889
FZUS51 KLWX 100858
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
457 AM EDT MON AUG 10 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.
ANZ500-102300-
457 AM EDT MON AUG 10 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. SHOWER AND THUNDERSTORM CHANCES RETURN TODAY AND
CONTINUE THROUGH MUCH OF THE UPCOMING WEEK. GUSTY WINDS AND FREQUENT
CLOUD TO GROUND LIGHTNING WILL BE THE PRIMARY THREATS WITH ANY
STORMS. SPECIAL MARINE WARNINGS WILL BE A POSSIBILITY EACH DAY
TODAY THROUGH FRIDAY.
ANZ535-102300-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
457 AM EDT MON AUG 10 2026
REST OF THE OVERNIGHT
LIGHT WINDS. WAVES FLAT.
TODAY
W WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
TONIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
TUE
NW WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
TUE NIGHT
W WINDS AROUND 5 KT. WAVES 1 FT. SHOWERS LIKELY.
WED
NW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
WED NIGHT
S WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
THU
NW WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
N WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS THROUGH
THE DAY.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ536-102300-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
457 AM EDT MON AUG 10 2026
REST OF THE OVERNIGHT
LIGHT WINDS. WAVES FLAT.
TODAY
SW WINDS 5 TO 10 KT. WAVES 1 FT.
TONIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
NW WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
TUE NIGHT
W WINDS AROUND 5 KT. WAVES 1 FT. SHOWERS LIKELY.
WED
NW WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WED NIGHT
SW WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
THU
NW WINDS AROUND 5 KT. WAVES 1 FT.
FRI
N WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
ANZ537-102300-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
457 AM EDT MON AUG 10 2026
REST OF THE OVERNIGHT
W WINDS 5 KT. WAVES FLAT.
TODAY
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TONIGHT...SW WINDS 5 TO 10 KT
BECOMING NW LATE. WAVES 1 FT.
TUE
NW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
TUE NIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS LIKELY.
WED
NW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
WED NIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF
SHOWERS AND TSTMS.
THU
W WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ530-102300-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
457 AM EDT MON AUG 10 2026
REST OF THE OVERNIGHT
LIGHT WINDS. WAVES FLAT.
TODAY...NW WINDS AROUND 5 KT
BECOMING SW IN THE AFTERNOON. WAVES
1 FT. A CHANCE OF SHOWERS AND TSTMS.
TONIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
TUE
NW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
TUE NIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF
SHOWERS.
WED
NW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
WED NIGHT
W WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
THU
NW WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
N WINDS 5 TO 10 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ531-102300-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
457 AM EDT MON AUG 10 2026
REST OF THE OVERNIGHT
W WINDS 5 KT. WAVES FLAT.
TODAY...W WINDS AROUND 5 KT
BECOMING S IN THE AFTERNOON. WAVES
1 FT OR LESS. A CHANCE OF SHOWERS AND TSTMS.
TONIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
TUE
W WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
TUE NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
WED
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS.
WED NIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF
SHOWERS.
THU
NW WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
NE WINDS 5 TO 10 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ538-102300-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
457 AM EDT MON AUG 10 2026
REST OF THE OVERNIGHT
LIGHT WINDS. WAVES FLAT.
TODAY
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF
SHOWERS AND TSTMS.
TONIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF
SHOWERS AND TSTMS.
TUE
NW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
TUE NIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF
SHOWERS.
WED
W WINDS 5 KT. WAVES FLAT. A CHANCE OF SHOWERS.
WED NIGHT
SW WINDS 5 KT. WAVES FLAT. A CHANCE OF SHOWERS.
THU
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
FRI
NE WINDS 5 KT. WAVES LESS THAN 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ539-102300-
CHESTER RIVER TO QUEENSTOWN MD-
457 AM EDT MON AUG 10 2026
REST OF THE OVERNIGHT
W WINDS 5 KT. WAVES FLAT.
TODAY
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF
SHOWERS AND TSTMS.
TONIGHT...SW WINDS 5 TO 10 KT
BECOMING NW LATE. WAVES 1 FT. A
CHANCE OF SHOWERS AND TSTMS.
TUE
W WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
TUE NIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS LIKELY.
WED
NW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED NIGHT
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF
SHOWERS.
THU
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI
N WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ532-102300-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
457 AM EDT MON AUG 10 2026
REST OF THE OVERNIGHT
W WINDS 5 KT. WAVES FLAT.
TODAY...W WINDS AROUND 5 KT
BECOMING S IN THE AFTERNOON. WAVES
1 FT OR LESS. A CHANCE OF SHOWERS AND TSTMS.
TONIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
TUE
W WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
TUE NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
WED
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WED NIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF
SHOWERS.
THU
W WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
NE WINDS 5 TO 10 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ540-102300-
EASTERN BAY-
457 AM EDT MON AUG 10 2026
REST OF THE OVERNIGHT
LIGHT WINDS. WAVES FLAT.
TODAY
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF
SHOWERS AND TSTMS.
TONIGHT...SW WINDS 5 TO 10 KT
BECOMING NW LATE. WAVES 1 FT. A
CHANCE OF SHOWERS AND TSTMS.
TUE
NW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
TUE NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
WED
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WED NIGHT
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF
SHOWERS.
THU
W WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI
NE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ533-102300-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
457 AM EDT MON AUG 10 2026
REST OF THE OVERNIGHT
W WINDS 5 KT. WAVES FLAT.
TODAY...W WINDS AROUND 5 KT
BECOMING S IN THE AFTERNOON. WAVES
1 FT OR LESS.
TONIGHT...SW WINDS 5 TO 10 KT
BECOMING NW LATE. WAVES 1 FT.
TUE
W WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
TUE NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
WED
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WED NIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS
AND TSTMS.
THU
W WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
NE WINDS 5 TO 10 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ541-102300-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
457 AM EDT MON AUG 10 2026
REST OF THE OVERNIGHT
W WINDS 5 KT. WAVES FLAT.
TODAY
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TONIGHT...SW WINDS 5 TO 10 KT
BECOMING NW LATE. WAVES 1 FT. A
CHANCE OF SHOWERS.
TUE
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
TUE NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
WED
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WED NIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF
SHOWERS.
THU
W WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
N WINDS 5 TO 10 KT. WAVES 1 FT.
ANZ542-102300-
PATUXENT RIVER TO BROOMES ISLAND MD-
457 AM EDT MON AUG 10 2026
REST OF THE OVERNIGHT
LIGHT WINDS. WAVES 1 FT.
TODAY
SW WINDS 5 TO 10 KT. WAVES 1 FT.
TONIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
NW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
TUE NIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS LIKELY.
WED
NW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
WED NIGHT
S WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS
AND TSTMS.
THU
W WINDS AROUND 5 KT. WAVES 1 FT.
FRI
N WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ534-102300-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
457 AM EDT MON AUG 10 2026
REST OF THE OVERNIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
SW WINDS 5 TO 10 KT. WAVES 1 FT.
TONIGHT...SW WINDS 10 KT
BECOMING NW LATE. WAVES 1 FT.
TUE
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
TUE NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
WED
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WED NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS
AND TSTMS.
THU...W WINDS 5 TO 10 KT
BECOMING S IN THE EVENING, THEN BECOMING
W AFTER MIDNIGHT. WAVES 1 FT.
FRI
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ543-102300-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
457 AM EDT MON AUG 10 2026
REST OF THE OVERNIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
SW WINDS 5 TO 10 KT. WAVES 1 FT.
TONIGHT...SW WINDS 10 TO 15 KT
BECOMING W 5 TO 10 KT AFTER
MIDNIGHT. WAVES 1 FT. A CHANCE OF SHOWERS.
TUE
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
TUE NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
WED
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WED NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS
AND TSTMS.
THU
W WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
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