138
FZUS51 KLWX 041457
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1057 AM EDT TUE AUG 4 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.
ANZ500-042000-
1057 AM EDT TUE AUG 4 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
A FRONTAL BOUNDARY STALLS JUST TO OUR SOUTH TODAY, WITH MOSTLY DRY
CONDITIONS. DAILY SHOWER AND THUNDERSTORM CHANCES RETURN TO THE
FORECAST WEDNESDAY, WITH GUSTY WINDS POSSIBLE IN THE STRONGEST
THUNDERSTORMS ESPECIALLY LATER THIS WEEK. ADDITIONAL SMALL CRAFT
ADVISORIES MAY BE NEEDED AT TIMES LATE THIS WEEK DUE TO PERIODS OF
SOUTHERLY CHANNELING.
ANZ535-042000-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
1057 AM EDT TUE AUG 4 2026
REST OF TODAY
E WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
E WINDS AROUND 5 KT. WAVES 1 FT OR LESS. SHOWERS LIKELY.
WED
SE WINDS AROUND 5 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
WED NIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS
AND TSTMS.
THU
S WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
THU NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
SAT
SW WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ536-042000-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
1057 AM EDT TUE AUG 4 2026
REST OF TODAY
NE WINDS 5 TO 10 KT. WAVES 1 FT. A SLIGHT CHANCE OF
SHOWERS AND TSTMS THIS AFTERNOON.
TONIGHT
E WINDS AROUND 5 KT. WAVES 1 FT. SHOWERS LIKELY.
WED
SE WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
THU
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS THROUGH THE NIGHT.
SAT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS THROUGH THE NIGHT. A CHANCE OF SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ537-042000-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
1057 AM EDT TUE AUG 4 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 AM EDT THIS MORNING
REST OF TODAY
E WINDS 10 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS
AND TSTMS THIS AFTERNOON.
TONIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
WED
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A CHANCE
OF TSTMS.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
THU NIGHT
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
FRI
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS THROUGH THE NIGHT.
SAT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS THROUGH THE NIGHT. A CHANCE OF SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ530-042000-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
1057 AM EDT TUE AUG 4 2026
REST OF TODAY
E WINDS 5 TO 10 KT. WAVES 1 FT.
TONIGHT
E WINDS AROUND 5 KT. WAVES 1 FT.
WED
SE WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
THU
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
THU NIGHT
S WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A
CHANCE OF SHOWERS AND TSTMS.
FRI
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
SAT
SW WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS THROUGH THE NIGHT. A CHANCE OF SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ531-042000-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
1057 AM EDT TUE AUG 4 2026
REST OF TODAY
NE WINDS 5 TO 10 KT. WAVES 1 FT.
TONIGHT
E WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
WED
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
THU
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
THU NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT.
FRI
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
SAT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ538-042000-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
1057 AM EDT TUE AUG 4 2026
REST OF TODAY
NE WINDS 5 TO 10 KT. WAVES 1 FT.
TONIGHT
E WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
WED
SE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A CHANCE
OF TSTMS.
WED NIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS
AND TSTMS.
THU
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
FRI
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
AND TSTMS.
SAT
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
AND TSTMS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ539-042000-
CHESTER RIVER TO QUEENSTOWN MD-
1057 AM EDT TUE AUG 4 2026
REST OF TODAY
NE WINDS 5 TO 10 KT. WAVES 1 FT.
TONIGHT
E WINDS 5 KT. WAVES FLAT. A CHANCE OF SHOWERS.
WED
SE WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
THU
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
SAT
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ532-042000-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
1057 AM EDT TUE AUG 4 2026
REST OF TODAY
NE WINDS 10 KT. WAVES 1 FT.
TONIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WED
SE WINDS 5 TO 10 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS AND
TSTMS.
WED NIGHT
S WINDS 10 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS AND
TSTMS.
THU
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
THU NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
FRI
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
SAT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ540-042000-
EASTERN BAY-
1057 AM EDT TUE AUG 4 2026
REST OF TODAY
NE WINDS 5 TO 10 KT. WAVES 1 FT.
TONIGHT
E WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
WED
SE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A CHANCE
OF TSTMS.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
THU
S WINDS 10 KT. WAVES 1 FT.
THU NIGHT
S WINDS 10 KT. WAVES 1 FT.
FRI
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
SAT
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ533-042000-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
1057 AM EDT TUE AUG 4 2026
REST OF TODAY
NE WINDS 10 KT. WAVES 1 TO 2 FT.
TONIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
WED
SE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
SHOWERS LIKELY WITH A CHANCE OF TSTMS.
WED NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT.
THU
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
THU NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
FRI
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
SAT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ541-042000-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
1057 AM EDT TUE AUG 4 2026
REST OF TODAY
NE WINDS 5 TO 10 KT. WAVES 1 FT.
TONIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WED
SE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A CHANCE
OF TSTMS.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
THU NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
FRI
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS THROUGH THE NIGHT.
SAT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ542-042000-
PATUXENT RIVER TO BROOMES ISLAND MD-
1057 AM EDT TUE AUG 4 2026
REST OF TODAY
NE WINDS 5 KT. WAVES LESS THAN 1 FT. A SLIGHT
CHANCE OF SHOWERS AND TSTMS THIS AFTERNOON.
TONIGHT
E WINDS AROUND 5 KT. WAVES 1 FT. SHOWERS LIKELY.
WED
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A CHANCE
OF TSTMS.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU
S WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON. WAVES
1 FT.
THU NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS THROUGH THE NIGHT.
SAT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS THROUGH THE NIGHT. A CHANCE OF SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ534-042000-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
1057 AM EDT TUE AUG 4 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 AM EDT THIS MORNING
REST OF TODAY
NE WINDS 10 KT. WAVES 1 TO 2 FT. A CHANCE OF
SHOWERS WITH A SLIGHT CHANCE OF TSTMS THIS AFTERNOON.
TONIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
WED
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE LATE MORNING
AND AFTERNOON. WAVES 1 TO 2 FT. SHOWERS LIKELY WITH A CHANCE OF
TSTMS.
WED NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
THU
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
THU NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 TO
3 FT.
FRI
SW WINDS 10 TO 15 KT. WAVES 2 FT. A CHANCE OF SHOWERS AND
TSTMS THROUGH THE NIGHT.
SAT
SW WINDS 10 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS AND
TSTMS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ543-042000-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
1057 AM EDT TUE AUG 4 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 AM EDT THIS MORNING
REST OF TODAY
E WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS
WITH A SLIGHT CHANCE OF TSTMS THIS AFTERNOON.
TONIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
WED
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE LATE MORNING
AND AFTERNOON. WAVES 1 FT. A CHANCE OF SHOWERS.
WED NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
THU
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
THU NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
FRI
SW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS
AND TSTMS THROUGH THE NIGHT.
SAT
SW WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
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