840
FZUS51 KLWX 042358
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
758 PM 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.
ANZ500-050800-
758 PM EDT TUE AUG 4 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
A FRONTAL BOUNDARY STALLED OFF TO THE SOUTH WILL RETURN NORTHWARD
AS A WARM FRONT THIS EVENING INTO TONIGHT. 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.
ANZ535-050800-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
758 PM EDT TUE AUG 4 2026
TONIGHT
E WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS LIKELY WITH A
SLIGHT CHANCE OF TSTMS AFTER MIDNIGHT.
WED
SE WINDS AROUND 5 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS. PATCHY FOG. VSBY 1 NM OR LESS.
WED NIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS
AND TSTMS.
THU
SW WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
THU NIGHT
SW WINDS 5 TO 10 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.
FRI NIGHT
SW WINDS AROUND 5 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.
SUN
W WINDS AROUND 5 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ536-050800-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
758 PM EDT TUE AUG 4 2026
TONIGHT
E WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS
AND TSTMS THIS EVENING, THEN SHOWERS LIKELY WITH A SLIGHT CHANCE OF
TSTMS AFTER MIDNIGHT.
WED
SE WINDS AROUND 5 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS. PATCHY FOG. VSBY 1 NM OR LESS.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU
SW 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.
FRI NIGHT
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 THROUGH THE NIGHT. A CHANCE OF SHOWERS AFTER MIDNIGHT.
SUN
SW WINDS AROUND 5 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ537-050800-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
758 PM EDT TUE AUG 4 2026
TONIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS THIS EVENING, THEN SHOWERS LIKELY WITH A SLIGHT CHANCE OF
TSTMS AFTER MIDNIGHT.
WED
S 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.
THU
SW WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
SW WINDS 10 KT. WAVES 1 FT.
FRI
SW WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
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 THROUGH THE NIGHT. A CHANCE OF SHOWERS AFTER MIDNIGHT.
SUN
SW WINDS AROUND 5 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ530-050800-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
758 PM EDT TUE AUG 4 2026
TONIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
WED
SE WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS WITH A CHANCE OF
TSTMS. PATCHY FOG. VSBY 1 NM OR LESS.
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
SW WINDS 5 TO 10 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.
FRI NIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF
SHOWERS AND TSTMS.
SAT
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS AND
TSTMS THROUGH THE NIGHT.
SUN
W WINDS 5 KT. WAVES LESS THAN 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ531-050800-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
758 PM EDT TUE AUG 4 2026
TONIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT. A SLIGHT CHANCE OF
SHOWERS AND TSTMS AFTER MIDNIGHT.
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 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
THU NIGHT
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE EVENING.
WAVES 1 TO 2 FT. A CHANCE OF SHOWERS AND TSTMS.
FRI
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
FRI NIGHT
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 THROUGH THE NIGHT. A CHANCE OF SHOWERS AFTER MIDNIGHT.
SUN
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ538-050800-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
758 PM EDT TUE AUG 4 2026
TONIGHT
E WINDS 5 KT. WAVES LESS THAN 1 FT. A SLIGHT CHANCE OF
SHOWERS AND TSTMS AFTER MIDNIGHT.
WED
SE WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS. PATCHY FOG.
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. A CHANCE OF SHOWERS.
THU NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF
SHOWERS AND TSTMS.
FRI
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
FRI NIGHT
SW WINDS AROUND 5 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 THROUGH THE NIGHT. A CHANCE OF SHOWERS AFTER MIDNIGHT.
SUN
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ539-050800-
CHESTER RIVER TO QUEENSTOWN MD-
758 PM EDT TUE AUG 4 2026
TONIGHT
E WINDS 5 KT. WAVES LESS THAN 1 FT. A SLIGHT CHANCE OF
SHOWERS AND TSTMS AFTER MIDNIGHT.
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.
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. A CHANCE OF SHOWERS AND
TSTMS.
FRI NIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF
SHOWERS AND TSTMS.
SAT
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS AND
TSTMS THROUGH THE NIGHT. A CHANCE OF SHOWERS AFTER MIDNIGHT.
SUN
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ532-050800-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
758 PM EDT TUE AUG 4 2026
TONIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS WITH
A SLIGHT CHANCE OF TSTMS AFTER MIDNIGHT.
WED
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
WED NIGHT
S WINDS 10 KT. WAVES 1 TO 2 FT.
THU
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
THU NIGHT
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF
SHOWERS AND TSTMS.
FRI
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
FRI NIGHT
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.
SUN
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ540-050800-
EASTERN BAY-
758 PM EDT TUE AUG 4 2026
TONIGHT
E WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS
WITH A SLIGHT CHANCE OF TSTMS AFTER MIDNIGHT.
WED...SE WINDS 5 TO 10 KT
BECOMING S LATE. WAVES 1 FT OR LESS. A
CHANCE OF SHOWERS AND TSTMS.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
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.
FRI NIGHT
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 THROUGH THE NIGHT. A CHANCE OF SHOWERS AFTER MIDNIGHT.
SUN
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ533-050800-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
758 PM EDT TUE AUG 4 2026
TONIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A SLIGHT CHANCE OF
SHOWERS AND TSTMS THIS EVENING, THEN A CHANCE OF SHOWERS WITH A
SLIGHT CHANCE OF TSTMS AFTER MIDNIGHT.
WED
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WED NIGHT
S WINDS 10 KT. WAVES 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 1 TO
2 FT.
FRI
SW WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
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.
SUN
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ541-050800-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
758 PM EDT TUE AUG 4 2026
TONIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS WITH
A SLIGHT CHANCE OF TSTMS AFTER MIDNIGHT.
WED
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WED NIGHT
S WINDS 10 KT. WAVES 1 FT.
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.
FRI NIGHT
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.
SUN
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ542-050800-
PATUXENT RIVER TO BROOMES ISLAND MD-
758 PM EDT TUE AUG 4 2026
TONIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT. A SLIGHT CHANCE OF
TSTMS. A CHANCE OF SHOWERS THIS EVENING, THEN SHOWERS LIKELY AFTER
MIDNIGHT.
WED
SE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU
SW 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.
FRI NIGHT
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 THROUGH THE NIGHT. A CHANCE OF SHOWERS AFTER MIDNIGHT.
SUN
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ534-050800-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
758 PM EDT TUE AUG 4 2026
TONIGHT
SE WINDS 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS WITH A
SLIGHT CHANCE OF TSTMS THIS EVENING, THEN SHOWERS LIKELY WITH A
CHANCE OF TSTMS AFTER MIDNIGHT.
WED
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
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 FT.
FRI
SW WINDS 10 KT. WAVES 2 FT.
FRI NIGHT
SW WINDS 10 TO 15 KT. WAVES 2 FT. A CHANCE OF SHOWERS
AND TSTMS.
SAT
SW WINDS 10 KT. WAVES 2 FT. A CHANCE OF SHOWERS.
SUN
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ543-050800-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
758 PM EDT TUE AUG 4 2026
TONIGHT
SE WINDS 10 KT. WAVES 1 FT. A SLIGHT CHANCE OF SHOWERS
AND TSTMS THIS EVENING, THEN SHOWERS LIKELY WITH A SLIGHT CHANCE OF
TSTMS AFTER MIDNIGHT.
WED
S WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
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 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 WITH GUSTS TO 20 KT. WAVES 1 FT.
FRI NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A
CHANCE OF SHOWERS AND TSTMS.
SAT
SW WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF SHOWERS THROUGH
THE NIGHT.
SUN
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
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