175
FZUS51 KLWX 140258
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1058 PM EDT THU AUG 13 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.
ANZ500-140800-
1058 PM EDT THU AUG 13 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
A STATIONARY FRONTAL BOUNDARY WILL REMAIN OFF TO THE SOUTH NEAR THE
VIRGINIA-NORTH CAROLINA BORDER THROUGH TONIGHT. THIS SYSTEM RETURNS
NORTHWARD AS A WARM FRONT FRIDAY WHICH INCREASES THUNDERSTORM
CHANCES. HIGH PRESSURE BUILDS ACROSS THE NORTHEASTERN U.S ON
SATURDAY BEFORE ANOTHER FRONTAL SYSTEM APPROACHES FROM THE WEST ON
SUNDAY INTO MONDAY. SMALL CRAFT ADVISORIES MAY BE NEEDED SUNDAY
AFTERNOON INTO THE NIGHT DUE TO SOUTHERLY CHANNELING.
ANZ535-140800-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
1058 PM EDT THU AUG 13 2026
REST OF TONIGHT
LIGHT WINDS. WAVES FLAT.
FRI
NE WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI NIGHT
NE WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS
AND TSTMS.
SAT
NE WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT NIGHT
SE WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN
S WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A CHANCE
OF SHOWERS AND TSTMS.
SUN NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS
AND TSTMS.
MON
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS. A
CHANCE OF TSTMS THROUGH THE NIGHT.
TUE
N WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ536-140800-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
1058 PM EDT THU AUG 13 2026
REST OF TONIGHT
NE WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
FRI
NE WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI NIGHT
NE WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS
AND TSTMS.
SAT
NE WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
SAT NIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF
SHOWERS.
SUN
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
SUN NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS
AND TSTMS.
MON
NW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF TSTMS
THROUGH THE NIGHT. A CHANCE OF SHOWERS.
TUE
N WINDS AROUND 5 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ537-140800-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
1058 PM EDT THU AUG 13 2026
REST OF TONIGHT
SE WINDS 5 KT. WAVES FLAT.
FRI
NE WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF
SHOWERS.
FRI NIGHT
NE WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF
SHOWERS.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT. A
CHANCE OF SHOWERS AND TSTMS.
SUN NIGHT...S WINDS 10 TO 15 KT
BECOMING SW 5 TO 10 KT AFTER
MIDNIGHT. GUSTS UP TO 20 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS
AND TSTMS.
MON
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF TSTMS THROUGH
THE NIGHT. A CHANCE OF SHOWERS.
TUE...N WINDS 5 TO 10 KT
BECOMING SE. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ530-140800-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
1058 PM EDT THU AUG 13 2026
REST OF TONIGHT
N WINDS 5 KT. WAVES FLAT.
FRI
E WINDS AROUND 5 KT. WAVES FLAT.
FRI NIGHT...E WINDS AROUND 5 KT
BECOMING NE LATE. WAVES 1 FT OR
LESS. A CHANCE OF SHOWERS.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. SHOWERS
LIKELY WITH A CHANCE OF TSTMS.
SUN NIGHT...SW WINDS 10 TO 15 KT
BECOMING W 5 TO 10 KT AFTER
MIDNIGHT. GUSTS UP TO 20 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
MON
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS IN THE
MORNING, THEN A CHANCE OF SHOWERS AND TSTMS THROUGH THE NIGHT.
TUE...N WINDS 5 TO 10 KT
BECOMING SE. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ531-140800-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
1058 PM EDT THU AUG 13 2026
REST OF TONIGHT
N WINDS 5 KT. WAVES FLAT.
FRI
NE WINDS AROUND 5 KT. WAVES FLAT.
FRI NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF
SHOWERS.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. SHOWERS
LIKELY WITH A CHANCE OF TSTMS.
SUN NIGHT...S WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. GUSTS
UP TO 20 KT. WAVES 2 FT. SHOWERS LIKELY WITH A CHANCE OF TSTMS.
MON
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS IN THE
MORNING, THEN A CHANCE OF SHOWERS AND TSTMS THROUGH THE NIGHT.
TUE...N WINDS 5 TO 10 KT
BECOMING SE. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ538-140800-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
1058 PM EDT THU AUG 13 2026
REST OF TONIGHT
N WINDS AROUND 5 KT. WAVES FLAT.
FRI
NE WINDS 5 KT. WAVES FLAT.
FRI NIGHT
NE WINDS AROUND 5 KT. WAVES FLAT. A CHANCE OF SHOWERS.
SAT
NE WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
SAT NIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF
SHOWERS.
SUN
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. SHOWERS
LIKELY WITH A CHANCE OF TSTMS.
SUN NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
MON
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
IN THE MORNING, THEN A CHANCE OF SHOWERS AND TSTMS THROUGH THE
NIGHT.
TUE
E WINDS AROUND 5 KT. WAVES FLAT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ539-140800-
CHESTER RIVER TO QUEENSTOWN MD-
1058 PM EDT THU AUG 13 2026
REST OF TONIGHT
NW WINDS AROUND 5 KT. WAVES FLAT.
FRI
NE WINDS AROUND 5 KT. WAVES FLAT.
FRI NIGHT
NE WINDS AROUND 5 KT. WAVES FLAT. A CHANCE OF SHOWERS.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
SHOWERS LIKELY WITH A CHANCE OF TSTMS.
SUN NIGHT...S WINDS 10 TO 15 KT
BECOMING W 5 TO 10 KT AFTER
MIDNIGHT. GUSTS UP TO 20 KT. WAVES 1 TO 2 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
MON
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS IN THE
MORNING, THEN A CHANCE OF SHOWERS AND TSTMS THROUGH THE NIGHT.
TUE...N WINDS 5 TO 10 KT
BECOMING SE. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ532-140800-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
1058 PM EDT THU AUG 13 2026
REST OF TONIGHT
NW WINDS 5 KT. WAVES FLAT.
FRI
NE WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI NIGHT
NE WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF
SHOWERS.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 TO 3 FT. A
CHANCE OF SHOWERS AND TSTMS.
SUN NIGHT...S WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. GUSTS
UP TO 20 KT. WAVES 2 TO 3 FT. SHOWERS LIKELY WITH A CHANCE OF TSTMS.
MON
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS. A
CHANCE OF TSTMS THROUGH THE NIGHT.
TUE...NE WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ540-140800-
EASTERN BAY-
1058 PM EDT THU AUG 13 2026
REST OF TONIGHT
NW WINDS AROUND 5 KT. WAVES FLAT.
FRI
NE WINDS AROUND 5 KT. WAVES FLAT.
FRI NIGHT
NE WINDS AROUND 5 KT. WAVES FLAT. A CHANCE OF SHOWERS.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A CHANCE
OF SHOWERS AND TSTMS.
SUN NIGHT...S WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. GUSTS
UP TO 20 KT. WAVES 1 TO 2 FT. SHOWERS LIKELY WITH A CHANCE OF TSTMS.
MON
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS. A
CHANCE OF TSTMS THROUGH THE NIGHT.
TUE...N WINDS 5 TO 10 KT
BECOMING SE. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ533-140800-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
1058 PM EDT THU AUG 13 2026
REST OF TONIGHT
S WINDS 5 KT. WAVES FLAT.
FRI
NE WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI NIGHT
NE WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF
SHOWERS.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN...S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT
BUILDING TO 3 FT IN THE AFTERNOON. A CHANCE OF SHOWERS AND TSTMS.
SUN NIGHT...S WINDS 10 TO 15 KT
BECOMING SW AFTER MIDNIGHT. GUSTS
UP TO 20 KT. WAVES 2 TO 3 FT. A CHANCE OF SHOWERS AND TSTMS.
MON
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF TSTMS THROUGH
THE NIGHT. A CHANCE OF SHOWERS.
TUE...N WINDS 5 TO 10 KT
BECOMING SE. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ541-140800-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
1058 PM EDT THU AUG 13 2026
REST OF TONIGHT
S WINDS 5 KT. WAVES FLAT.
FRI
NE WINDS 5 KT. WAVES FLAT.
FRI NIGHT
NE WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF
SHOWERS.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT. A
CHANCE OF SHOWERS AND TSTMS.
SUN NIGHT...S WINDS 10 TO 15 KT
BECOMING SW AFTER MIDNIGHT. GUSTS
UP TO 20 KT. WAVES 1 TO 2 FT. SHOWERS LIKELY WITH A CHANCE OF TSTMS.
MON
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS. A
CHANCE OF TSTMS THROUGH THE NIGHT.
TUE...N WINDS 5 TO 10 KT
BECOMING SE. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ542-140800-
PATUXENT RIVER TO BROOMES ISLAND MD-
1058 PM EDT THU AUG 13 2026
REST OF TONIGHT
LIGHT WINDS. WAVES 1 FT OR LESS. A SLIGHT CHANCE
OF SHOWERS.
FRI
NE WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI NIGHT
NE WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT
NE WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
SAT NIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF
SHOWERS.
SUN
S WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A CHANCE
OF SHOWERS AND TSTMS.
SUN NIGHT
SW WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A
CHANCE OF SHOWERS AND TSTMS.
MON
NW WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF TSTMS THROUGH
THE NIGHT. A CHANCE OF SHOWERS.
TUE
E WINDS AROUND 5 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ534-140800-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
1058 PM EDT THU AUG 13 2026
REST OF TONIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI
NE WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
FRI NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT NIGHT
SE WINDS 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN
S WINDS 10 TO 15 KT. GUSTS UP TO 25 KT IN THE AFTERNOON.
WAVES 2 TO 3 FT. A CHANCE OF SHOWERS AND TSTMS.
SUN NIGHT...S WINDS 15 KT
BECOMING SW AFTER MIDNIGHT. GUSTS UP TO
25 KT. WAVES 2 TO 3 FT. A CHANCE OF SHOWERS AND TSTMS.
MON
NW WINDS 5 TO 10 KT. WAVES 1 TO 2 FT. A CHANCE OF TSTMS
THROUGH THE NIGHT. A CHANCE OF SHOWERS.
TUE...N WINDS 5 TO 10 KT
BECOMING SE. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ543-140800-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
1058 PM EDT THU AUG 13 2026
REST OF TONIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI
E WINDS 5 KT. WAVES FLAT. A CHANCE OF SHOWERS.
FRI NIGHT
E WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF
SHOWERS.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT. A
CHANCE OF SHOWERS.
SUN NIGHT...S WINDS 15 TO 20 KT
BECOMING SW AFTER MIDNIGHT. WAVES
2 FT. A CHANCE OF SHOWERS AND TSTMS.
MON
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF TSTMS THROUGH
THE NIGHT. A CHANCE OF SHOWERS.
TUE...NE WINDS 5 TO 10 KT
BECOMING SE AFTER MIDNIGHT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
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