BECOMING SE 5 TO 10 KT IN THE
AFTERNOON, THEN BECOMING S 15 TO 20 KT. WAVES 1 TO 2 FT...BUILDING
TO 3 FT AFTER MIDNIGHT.
WED...SW WINDS 15 TO 20 KT
DIMINISHING TO 5 TO 10 KT IN THE
AFTERNOON, THEN BECOMING N. WAVES 2 TO 3 FT... SUBSIDING TO 1 FT.
ANZ543-180800-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
630 PM EDT FRI APR 17 2026
TONIGHT
N WINDS 5 KT. WAVES LESS THAN 1 FT.
SAT
E WINDS 10 TO 15 KT. WAVES 1 FT.
SAT NIGHT...SE WINDS 10 TO 15 KT
BECOMING S LATE. GUSTS UP TO
20 KT. WAVES 2 FT.
SUN
NW WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 2 TO 3 FT.
SHOWERS LIKELY.
SUN NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT.
MON
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
MON NIGHT
N WINDS 10 TO 15 KT. WAVES 1 FT.
TUE...N WINDS 5 TO 10 KT
BECOMING S 15 TO 20 KT. WAVES 1 TO 2 FT.
WED...SW WINDS 15 TO 20 KT
DIMINISHING TO 5 TO 10 KT IN THE
AFTERNOON AND EVENING, THEN BECOMING N AFTER MIDNIGHT. WAVES 1 TO
2 FT.
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