305  
FZUS51 KLWX 120301  
CWFLWX  
 
COASTAL WATERS FORECAST  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1100 PM EDT MON MAY 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-  
1100 PM EDT MON MAY 11 2026  
 
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...  
 
AN EARLIER COLD FRONT WILL CONTINUE TO PULL WELL SOUTH OF THE AREA  
TODAY AS WAVES OF LOW PRESSURE TRACK NEAR THE OUTER BANKS. HIGH  
PRESSURE WILL BUILD IN FROM THE WEST ON TUESDAY BEFORE ANOTHER  
FRONTAL SYSTEM APPROACHES WEDNESDAY INTO WEDNESDAY NIGHT. HIGH  
PRESSURE WILL RETURN FRIDAY. SMALL CRAFT ADVISORIES MAY BE NEEDED AT  
TIMES TONIGHT THROUGH TUESDAY MORNING AND AGAIN TUESDAY NIGHT  
THROUGH FRIDAY.  
 

 
 
ANZ535-120800-  
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-  
1100 PM EDT MON MAY 11 2026  
   
REST OF TONIGHT
 
W WINDS 5 KT. WAVES LESS THAN 1 FT.    
TUE
 
NW WINDS AROUND 5 KT. WAVES 1 FT.    
TUE NIGHT
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.    
WED
 
S WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT. SHOWERS  
LIKELY.    
WED NIGHT
 
SW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE EVENING.  
WAVES 1 FT. SHOWERS.   
THU
 
NW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT.    
THU NIGHT
 
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.    
FRI...NW WINDS 10 TO 15 KT
 
BECOMING W AROUND 5 KT AFTER MIDNIGHT.  
WAVES 1 FT.    
SAT
 
SW WINDS 5 TO 10 KT. WAVES 1 FT.  
 

 
 
ANZ536-120800-  
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-  
1100 PM EDT MON MAY 11 2026  
   
REST OF TONIGHT
 
W WINDS 5 KT. WAVES LESS THAN 1 FT.    
TUE
 
E WINDS AROUND 5 KT. WAVES 1 FT.    
TUE NIGHT
 
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE LATE  
EVENING AND OVERNIGHT. WAVES 1 FT.    
WED
 
SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT. A  
CHANCE OF SHOWERS.    
WED NIGHT...S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
 
BECOMING SW  
5 TO 10 KT AFTER MIDNIGHT. WAVES 1 FT. SHOWERS.   
THU
 
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.    
THU NIGHT
 
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.    
FRI...NW WINDS 10 TO 15 KT
 
BECOMING W AROUND 5 KT AFTER MIDNIGHT.  
WAVES 1 FT.    
SAT
 
SW WINDS 5 TO 10 KT. WAVES 1 FT.  
 

 
 
ANZ537-120800-  
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-  
1100 PM EDT MON MAY 11 2026  
   
REST OF TONIGHT...W WINDS 5 KT
 
BECOMING NW LATE. WAVES 1 FT OR  
LESS.    
TUE...N WINDS 5 TO 10 KT
 
BECOMING SE LATE. WAVES 1 FT.    
TUE NIGHT...SE WINDS 10 TO 15 KT
 
BECOMING S LATE. GUSTS UP TO  
20 KT. WAVES 1 TO 2 FT.    
WED
 
S WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A CHANCE OF  
SHOWERS.    
WED NIGHT
 
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.  
SHOWERS.   
THU
 
NW WINDS 10 TO 15 KT. WAVES 1 FT.    
THU NIGHT
 
NW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.    
FRI...NW WINDS 10 TO 15 KT
 
BECOMING W 5 KT AFTER MIDNIGHT. WAVES  
1 TO 2 FT...SUBSIDING TO FLAT AFTER MIDNIGHT.    
SAT
 
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.  
 

 
 
ANZ530-120800-  
CHESAPEAKE BAY NORTH OF POOLES ISLAND-  
1100 PM EDT MON MAY 11 2026  
   
REST OF TONIGHT...NW WINDS 5 TO 10 KT
 
BECOMING N LATE. WAVES 1 FT  
OR LESS.    
TUE...N WINDS 5 TO 10 KT
 
BECOMING SW LATE. WAVES 1 FT.    
TUE NIGHT
 
S WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT.    
WED
 
S WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 FT. SHOWERS  
LIKELY.    
WED NIGHT
 
SW WINDS 10 TO 15 KT. GUSTS UP TO 25 KT IN THE EVENING.  
WAVES 1 TO 2 FT. SHOWERS.   
THU
 
NW WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.    
THU NIGHT
 
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.    
FRI...NW WINDS 10 TO 15 KT
 
BECOMING W AROUND 5 KT AFTER MIDNIGHT.  
WAVES 1 FT.    
SAT
 
SW WINDS 5 TO 10 KT. WAVES 1 FT.  
 

 
 
ANZ531-120800-  
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-  
1100 PM EDT MON MAY 11 2026  
   
REST OF TONIGHT...NW WINDS 5 TO 10 KT
 
BECOMING N LATE. WAVES  
1 FT.    
TUE...NE WINDS 5 TO 10 KT
 
BECOMING S LATE. WAVES 1 FT.    
TUE NIGHT...S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 1 FT
 
 
BUILDING TO 3 FT AFTER MIDNIGHT.    
WED
 
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT. SHOWERS  
LIKELY.    
WED NIGHT...S WINDS 10 TO 15 KT WITH GUSTS TO 25 KT
 
BECOMING SW  
5 TO 10 KT AFTER MIDNIGHT. WAVES 2 FT. SHOWERS.   
THU
 
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.    
THU NIGHT
 
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.    
FRI...NW WINDS 10 TO 15 KT
 
BECOMING W 5 KT AFTER MIDNIGHT. WAVES  
1 TO 2 FT.    
SAT
 
SW WINDS 5 TO 10 KT. WAVES 1 FT.  
 

 
 
ANZ538-120800-  
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-  
1100 PM EDT MON MAY 11 2026  
   
REST OF TONIGHT
 
NW WINDS 5 KT. WAVES LESS THAN 1 FT.    
TUE
 
NE WINDS AROUND 5 KT. WAVES 1 FT.    
TUE NIGHT
 
S WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE LATE  
EVENING AND OVERNIGHT. WAVES 1 FT.    
WED
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. SHOWERS  
LIKELY.    
WED NIGHT...S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
 
BECOMING SW  
5 KT AFTER MIDNIGHT. WAVES 1 FT. SHOWERS.   
THU
 
NW WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.    
THU NIGHT
 
NW WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.    
FRI
 
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.    
SAT
 
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.  
 

 
 
ANZ539-120800-  
CHESTER RIVER TO QUEENSTOWN MD-  
1100 PM EDT MON MAY 11 2026  
   
REST OF TONIGHT...W WINDS 5 TO 10 KT
 
BECOMING N LATE. WAVES 1 FT  
OR LESS.    
TUE...N WINDS 5 TO 10 KT
 
BECOMING S LATE. WAVES 1 FT OR LESS.    
TUE NIGHT
 
S WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 TO  
2 FT.    
WED
 
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT. SHOWERS  
LIKELY.    
WED NIGHT
 
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO  
2 FT. SHOWERS.   
THU
 
NW WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.    
THU NIGHT
 
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.    
FRI...NW WINDS 10 TO 15 KT
 
BECOMING W 5 KT AFTER MIDNIGHT. WAVES  
1 TO 2 FT.    
SAT
 
SW WINDS 5 TO 10 KT. WAVES 1 FT.  
 

 
 
ANZ532-120800-  
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-  
1100 PM EDT MON MAY 11 2026  
   
REST OF TONIGHT...W WINDS 5 TO 10 KT
 
BECOMING N LATE. WAVES 1 FT.   
TUE...NE WINDS 5 TO 10 KT
 
BECOMING SE LATE. WAVES 1 FT.    
TUE NIGHT
 
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO  
3 FT.    
WED
 
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT. A CHANCE  
OF SHOWERS.    
WED NIGHT...S WINDS 15 TO 20 KT
 
BECOMING SW 10 TO 15 KT AFTER  
MIDNIGHT. WAVES 2 TO 3 FT. SHOWERS.   
THU
 
NW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.    
THU NIGHT
 
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.    
FRI...NW WINDS 10 TO 15 KT
 
BECOMING W 5 KT AFTER MIDNIGHT. WAVES  
1 TO 2 FT.    
SAT
 
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.  
 

 
 
ANZ540-120800-  
EASTERN BAY-  
1100 PM EDT MON MAY 11 2026  
   
REST OF TONIGHT...W WINDS 5 TO 10 KT
 
BECOMING N LATE. WAVES 1 FT  
OR LESS.    
TUE...N WINDS 5 TO 10 KT
 
BECOMING S LATE. WAVES 1 FT OR LESS.    
TUE NIGHT
 
S WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 TO  
2 FT.    
WED
 
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT. A CHANCE  
OF SHOWERS.    
WED NIGHT
 
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO  
2 FT. SHOWERS.   
THU
 
NW WINDS 5 TO 10 KT. WAVES 1 FT.    
THU NIGHT
 
NW WINDS 10 TO 15 KT. WAVES 1 FT.    
FRI...NW WINDS 10 TO 15 KT
 
BECOMING W 5 KT AFTER MIDNIGHT. WAVES  
1 TO 2 FT...SUBSIDING TO FLAT AFTER MIDNIGHT.    
SAT
 
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.  
 

 
 
ANZ533-120800-  
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-  
1100 PM EDT MON MAY 11 2026  
   
REST OF TONIGHT...W WINDS 5 TO 10 KT
 
BECOMING N LATE. WAVES 1 FT  
OR LESS.    
TUE...N WINDS 5 TO 10 KT
 
BECOMING SE LATE. WAVES 1 FT.    
TUE NIGHT
 
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO  
3 FT.    
WED
 
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT. A CHANCE  
OF SHOWERS.    
WED NIGHT...S WINDS 15 TO 20 KT
 
BECOMING SW 10 TO 15 KT AFTER  
MIDNIGHT. GUSTS UP TO 25 KT. WAVES 2 TO 3 FT. SHOWERS.   
THU
 
NW WINDS 10 TO 15 KT. WAVES 2 FT.    
THU NIGHT
 
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.    
FRI...NW WINDS 10 TO 15 KT
 
BECOMING W 5 KT AFTER MIDNIGHT. WAVES  
1 TO 2 FT.    
SAT
 
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.  
 

 
 
ANZ541-120800-  
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-  
1100 PM EDT MON MAY 11 2026  
   
REST OF TONIGHT...W WINDS 5 TO 10 KT
 
BECOMING N LATE. WAVES 1 FT  
OR LESS.    
TUE...N WINDS 5 TO 10 KT
 
BECOMING SW LATE. WAVES 1 FT.    
TUE NIGHT
 
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 1 TO  
2 FT.    
WED
 
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT. A CHANCE  
OF SHOWERS.    
WED NIGHT
 
S WINDS 15 TO 20 KT. WAVES 2 FT. SHOWERS.   
THU
 
NW WINDS 10 TO 15 KT. WAVES 1 FT.    
THU NIGHT
 
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.    
FRI...NW WINDS 10 TO 15 KT
 
BECOMING W 5 KT. WAVES 1 TO 2 FT.    
SAT
 
SW WINDS 5 TO 10 KT. WAVES 1 FT.  
 

 
 
ANZ542-120800-  
PATUXENT RIVER TO BROOMES ISLAND MD-  
1100 PM EDT MON MAY 11 2026  
   
REST OF TONIGHT
 
W WINDS 5 KT. WAVES LESS THAN 1 FT.    
TUE...N WINDS 5 TO 10 KT
 
BECOMING SE LATE. WAVES 1 FT.    
TUE NIGHT
 
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE LATE  
EVENING AND OVERNIGHT. WAVES 1 FT.    
WED
 
S WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT. A CHANCE  
OF SHOWERS.    
WED NIGHT
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.  
SHOWERS.   
THU
 
NW WINDS 5 TO 10 KT. WAVES 1 FT.    
THU NIGHT
 
NW WINDS 5 TO 10 KT. WAVES 1 FT.    
FRI
 
W WINDS 5 TO 10 KT. WAVES 1 FT.    
SAT
 
SW WINDS 5 TO 10 KT. WAVES 1 FT.  
 

 
 
ANZ534-120800-  
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-  
1100 PM EDT MON MAY 11 2026  
   
REST OF TONIGHT
 
W WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.    
TUE...N WINDS 5 TO 10 KT
 
BECOMING E LATE. WAVES 1 FT.    
TUE NIGHT
 
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO  
3 FT.    
WED
 
S WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 3 FT. A CHANCE  
OF SHOWERS.    
WED NIGHT
 
S WINDS 20 TO 25 KT. GUSTS UP TO 30 KT IN THE EVENING.  
WAVES 3 FT. SHOWERS.   
THU
 
NW WINDS 10 TO 15 KT. WAVES 2 FT.    
THU NIGHT
 
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.    
FRI...NW WINDS 10 TO 15 KT
 
BECOMING W 5 TO 10 KT. WAVES 1 TO  
2 FT.    
SAT
 
SW WINDS 5 TO 10 KT. WAVES 1 FT.  
 

 
 
ANZ543-120800-  
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-  
1100 PM EDT MON MAY 11 2026  
   
REST OF TONIGHT
 
W WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.    
TUE...N WINDS 5 TO 10 KT
 
BECOMING W LATE. WAVES 1 FT.    
TUE NIGHT
 
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 1 TO  
2 FT.    
WED
 
S WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 TO 3 FT. A  
CHANCE OF SHOWERS.    
WED NIGHT
 
S WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 TO  
3 FT. SHOWERS.   
THU
 
NW WINDS 10 TO 15 KT. WAVES 1 FT.    
THU NIGHT
 
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.    
FRI...NW WINDS 10 TO 15 KT
 
BECOMING W 5 TO 10 KT. WAVES 1 TO  
2 FT.    
SAT
 
SW WINDS 5 TO 10 KT. WAVES 1 FT.  
 

 
 
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