628
FZUS51 KLWX 172047
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
447 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-
447 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-
447 PM EDT FRI APR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
REST OF THIS AFTERNOON
NW WINDS 10 KT WITH GUSTS TO 20 KT. WAVES
1 FT.
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
SE WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. 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. WAVES 1 FT.
TUE
SW WINDS AROUND 5 KT. WAVES 1 FT.
ANZ536-180800-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
447 PM EDT FRI APR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
REST OF THIS AFTERNOON
NW WINDS 10 KT WITH GUSTS TO 20 KT. WAVES
1 FT.
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 S 5 TO 10 KT AFTER
MIDNIGHT. 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. WAVES 1 FT.
TUE...W WINDS AROUND 5 KT
BECOMING S. WAVES 1 FT.
ANZ537-180800-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
447 PM EDT FRI APR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
REST OF THIS AFTERNOON
NW WINDS 10 KT WITH GUSTS TO 20 KT. WAVES
1 FT.
TONIGHT
NE WINDS 5 TO 10 KT. GUSTS UP TO 20 KT EARLY IN THE
EVENING. 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 S AFTER MIDNIGHT. 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
BECOMING N 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 FT.
ANZ530-180800-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
447 PM EDT FRI APR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
REST OF THIS AFTERNOON
NW WINDS 10 KT WITH GUSTS TO 20 KT. WAVES
1 FT.
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. 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. WAVES 1 FT OR LESS.
TUE...W WINDS AROUND 5 KT
BECOMING S. WAVES 1 FT OR LESS.
ANZ531-180800-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
447 PM EDT FRI APR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
REST OF THIS AFTERNOON
NW WINDS 10 KT WITH GUSTS TO 20 KT. WAVES
2 FT. A SLIGHT CHANCE OF SHOWERS.
TONIGHT
NE WINDS 5 TO 10 KT. GUSTS UP TO 20 KT EARLY IN THE
EVENING. WAVES 2 FT...SUBSIDING TO FLAT AFTER MIDNIGHT.
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 E
5 TO 10 KT AFTER MIDNIGHT. 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
BECOMING N 5 TO 10 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT.
TUE...NE WINDS 5 KT
BECOMING S 10 TO 15 KT. WAVES 1 FT.
ANZ538-180800-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
447 PM EDT FRI APR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
REST OF THIS AFTERNOON
NW WINDS 10 KT WITH GUSTS TO 20 KT. WAVES
1 FT. A SLIGHT CHANCE OF SHOWERS.
TONIGHT
NE WINDS 5 TO 10 KT. GUSTS UP TO 20 KT EARLY IN THE
EVENING. 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
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
NW WINDS 5 TO 10 KT. WAVES 1 FT.
MON
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TUE...NE WINDS AROUND 5 KT
BECOMING S. WAVES 1 FT OR LESS.
ANZ539-180800-
CHESTER RIVER TO QUEENSTOWN MD-
447 PM EDT FRI APR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
REST OF THIS AFTERNOON
NW WINDS 5 KT WITH GUSTS TO 20 KT. WAVES
2 FT.
TONIGHT...N WINDS 5 TO 10 KT WITH GUSTS TO 20 KT
BECOMING E
LATE. WAVES 2 FT...SUBSIDING TO FLAT AFTER MIDNIGHT.
SAT
E WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT
E WINDS 5 TO 10 KT. 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 1 TO 2 FT.
TUE...N WINDS 5 KT
BECOMING S. WAVES 1 FT.
ANZ532-180800-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
447 PM EDT FRI APR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
REST OF THIS AFTERNOON
N WINDS 10 KT WITH GUSTS TO 20 KT. WAVES
2 FT.
TONIGHT
NE WINDS 5 TO 10 KT. GUSTS UP TO 20 KT EARLY IN THE
EVENING. WAVES 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 E 5 TO 10 KT AFTER
MIDNIGHT. GUSTS UP TO 20 KT. 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
BECOMING N 5 TO 10 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT.
TUE...NE WINDS 5 TO 10 KT
BECOMING S 10 TO 15 KT. WAVES 1 TO
2 FT.
ANZ540-180800-
EASTERN BAY-
447 PM EDT FRI APR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
REST OF THIS AFTERNOON
NW WINDS 10 KT WITH GUSTS TO 20 KT. WAVES
1 FT.
TONIGHT
NE WINDS 5 TO 10 KT. GUSTS UP TO 20 KT EARLY IN THE
EVENING. 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. 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.
TUE...N WINDS 5 KT
BECOMING S 10 TO 15 KT. WAVES 1 FT.
ANZ533-180800-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
447 PM EDT FRI APR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
REST OF THIS AFTERNOON
N WINDS 10 KT WITH GUSTS TO 20 KT. WAVES
2 FT.
TONIGHT
N WINDS 5 TO 10 KT. GUSTS UP TO 20 KT EARLY IN THE
EVENING. WAVES 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
S WINDS 10 TO 15 KT WITH GUSTS 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
BECOMING N 5 TO 10 KT AFTER MIDNIGHT.
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.
ANZ541-180800-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
447 PM EDT FRI APR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
REST OF THIS AFTERNOON
NW WINDS 10 KT WITH GUSTS TO 20 KT. WAVES
1 FT.
TONIGHT
N WINDS 5 TO 10 KT. GUSTS UP TO 20 KT EARLY IN THE
EVENING. 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 S 5 TO 10 KT AFTER
MIDNIGHT. 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
BECOMING N 5 TO 10 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT.
TUE...N WINDS 5 TO 10 KT
BECOMING S 10 TO 15 KT. WAVES 1 FT.
ANZ542-180800-
PATUXENT RIVER TO BROOMES ISLAND MD-
447 PM EDT FRI APR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
REST OF THIS AFTERNOON
N WINDS 10 KT WITH GUSTS TO 20 KT. WAVES
1 FT.
TONIGHT
N WINDS 5 TO 10 KT WITH GUSTS TO 20 KT EARLY IN THE
EVENING...BECOMING LIGHT. WAVES 1 FT.
SAT
SE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SAT NIGHT...SE WINDS 10 TO 15 KT
BECOMING S 5 TO 10 KT AFTER
MIDNIGHT. 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.
TUE...E WINDS 5 KT
BECOMING S. WAVES 1 FT.
ANZ534-180800-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
447 PM EDT FRI APR 17 2026
REST OF THIS AFTERNOON
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
N WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
SAT...E WINDS 10 TO 15 KT
BECOMING SE WITH GUSTS TO 20 KT LATE.
WAVES 1 TO 2 FT.
SAT NIGHT
S WINDS 10 TO 15 KT WITH GUSTS 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
BECOMING N. 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.
ANZ543-180800-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
447 PM EDT FRI APR 17 2026
REST OF THIS AFTERNOON
W WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
N WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
SAT
E WINDS 10 TO 15 KT. WAVES 1 FT.
SAT NIGHT...SE WINDS 10 TO 15 KT
BECOMING S AFTER MIDNIGHT. 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
BECOMING N. WAVES 1 FT.
TUE...N WINDS 5 TO 10 KT
BECOMING S 15 TO 20 KT. WAVES 1 TO 2 FT.
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