042
FZUS51 KLWX 180258
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1058 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-
1058 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-
1058 PM EDT FRI APR 17 2026
REST OF TONIGHT
LIGHT WINDS. WAVES FLAT.
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-
1058 PM EDT FRI APR 17 2026
REST OF TONIGHT
NE WINDS AROUND 5 KT. 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-
1058 PM EDT FRI APR 17 2026
REST OF TONIGHT
E WINDS AROUND 5 KT. WAVES FLAT.
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-
1058 PM EDT FRI APR 17 2026
REST OF TONIGHT
NE WINDS 5 KT. WAVES FLAT.
SAT
SE WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
WAVES 1 FT. PATCHY FOG. VSBY 1 TO 3 NM.
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-
1058 PM EDT FRI APR 17 2026
REST OF TONIGHT
NE WINDS 5 KT. WAVES LESS THAN 1 FT.
SAT
E WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON. WAVES
1 FT. PATCHY FOG. VSBY 1 TO 3 NM.
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-
1058 PM EDT FRI APR 17 2026
REST OF TONIGHT
NE WINDS AROUND 5 KT. WAVES FLAT.
SAT
E WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON. WAVES
1 FT. PATCHY FOG. VSBY 1 TO 3 NM.
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-
1058 PM EDT FRI APR 17 2026
REST OF TONIGHT
NE WINDS 5 KT. WAVES FLAT.
SAT
E WINDS 5 TO 10 KT. WAVES 1 FT. PATCHY FOG. VSBY 1 TO 3 NM.
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-
1058 PM EDT FRI APR 17 2026
REST OF TONIGHT
NE WINDS 5 KT. WAVES LESS THAN 1 FT.
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-
1058 PM EDT FRI APR 17 2026
REST OF TONIGHT
NE WINDS 5 KT. WAVES FLAT.
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-
1058 PM EDT FRI APR 17 2026
REST OF TONIGHT
NE WINDS 5 KT. WAVES LESS THAN 1 FT.
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-
1058 PM EDT FRI APR 17 2026
REST OF TONIGHT
NE WINDS 5 KT. WAVES FLAT.
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-
1058 PM EDT FRI APR 17 2026
REST OF TONIGHT
NE WINDS AROUND 5 KT. 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-
1058 PM EDT FRI APR 17 2026
REST OF TONIGHT
NE 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-
1058 PM EDT FRI APR 17 2026
REST OF TONIGHT
N WINDS 5 KT. WAVES FLAT.
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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