843  
FZUS51 KLWX 230257  
CWFLWX  
 
COASTAL WATERS FORECAST  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1057 PM EDT WED JUL 22 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.  
 
ANZ500-230800-  
1057 PM EDT WED JUL 22 2026  
 
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...  
 
HIGH PRESSURE WILL BUILD IN FROM THE WEST FOR THE END OF THE WEEK.  
THE NEXT FRONTAL SYSTEM MAY APPROACH BY EARLY NEXT WEEK.  
 

 
 
ANZ535-230800-  
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-  
1057 PM EDT WED JUL 22 2026  
   
REST OF TONIGHT
 
N WINDS 5 TO 10 KT. WAVES 1 FT. SCATTERED SHOWERS  
AND TSTMS LATE THIS EVENING.    
THU
 
N WINDS 5 TO 10 KT. WAVES 1 FT.    
THU NIGHT
 
NE WINDS AROUND 5 KT. WAVES 1 FT OR LESS.    
FRI
 
E WINDS AROUND 5 KT. WAVES 1 FT.    
FRI NIGHT
 
E WINDS AROUND 5 KT. WAVES 1 FT OR LESS.    
SAT
 
E WINDS AROUND 5 KT. WAVES 1 FT.    
SAT NIGHT
 
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS.    
SUN
 
S WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND  
TSTMS THROUGH THE NIGHT.    
MON
 
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.  
 

 
 
ANZ536-230800-  
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-  
1057 PM EDT WED JUL 22 2026  
   
REST OF TONIGHT
 
N WINDS 10 KT. WAVES 1 FT. SHOWERS AND SCATTERED  
TSTMS LATE THIS EVENING, THEN SCATTERED SHOWERS WITH ISOLATED TSTMS.   
THU
 
N WINDS 5 TO 10 KT. WAVES 1 FT.    
THU NIGHT
 
NE WINDS AROUND 5 KT. WAVES 1 FT OR LESS.    
FRI
 
E WINDS AROUND 5 KT. WAVES 1 FT.    
FRI NIGHT
 
E WINDS AROUND 5 KT. WAVES 1 FT.    
SAT
 
E WINDS AROUND 5 KT. WAVES 1 FT.    
SAT NIGHT
 
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS.    
SUN
 
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS  
AND TSTMS THROUGH THE NIGHT.    
MON
 
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.  
 

 
 
ANZ537-230800-  
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-  
1057 PM EDT WED JUL 22 2026  
   
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING
 
 
   
REST OF TONIGHT...W WINDS 10 KT
 
BECOMING N. GUSTS UP TO 20 KT.  
WAVES 1 TO 2 FT. SHOWERS. NUMEROUS TSTMS LATE THIS EVENING, THEN  
SCATTERED TSTMS. PATCHY FOG LATE THIS EVENING. PATCHY FOG. VSBY 1 NM  
OR LESS.    
THU
 
N WINDS 10 TO 15 KT. GUSTS UP TO 20 KT UNTIL LATE AFTERNOON.  
WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.    
THU NIGHT
 
NE WINDS 5 KT. WAVES LESS THAN 1 FT.    
FRI
 
E WINDS 5 TO 10 KT. WAVES 1 FT.    
FRI NIGHT
 
E WINDS 5 TO 10 KT. WAVES 1 FT.    
SAT
 
NE WINDS 5 TO 10 KT. WAVES 1 FT.    
SAT NIGHT
 
SE WINDS AROUND 5 KT. WAVES 1 FT.    
SUN
 
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS  
AND TSTMS THROUGH THE NIGHT.    
MON
 
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND  
TSTMS THROUGH THE NIGHT.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 

 
 
ANZ530-230800-  
CHESAPEAKE BAY NORTH OF POOLES ISLAND-  
1057 PM EDT WED JUL 22 2026  
   
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT THURSDAY
 
 
   
REST OF TONIGHT
 
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES  
1 FT.    
THU
 
N WINDS 5 TO 10 KT. WAVES 1 FT.    
THU NIGHT
 
E WINDS AROUND 5 KT. WAVES FLAT.    
FRI
 
E WINDS AROUND 5 KT. WAVES FLAT.    
FRI NIGHT
 
E WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.    
SAT
 
E WINDS AROUND 5 KT. WAVES FLAT.    
SAT NIGHT
 
SE WINDS AROUND 5 KT. WAVES FLAT.    
SUN
 
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS.   
MON
 
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS  
AND TSTMS.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 

 
 
ANZ531-230800-  
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-  
1057 PM EDT WED JUL 22 2026  
   
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT THURSDAY
 
 
   
REST OF TONIGHT
 
N WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO  
2 FT.    
THU...N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
 
BECOMING NE 5 KT  
LATE. WAVES 1 TO 2 FT.    
THU NIGHT
 
E WINDS AROUND 5 KT. WAVES FLAT.    
FRI
 
E WINDS AROUND 5 KT. WAVES 1 FT.    
FRI NIGHT
 
E WINDS 5 TO 10 KT. WAVES 1 FT.    
SAT
 
E WINDS 5 KT. WAVES LESS THAN 1 FT.    
SAT NIGHT
 
S WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN
 
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS  
THROUGH THE NIGHT.    
MON
 
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.  
 

 
 
ANZ538-230800-  
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-  
1057 PM EDT WED JUL 22 2026  
   
REST OF TONIGHT
 
N WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.    
THU
 
NE WINDS 5 TO 10 KT. WAVES 1 FT.    
THU NIGHT
 
E WINDS AROUND 5 KT. WAVES FLAT.    
FRI
 
E WINDS AROUND 5 KT. WAVES 1 FT OR LESS.    
FRI NIGHT
 
E WINDS 5 TO 10 KT. WAVES 1 FT.    
SAT
 
E WINDS 5 KT. WAVES FLAT.    
SAT NIGHT
 
S WINDS AROUND 5 KT. WAVES FLAT.    
SUN
 
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS.   
MON
 
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS  
AND TSTMS.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 

 
 
ANZ539-230800-  
CHESTER RIVER TO QUEENSTOWN MD-  
1057 PM EDT WED JUL 22 2026  
   
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT THURSDAY
 
 
   
REST OF TONIGHT
 
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES  
1 TO 2 FT. ISOLATED SHOWERS AND TSTMS LATE THIS EVENING, THEN  
ISOLATED SHOWERS.    
THU
 
N WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.    
THU NIGHT
 
E WINDS AROUND 5 KT. WAVES FLAT.    
FRI
 
E WINDS AROUND 5 KT. WAVES 1 FT OR LESS.    
FRI NIGHT
 
E WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.    
SAT
 
E WINDS AROUND 5 KT. WAVES FLAT.    
SAT NIGHT
 
SE WINDS AROUND 5 KT. WAVES FLAT.    
SUN
 
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS  
THROUGH THE NIGHT.    
MON
 
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.  
 

 
 
ANZ532-230800-  
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-  
1057 PM EDT WED JUL 22 2026  
   
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT THURSDAY
 
 
   
REST OF TONIGHT
 
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES  
1 TO 2 FT. NUMEROUS SHOWERS AND SCATTERED TSTMS LATE THIS EVENING,  
THEN SCATTERED SHOWERS WITH ISOLATED TSTMS.    
THU...N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
 
BECOMING NE 5 KT  
LATE. WAVES 1 TO 2 FT.    
THU NIGHT
 
E WINDS AROUND 5 KT. WAVES 1 FT OR LESS.    
FRI
 
E WINDS 5 TO 10 KT. WAVES 1 FT.    
FRI NIGHT
 
E WINDS 5 TO 10 KT. WAVES 1 FT.    
SAT
 
NE WINDS 5 KT. WAVES LESS THAN 1 FT.    
SAT NIGHT
 
SE WINDS AROUND 5 KT. WAVES 1 FT.    
SUN
 
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS  
THROUGH THE NIGHT.    
MON
 
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS. A  
CHANCE OF TSTMS THROUGH THE NIGHT.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 

 
 
ANZ540-230800-  
EASTERN BAY-  
1057 PM EDT WED JUL 22 2026  
   
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT THURSDAY
 
 
   
REST OF TONIGHT
 
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES  
1 TO 2 FT. SCATTERED SHOWERS. SCATTERED TSTMS LATE THIS EVENING,  
THEN ISOLATED TSTMS.    
THU...N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
 
DIMINISHING TO  
5 KT LATE. WAVES 1 FT.    
THU NIGHT
 
E WINDS AROUND 5 KT. WAVES FLAT.    
FRI
 
E WINDS AROUND 5 KT. WAVES 1 FT.    
FRI NIGHT
 
E WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.    
SAT
 
NE WINDS 5 KT. WAVES LESS THAN 1 FT.    
SAT NIGHT
 
SE WINDS AROUND 5 KT. WAVES FLAT.    
SUN
 
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS  
THROUGH THE NIGHT.    
MON
 
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS. A  
CHANCE OF TSTMS THROUGH THE NIGHT.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 

 
 
ANZ533-230800-  
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-  
1057 PM EDT WED JUL 22 2026  
   
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING
 
 
   
REST OF TONIGHT...W WINDS 10 KT
 
BECOMING N 15 TO 20 KT. WAVES  
1 TO 2 FT...BUILDING TO 3 FT LATE. SHOWERS. SCATTERED TSTMS LATE  
THIS EVENING, THEN ISOLATED TSTMS.    
THU
 
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 TO 3 FT.    
THU NIGHT
 
E WINDS 5 KT. WAVES LESS THAN 1 FT.    
FRI
 
E WINDS 5 TO 10 KT. WAVES 1 FT.    
FRI NIGHT
 
E WINDS 5 TO 10 KT. WAVES 1 FT.    
SAT
 
NE WINDS AROUND 5 KT. WAVES 1 FT.    
SAT NIGHT
 
SE WINDS AROUND 5 KT. WAVES 1 FT.    
SUN...SE WINDS 5 TO 10 KT
 
BECOMING SW AFTER MIDNIGHT. WAVES 1 FT  
OR LESS. A CHANCE OF SHOWERS THROUGH THE NIGHT.   
MON
 
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS. A  
CHANCE OF TSTMS THROUGH THE NIGHT.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 

 
 
ANZ541-230800-  
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-  
1057 PM EDT WED JUL 22 2026  
   
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING
 
 
   
REST OF TONIGHT...NW WINDS 10 TO 15 KT
 
BECOMING N LATE. GUSTS UP  
TO 20 KT. WAVES 1 TO 2 FT. SHOWERS AND SCATTERED TSTMS.    
THU...N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
 
DIMINISHING TO  
5 KT LATE. WAVES 1 TO 2 FT.    
THU NIGHT
 
E WINDS 5 KT. WAVES LESS THAN 1 FT.    
FRI
 
E WINDS 5 TO 10 KT. WAVES 1 FT.    
FRI NIGHT
 
E WINDS 5 TO 10 KT. WAVES 1 FT.    
SAT
 
NE WINDS AROUND 5 KT. WAVES 1 FT.    
SAT NIGHT
 
SE WINDS AROUND 5 KT. WAVES 1 FT OR LESS.    
SUN
 
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.    
MON
 
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS. A  
CHANCE OF TSTMS THROUGH THE NIGHT.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 

 
 
ANZ542-230800-  
PATUXENT RIVER TO BROOMES ISLAND MD-  
1057 PM EDT WED JUL 22 2026  
   
REST OF TONIGHT
 
N WINDS 5 TO 10 KT. GUSTS UP TO 20 KT. WAVES  
1 FT. SHOWERS AND SCATTERED TSTMS.    
THU
 
N WINDS 5 TO 10 KT. WAVES 1 FT.    
THU NIGHT
 
NE WINDS AROUND 5 KT. WAVES 1 FT.    
FRI
 
E WINDS 5 TO 10 KT. WAVES 1 FT.    
FRI NIGHT
 
E WINDS 5 TO 10 KT. WAVES 1 FT.    
SAT
 
NE WINDS AROUND 5 KT. WAVES 1 FT.    
SAT NIGHT
 
SE WINDS AROUND 5 KT. WAVES 1 FT.    
SUN
 
SE WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS THROUGH  
THE NIGHT.    
MON
 
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS. A  
CHANCE OF TSTMS THROUGH THE NIGHT.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 

 
 
ANZ534-230800-  
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-  
1057 PM EDT WED JUL 22 2026  
   
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING
 
 
   
REST OF TONIGHT...W WINDS 15 KT
 
BECOMING N. GUSTS UP TO 20 KT.  
WAVES 1 TO 2 FT. SHOWERS. NUMEROUS TSTMS LATE THIS EVENING, THEN  
SCATTERED TSTMS. PATCHY FOG. VSBY 1 NM OR LESS.    
THU
 
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 TO 3 FT. A  
CHANCE OF SHOWERS.    
THU NIGHT
 
NE WINDS 5 TO 10 KT. WAVES 1 FT.    
FRI
 
E WINDS 5 TO 10 KT. WAVES 1 FT.    
FRI NIGHT
 
E WINDS 5 TO 10 KT. WAVES 1 FT.    
SAT
 
NE WINDS 5 TO 10 KT. WAVES 1 FT.    
SAT NIGHT
 
E WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN...E WINDS 5 KT
 
BECOMING S. WAVES 1 FT OR LESS. A CHANCE OF  
SHOWERS THROUGH THE NIGHT.    
MON
 
SW WINDS 5 TO 10 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS AND  
TSTMS THROUGH THE NIGHT.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 

 
 
ANZ543-230800-  
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-  
1057 PM EDT WED JUL 22 2026  
   
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING
 
 
   
REST OF TONIGHT...W WINDS 15 KT
 
BECOMING N. GUSTS UP TO 20 KT.  
WAVES 1 FT. SHOWERS AND NUMEROUS TSTMS LATE THIS EVENING, THEN  
SHOWERS AND SCATTERED TSTMS. PATCHY FOG. VSBY 1 NM OR LESS.    
THU
 
N WINDS 10 TO 15 KT. GUSTS UP TO 20 KT UNTIL LATE AFTERNOON.  
WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.    
THU NIGHT
 
E WINDS 5 TO 10 KT. WAVES 1 FT.    
FRI
 
NE WINDS 5 TO 10 KT. WAVES 1 FT.    
FRI NIGHT
 
NE WINDS 5 TO 10 KT. WAVES 1 FT.    
SAT
 
NE WINDS 5 TO 10 KT. WAVES 1 FT.    
SAT NIGHT
 
E WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.    
SUN...SE WINDS 5 KT
 
BECOMING S. WAVES 1 FT OR LESS. A CHANCE OF  
SHOWERS THROUGH THE NIGHT.    
MON
 
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS IN THE  
MORNING. A CHANCE OF SHOWERS AND TSTMS THROUGH THE NIGHT.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 

 
 
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