225
FZUS51 KLWX 120259
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1058 PM EDT TUE AUG 11 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.
ANZ500-120800-
1058 PM EDT TUE AUG 11 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
HIGH PRESSURE WILL BE PERSISTENT OFF THE EAST COAST INTO THE MIDDLE
OF THE WEEK WHILE A COLD FRONT GRADUALLY APPROACHES FROM THE NORTH.
DAILY THUNDERSTORM CHANCES CONTINUE FOR THE REMAINDER OF THE WEEK.
GUSTY WINDS AND FREQUENT CLOUD TO GROUND LIGHTNING WILL BE THE
PRIMARY THREATS WITH ANY STORMS. THE FRONT MAY PUSH TO THE SOUTH BY
FRIDAY NIGHT. SMALL CRAFT ADVISORIES MAY BE NEEDED FRIDAY NIGHT.
ANZ535-120800-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
1058 PM EDT TUE AUG 11 2026
REST OF TONIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF
SHOWERS AND TSTMS LATE THIS EVENING, THEN A SLIGHT CHANCE OF SHOWERS
AND TSTMS.
WED
NW WINDS AROUND 5 KT. WAVES 1 FT.
WED NIGHT
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
THU
W WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
THU NIGHT
W WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI
NW WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI NIGHT
N WINDS AROUND 5 KT. WAVES 1 FT.
SAT
E WINDS AROUND 5 KT. WAVES 1 FT.
SUN
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS THROUGH
THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ536-120800-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
1058 PM EDT TUE AUG 11 2026
REST OF TONIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT. A SLIGHT CHANCE
OF SHOWERS AND TSTMS LATE THIS EVENING, THEN A SLIGHT CHANCE OF
SHOWERS.
WED
NW WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
W WINDS AROUND 5 KT. WAVES 1 FT.
THU
W WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
THU NIGHT
SW WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI
NW WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
FRI NIGHT
N WINDS AROUND 5 KT. WAVES 1 FT.
SAT
E WINDS AROUND 5 KT. WAVES 1 FT.
SUN
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS THROUGH
THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ537-120800-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
1058 PM EDT TUE AUG 11 2026
REST OF TONIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT. A SLIGHT CHANCE
OF SHOWERS AND TSTMS.
WED
NW WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
THU
W WINDS 5 KT. WAVES FLAT.
THU NIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF
SHOWERS.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
FRI NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
SAT...NE WINDS 5 TO 10 KT
BECOMING S AFTER MIDNIGHT. WAVES 1 FT.
SUN...S WINDS 5 KT
INCREASING TO 10 TO 15 KT. WAVES 1 TO 2 FT. A
CHANCE OF SHOWERS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ530-120800-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
1058 PM EDT TUE AUG 11 2026
REST OF TONIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF
SHOWERS AND TSTMS LATE THIS EVENING, THEN A SLIGHT CHANCE OF SHOWERS
AND TSTMS.
WED
NW WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
W WINDS AROUND 5 KT. WAVES 1 FT.
THU
W WINDS 5 KT. WAVES LESS THAN 1 FT.
THU NIGHT
SW WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI
N WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT.
SAT...N WINDS 5 TO 10 KT
BECOMING SE AFTER MIDNIGHT. WAVES 1 FT.
SUN...S WINDS 10 TO 15 KT
BECOMING SW AFTER MIDNIGHT. WAVES 1 TO
2 FT. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ531-120800-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
1058 PM EDT TUE AUG 11 2026
REST OF TONIGHT
W WINDS 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS
AND TSTMS LATE THIS EVENING, THEN A SLIGHT CHANCE OF SHOWERS AND
TSTMS.
WED
NW WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT.
THU
W WINDS 5 KT. WAVES LESS THAN 1 FT.
THU NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI NIGHT
N WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT.
SAT...NE WINDS 5 TO 10 KT
BECOMING S AFTER MIDNIGHT. WAVES 1 TO
2 FT...SUBSIDING TO FLAT.
SUN
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS
THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ538-120800-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
1058 PM EDT TUE AUG 11 2026
REST OF TONIGHT
W WINDS 5 KT. WAVES FLAT. A CHANCE OF SHOWERS AND
TSTMS LATE THIS EVENING, THEN A SLIGHT CHANCE OF SHOWERS AND TSTMS.
WED
NW WINDS 5 KT. WAVES FLAT.
WED NIGHT
W WINDS 5 KT. WAVES FLAT.
THU
W WINDS 5 KT. WAVES FLAT. A CHANCE OF SHOWERS.
THU NIGHT
SW WINDS AROUND 5 KT. WAVES FLAT. A CHANCE OF SHOWERS.
FRI
N WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
FRI NIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT.
SAT...NE WINDS 5 TO 10 KT
BECOMING LIGHT. WAVES 1 FT OR LESS.
SUN
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ539-120800-
CHESTER RIVER TO QUEENSTOWN MD-
1058 PM EDT TUE AUG 11 2026
REST OF TONIGHT
W WINDS 10 KT. WAVES 1 FT OR LESS. A CHANCE OF
SHOWERS AND TSTMS LATE THIS EVENING, THEN A SLIGHT CHANCE OF SHOWERS
AND TSTMS.
WED
NW WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
THU
W WINDS 5 KT. WAVES LESS THAN 1 FT.
THU NIGHT
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF
SHOWERS.
FRI
N WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
FRI NIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT.
SAT...NE WINDS 5 TO 10 KT
BECOMING S AFTER MIDNIGHT. WAVES 1 FT
OR LESS.
SUN
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS THROUGH
THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ532-120800-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
1058 PM EDT TUE AUG 11 2026
REST OF TONIGHT
W WINDS 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS
AND TSTMS LATE THIS EVENING, THEN A CHANCE OF SHOWERS WITH A SLIGHT
CHANCE OF TSTMS.
WED
NW WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT.
THU
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
THU NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI NIGHT...N WINDS 5 KT
BECOMING NE 10 TO 15 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT.
SAT...NE WINDS 10 TO 15 KT
BECOMING SE AROUND 5 KT. WAVES 1 TO
2 FT.
SUN
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS
THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ540-120800-
EASTERN BAY-
1058 PM EDT TUE AUG 11 2026
REST OF TONIGHT
W WINDS 10 KT. WAVES 1 FT OR LESS. A CHANCE OF
SHOWERS AND TSTMS LATE THIS EVENING, THEN A CHANCE OF SHOWERS WITH A
SLIGHT CHANCE OF TSTMS.
WED
NW WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
THU
W WINDS 5 KT. WAVES FLAT.
THU NIGHT
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF
SHOWERS.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI NIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT.
SAT...NE WINDS 5 TO 10 KT
BECOMING S AFTER MIDNIGHT. WAVES 1 FT
OR LESS.
SUN
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS
THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ533-120800-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
1058 PM EDT TUE AUG 11 2026
REST OF TONIGHT
W WINDS 10 KT. WAVES 1 FT. A SLIGHT CHANCE OF
SHOWERS AND TSTMS.
WED
NW WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT.
THU
W WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
THU NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
FRI NIGHT
N WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
SAT...NE WINDS 10 TO 15 KT
BECOMING SE 5 KT. WAVES 1 TO 2 FT.
SUN
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS
THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ541-120800-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
1058 PM EDT TUE AUG 11 2026
REST OF TONIGHT
W WINDS 10 KT. WAVES 1 FT. A SLIGHT CHANCE OF
TSTMS. A SLIGHT CHANCE OF SHOWERS LATE THIS EVENING, THEN A CHANCE
OF SHOWERS.
WED
NW WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
THU
W WINDS 5 KT. WAVES LESS THAN 1 FT.
THU NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF
SHOWERS.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI NIGHT
N WINDS 10 TO 15 KT. WAVES 1 FT.
SAT...N WINDS 10 TO 15 KT
BECOMING SE AROUND 5 KT. WAVES 1 FT.
SUN
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS
THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ542-120800-
PATUXENT RIVER TO BROOMES ISLAND MD-
1058 PM EDT TUE AUG 11 2026
REST OF TONIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT. A SLIGHT
CHANCE OF SHOWERS AND TSTMS.
WED
NW WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
SW WINDS AROUND 5 KT. WAVES 1 FT.
THU
W WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
THU NIGHT
SW WINDS AROUND 5 KT. WAVES 1 FT. SHOWERS LIKELY.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
FRI NIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT.
SAT...NE WINDS 5 TO 10 KT
BECOMING S AFTER MIDNIGHT. WAVES 1 FT.
SUN
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS THROUGH
THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ534-120800-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
1058 PM EDT TUE AUG 11 2026
REST OF TONIGHT...W WINDS 10 KT
BECOMING NW LATE. WAVES 1 FT. A
SLIGHT CHANCE OF SHOWERS AND TSTMS.
WED...NW WINDS 10 TO 15 KT
DIMINISHING TO 5 KT LATE. WAVES 1 FT.
WED NIGHT...NW WINDS 5 KT
BECOMING SW IN THE LATE EVENING AND
OVERNIGHT. WAVES 1 FT.
THU
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
THU NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
FRI NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
SAT...NE WINDS 5 TO 10 KT
BECOMING S AFTER MIDNIGHT. WAVES 1 TO
2 FT.
SUN...S WINDS 15 TO 20 KT. WAVES 1 FT
BUILDING TO 3 FT. A CHANCE
OF SHOWERS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ543-120800-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
1058 PM EDT TUE AUG 11 2026
REST OF TONIGHT...W WINDS 10 KT
BECOMING NW LATE. WAVES 1 FT. A
SLIGHT CHANCE OF SHOWERS AND TSTMS.
WED
NW WINDS 10 TO 15 KT. WAVES 1 FT.
WED NIGHT...NW WINDS 5 KT
BECOMING SW IN THE LATE EVENING AND
OVERNIGHT. WAVES 1 FT OR LESS.
THU
W WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
FRI NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
SAT...NE WINDS 5 TO 10 KT
BECOMING S AFTER MIDNIGHT. WAVES 1 FT.
SUN
S WINDS 15 TO 20 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS
THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page