599
FZUS51 KLWX 230259
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1059 PM EDT WED APR 22 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.
ANZ500-230800-
1059 PM EDT WED APR 22 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
A COLD FRONT WILL STALL SOUTHWEST OF THE POTOMAC RIVER ON THURSDAY.
THE FRONT WILL LIFT BACK NORTHWARD AS A WARM FRONT FRIDAY INTO
SATURDAY, THEN WILL BE FOLLOWED BY A COLD FRONT SATURDAY NIGHT.
SMALL CRAFT ADVISORIES MAY BE NEEDED FOR PORTIONS OF THE WATERS IN
EAST TO SOUTHEAST FLOW FRIDAY NIGHT INTO SATURDAY.
ANZ535-230800-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
1059 PM EDT WED APR 22 2026
REST OF TONIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT.
THU
NW WINDS AROUND 5 KT. WAVES 1 FT.
THU NIGHT
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
FRI
NE WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI NIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF
SHOWERS.
SAT
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
SAT NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS.
SUN
NE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY, MAINLY IN
THE MORNING.
MON
E WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS THROUGH
THE NIGHT.
ANZ536-230800-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
1059 PM EDT WED APR 22 2026
REST OF TONIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT.
THU
NW WINDS AROUND 5 KT. WAVES 1 FT.
THU NIGHT
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
FRI
N WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
SAT NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS.
SUN
NE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY, MAINLY IN
THE MORNING.
MON...E WINDS 5 TO 10 KT
BECOMING SE AFTER MIDNIGHT. WAVES 1 FT.
A CHANCE OF SHOWERS THROUGH THE NIGHT.
ANZ537-230800-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
1059 PM EDT WED APR 22 2026
REST OF TONIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT.
THU
W WINDS 5 KT. WAVES LESS THAN 1 FT.
THU NIGHT
S WINDS AROUND 5 KT. WAVES FLAT.
FRI
NE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS.
FRI NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT
E WINDS 10 TO 15 KT. WAVES 2 FT. A CHANCE OF SHOWERS.
SAT NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
SHOWERS.
SUN
NE WINDS 10 TO 15 KT. WAVES 2 FT. SHOWERS LIKELY IN THE
MORNING, THEN A CHANCE OF SHOWERS THROUGH THE NIGHT.
MON...E WINDS 5 TO 10 KT
BECOMING SE AFTER MIDNIGHT. WAVES 1 TO
2 FT. A CHANCE OF SHOWERS THROUGH THE NIGHT.
ANZ530-230800-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
1059 PM EDT WED APR 22 2026
REST OF TONIGHT
NE WINDS 5 KT. WAVES FLAT.
THU
NW WINDS AROUND 5 KT. WAVES FLAT.
THU NIGHT
NE WINDS AROUND 5 KT. WAVES FLAT.
FRI
E WINDS AROUND 5 KT. WAVES FLAT.
FRI NIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF
SHOWERS.
SAT
E WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. SHOWERS
LIKELY.
SAT NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SHOWERS.
SUN
NE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. SHOWERS LIKELY,
MAINLY IN THE MORNING.
MON
E WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
AFTER MIDNIGHT.
ANZ531-230800-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
1059 PM EDT WED APR 22 2026
REST OF TONIGHT
NW WINDS 5 KT. WAVES LESS THAN 1 FT. PATCHY FOG
WITH VSBY 1 TO 3 NM.
THU
W WINDS 5 KT. WAVES LESS THAN 1 FT. PATCHY FOG. VSBY 1 TO
3 NM.
THU NIGHT
SE WINDS AROUND 5 KT. WAVES FLAT.
FRI
E WINDS 5 KT. WAVES FLAT.
FRI NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT
E WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
SHOWERS LIKELY.
SAT NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
SHOWERS.
SUN...NE WINDS 10 TO 15 KT
DIMINISHING TO 5 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT. SHOWERS LIKELY, MAINLY IN THE MORNING.
MON
E WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AFTER
MIDNIGHT.
ANZ538-230800-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
1059 PM EDT WED APR 22 2026
REST OF TONIGHT
NW WINDS 5 KT. WAVES FLAT.
THU
N WINDS AROUND 5 KT. WAVES FLAT.
THU NIGHT
E WINDS AROUND 5 KT. WAVES FLAT.
FRI
E WINDS 5 KT. WAVES FLAT. A CHANCE OF SHOWERS.
FRI NIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF
SHOWERS.
SAT
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
SAT NIGHT
NE WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SHOWERS.
SUN
NE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY, MAINLY IN
THE MORNING.
MON
E WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS AFTER
MIDNIGHT.
ANZ539-230800-
CHESTER RIVER TO QUEENSTOWN MD-
1059 PM EDT WED APR 22 2026
REST OF TONIGHT
W WINDS 5 KT. WAVES FLAT. PATCHY FOG WITH VSBY
1 TO 3 NM.
THU
NW WINDS 5 KT. WAVES FLAT. PATCHY FOG. VSBY 1 TO 3 NM.
THU NIGHT
SE WINDS AROUND 5 KT. WAVES FLAT.
FRI
NE WINDS 5 KT. WAVES FLAT.
FRI NIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF
SHOWERS.
SAT
E WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. SHOWERS
LIKELY.
SAT NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SHOWERS.
SUN...NE WINDS 10 TO 15 KT
DIMINISHING TO AROUND 5 KT AFTER
MIDNIGHT. WAVES 1 FT. SHOWERS LIKELY, MAINLY IN THE MORNING.
MON...E WINDS 5 KT
BECOMING SE. WAVES 1 FT OR LESS. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
ANZ532-230800-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
1059 PM EDT WED APR 22 2026
REST OF TONIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT.
THU
NE WINDS 5 KT. WAVES LESS THAN 1 FT.
THU NIGHT
SE WINDS AROUND 5 KT. WAVES FLAT.
FRI
NE WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
FRI NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT
E WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
SHOWERS LIKELY.
SAT NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
SHOWERS.
SUN...NE WINDS 15 TO 20 KT
DIMINISHING TO 5 TO 10 KT AFTER
MIDNIGHT. WAVES 1 TO 2 FT. SHOWERS LIKELY, MAINLY IN THE MORNING.
MON...NE WINDS 5 TO 10 KT
BECOMING SE. WAVES 1 TO 2 FT. A CHANCE
OF SHOWERS AFTER MIDNIGHT.
ANZ540-230800-
EASTERN BAY-
1059 PM EDT WED APR 22 2026
REST OF TONIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT. PATCHY FOG
WITH VSBY 1 TO 3 NM.
THU
NW WINDS 5 KT. WAVES LESS THAN 1 FT. PATCHY FOG. VSBY 1 TO
3 NM.
THU NIGHT
SE WINDS AROUND 5 KT. WAVES FLAT.
FRI
NE WINDS AROUND 5 KT. WAVES FLAT.
FRI NIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF
SHOWERS.
SAT
E WINDS 10 TO 15 KT. WAVES 1 FT. SHOWERS LIKELY.
SAT NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SHOWERS.
SUN...NE WINDS 10 TO 15 KT
DIMINISHING TO 5 KT AFTER MIDNIGHT.
WAVES 1 FT. SHOWERS LIKELY, MAINLY IN THE MORNING.
MON...NE WINDS 5 TO 10 KT
BECOMING SE. WAVES 1 FT OR LESS. A
CHANCE OF SHOWERS AFTER MIDNIGHT.
ANZ533-230800-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
1059 PM EDT WED APR 22 2026
REST OF TONIGHT...SW WINDS 5 TO 10 KT
BECOMING NW LATE. WAVES
1 FT.
THU
N WINDS 5 KT. WAVES LESS THAN 1 FT.
THU NIGHT
S WINDS AROUND 5 KT. WAVES FLAT.
FRI
NE WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
FRI NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT
E WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
SHOWERS LIKELY.
SAT NIGHT
NE WINDS 15 TO 20 KT. WAVES 2 TO 3 FT. SHOWERS.
SUN...NE WINDS 15 TO 20 KT
DIMINISHING TO 5 TO 10 KT AFTER
MIDNIGHT. WAVES 2 TO 3 FT...SUBSIDING TO 1 FT AFTER MIDNIGHT.
SHOWERS LIKELY, MAINLY IN THE MORNING.
MON...E WINDS 10 TO 15 KT
BECOMING SE AFTER MIDNIGHT. WAVES 1 TO
2 FT. A CHANCE OF SHOWERS AFTER MIDNIGHT.
ANZ541-230800-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
1059 PM EDT WED APR 22 2026
REST OF TONIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT.
THU
NW WINDS AROUND 5 KT. WAVES 1 FT.
THU NIGHT
S WINDS AROUND 5 KT. WAVES FLAT.
FRI
NE WINDS 5 KT. WAVES FLAT.
FRI NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT
E WINDS 10 TO 15 KT. WAVES 1 FT. SHOWERS LIKELY.
SAT NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
SHOWERS.
SUN
NE WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. SHOWERS LIKELY, MAINLY
IN THE MORNING.
MON...NE WINDS 5 TO 10 KT
BECOMING SE. WAVES 1 FT. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
ANZ542-230800-
PATUXENT RIVER TO BROOMES ISLAND MD-
1059 PM EDT WED APR 22 2026
REST OF TONIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT.
THU
N WINDS AROUND 5 KT. WAVES 1 FT.
THU NIGHT
LIGHT WINDS. WAVES 1 FT.
FRI
NE WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI NIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF
SHOWERS.
SAT
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
SAT NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS.
SUN...NE WINDS 10 TO 15 KT
DIMINISHING TO 5 KT AFTER MIDNIGHT.
WAVES 1 FT. SHOWERS LIKELY IN THE MORNING, THEN A CHANCE OF SHOWERS
THROUGH THE NIGHT.
MON...E WINDS 5 TO 10 KT
BECOMING SE AFTER MIDNIGHT. WAVES 1 FT.
A CHANCE OF SHOWERS THROUGH THE NIGHT.
ANZ534-230800-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
1059 PM EDT WED APR 22 2026
REST OF TONIGHT...SW WINDS 5 TO 10 KT
BECOMING W LATE. WAVES
1 FT.
THU...NW WINDS 5 TO 10 KT
BECOMING SE LATE. WAVES 1 FT.
THU NIGHT
SW WINDS AROUND 5 KT. WAVES FLAT.
FRI
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI NIGHT
SE WINDS 10 KT. WAVES 2 FT. A CHANCE OF SHOWERS.
SAT
E WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A CHANCE
OF SHOWERS.
SAT NIGHT
NE WINDS 15 TO 20 KT. WAVES 2 TO 3 FT. SHOWERS.
SUN
NE WINDS 15 TO 20 KT. WAVES 2 TO 3 FT. SHOWERS LIKELY IN THE
MORNING, THEN A CHANCE OF SHOWERS THROUGH THE NIGHT.
MON...E WINDS 10 TO 15 KT
BECOMING SE AFTER MIDNIGHT. WAVES 1 TO
2 FT. A CHANCE OF SHOWERS THROUGH THE NIGHT.
ANZ543-230800-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
1059 PM EDT WED APR 22 2026
REST OF TONIGHT...SW WINDS 5 KT
BECOMING NW LATE. WAVES 1 FT.
THU
W WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
S WINDS 5 KT. WAVES FLAT.
FRI
E WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
SE WINDS 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT
E WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A CHANCE
OF SHOWERS.
SAT NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. SHOWERS.
SUN...NE WINDS 15 TO 20 KT
DIMINISHING TO 5 TO 10 KT AFTER
MIDNIGHT. WAVES 1 TO 2 FT. SHOWERS LIKELY IN THE MORNING, THEN A
CHANCE OF SHOWERS THROUGH THE NIGHT.
MON...E WINDS 10 TO 15 KT
BECOMING SE 5 TO 10 KT AFTER MIDNIGHT.
WAVES 1 FT. A CHANCE OF SHOWERS AFTER MIDNIGHT.
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