209  
FZUS51 KLWX 042100  
CWFLWX  
 
COASTAL WATERS FORECAST  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
500 PM EDT SAT APR 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-  
500 PM EDT SAT APR 4 2026  
 
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...  
 
A STRONG COLD FRONT WILL MOVE OVER THE WATERS ON SUNDAY. SMALL CRAFT  
ADVISORIES MAY BE NEEDED SUNDAY AFTERNOON INTO SUNDAY NIGHT, AND  
THEN POTENTIALLY AGAIN ON TUESDAY.  
 
 
 
ANZ535-050800-  
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-  
500 PM EDT SAT APR 4 2026  
   
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON  
 
   
REST OF THIS AFTERNOON  
S WINDS 10 KT. WAVES 1 FT.    
TONIGHT...S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT  
INCREASING TO  
25 KT LATE. WAVES 1 TO 2 FT.    
SUN...SW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT  
BECOMING W WITH  
GUSTS TO 20 KT IN THE AFTERNOON. WAVES 1 TO 2 FT. SHOWERS.   
SUN NIGHT  
NW WINDS 5 TO 10 KT. WAVES 1 FT.    
MON  
NW WINDS 5 TO 10 KT. WAVES 1 FT.    
MON NIGHT  
NW WINDS 5 TO 10 KT. WAVES 1 FT.    
TUE...NW WINDS 10 TO 15 KT  
BECOMING N 5 KT AFTER MIDNIGHT. WAVES  
1 FT.    
WED  
SE WINDS AROUND 5 KT. WAVES 1 FT.  
 
 
 
ANZ536-050800-  
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-  
500 PM EDT SAT APR 4 2026  
   
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON  
 
   
REST OF THIS AFTERNOON  
S WINDS 10 KT. WAVES 1 FT.    
TONIGHT  
S WINDS 15 TO 20 KT. GUSTS UP TO 25 KT LATE. WAVES 1 TO  
2 FT.    
SUN...SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT  
BECOMING W 5 TO  
10 KT LATE. WAVES 1 TO 2 FT. SHOWERS.   
SUN NIGHT  
NW WINDS 10 TO 15 KT. WAVES 1 FT.    
MON  
NW WINDS 5 TO 10 KT. WAVES 1 FT.    
MON NIGHT  
NW WINDS 5 TO 10 KT. WAVES 1 FT.    
TUE...NW WINDS 10 TO 15 KT  
BECOMING N 5 TO 10 KT AFTER MIDNIGHT.  
WAVES 1 FT.    
WED...E WINDS 5 TO 10 KT  
BECOMING SE AFTER MIDNIGHT. WAVES 1 FT.  
 
 
 
ANZ537-050800-  
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-  
500 PM EDT SAT APR 4 2026  
   
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON  
 
   
REST OF THIS AFTERNOON  
S WINDS 10 KT. WAVES 1 FT.    
TONIGHT  
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.    
SUN...SW WINDS 15 TO 20 KT  
BECOMING W 10 TO 15 KT LATE. GUSTS UP  
TO 25 KT. WAVES 2 FT. SHOWERS WITH A CHANCE OF TSTMS.    
SUN NIGHT  
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO  
2 FT. A CHANCE OF SHOWERS.    
MON...NW WINDS 10 TO 15 KT  
BECOMING W 5 KT IN THE AFTERNOON.  
WAVES 1 TO 2 FT.    
MON NIGHT  
SW WINDS 5 TO 10 KT. WAVES 1 FT.    
TUE...NW WINDS 10 TO 15 KT  
BECOMING N AFTER MIDNIGHT. WAVES 2 FT.   
WED...NE WINDS 10 TO 15 KT  
BECOMING SE 5 TO 10 KT. WAVES 1 TO  
2 FT.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 
 
 
ANZ530-050800-  
CHESAPEAKE BAY NORTH OF POOLES ISLAND-  
500 PM EDT SAT APR 4 2026  
   
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON  
 
   
REST OF THIS AFTERNOON  
SE WINDS 10 KT. WAVES 1 FT.    
TONIGHT...SE WINDS 10 TO 15 KT  
BECOMING S LATE. GUSTS UP TO  
20 KT. WAVES 1 FT. A CHANCE OF SHOWERS.    
SUN...SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT  
BECOMING W 10 TO  
15 KT WITH GUSTS TO 20 KT IN THE AFTERNOON. WAVES 2 FT. SHOWERS.   
SUN NIGHT  
NW WINDS 10 TO 15 KT. WAVES 1 FT.    
MON  
W WINDS 5 TO 10 KT. WAVES 1 FT.    
MON NIGHT  
W WINDS 5 TO 10 KT. WAVES 1 FT.    
TUE...NW WINDS 10 TO 15 KT  
BECOMING N 5 KT AFTER MIDNIGHT. WAVES  
1 TO 2 FT.    
WED  
SE WINDS AROUND 5 KT. WAVES 1 FT OR LESS.  
 
 
 
ANZ531-050800-  
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-  
500 PM EDT SAT APR 4 2026  
   
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON  
 
   
REST OF THIS AFTERNOON  
SE WINDS 10 KT. WAVES 1 FT.    
TONIGHT  
SE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT. A  
CHANCE OF SHOWERS.    
SUN...S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT  
BECOMING W 10 TO  
15 KT WITH GUSTS TO 20 KT IN THE AFTERNOON. WAVES 2 TO 3 FT.  
SHOWERS.   
SUN NIGHT  
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.    
MON  
W WINDS 10 KT. WAVES 1 FT.    
MON NIGHT  
W WINDS 5 TO 10 KT. WAVES 1 FT.    
TUE...NW WINDS 15 TO 20 KT  
BECOMING N 5 TO 10 KT AFTER MIDNIGHT.  
WAVES 1 TO 2 FT.    
WED...E WINDS 5 TO 10 KT  
BECOMING SE. WAVES 1 FT.  
 
 
 
ANZ538-050800-  
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-  
500 PM EDT SAT APR 4 2026  
   
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON  
 
   
REST OF THIS AFTERNOON  
SE WINDS 10 KT. WAVES 1 FT.    
TONIGHT  
SE WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A  
CHANCE OF SHOWERS.    
SUN...SW WINDS 10 TO 15 KT  
BECOMING W IN THE AFTERNOON. GUSTS UP  
TO 25 KT UNTIL LATE AFTERNOON. WAVES 1 FT. SHOWERS.   
SUN NIGHT  
NW WINDS 5 TO 10 KT. WAVES 1 FT.    
MON  
W WINDS 5 TO 10 KT. WAVES 1 FT.    
MON NIGHT  
W WINDS 5 KT. WAVES LESS THAN 1 FT.    
TUE...NW WINDS 10 TO 15 KT  
BECOMING N 5 KT AFTER MIDNIGHT. WAVES  
1 FT OR LESS.    
WED  
SE WINDS AROUND 5 KT. WAVES FLAT.  
 
 
 
ANZ539-050800-  
CHESTER RIVER TO QUEENSTOWN MD-  
500 PM EDT SAT APR 4 2026  
   
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON  
 
   
REST OF THIS AFTERNOON  
S WINDS 10 KT. WAVES 1 FT.    
TONIGHT...S WINDS 15 TO 20 KT. GUSTS UP TO 20 KT  
INCREASING TO  
25 KT LATE. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.    
SUN...S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT  
BECOMING W 10 TO  
15 KT WITH GUSTS TO 25 KT IN THE AFTERNOON. WAVES 2 FT. SHOWERS.   
SUN NIGHT  
NW WINDS 10 TO 15 KT. WAVES 2 FT.    
MON  
W WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.    
MON NIGHT  
W WINDS 5 TO 10 KT. WAVES 1 FT.    
TUE...NW WINDS 10 TO 15 KT  
BECOMING N. WAVES 1 TO 2 FT.    
WED...E WINDS 5 TO 10 KT  
BECOMING SE. WAVES 1 FT OR LESS.  
 
 
 
ANZ532-050800-  
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-  
500 PM EDT SAT APR 4 2026  
   
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON  
 
   
REST OF THIS AFTERNOON  
S WINDS 15 KT WITH GUSTS TO 20 KT. WAVES  
2 FT.    
TONIGHT  
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO 3 FT.  
A CHANCE OF SHOWERS.    
SUN...S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT  
BECOMING W 10 TO  
15 KT WITH GUSTS TO 25 KT IN THE AFTERNOON. WAVES 3 FT. SHOWERS.   
SUN NIGHT  
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.    
MON  
W WINDS 5 TO 10 KT. WAVES 1 FT.    
MON NIGHT  
W WINDS 5 TO 10 KT. WAVES 1 FT.    
TUE...NW WINDS 15 TO 20 KT  
BECOMING N 10 TO 15 KT AFTER MIDNIGHT.  
WAVES 2 FT.    
WED...NE WINDS 10 TO 15 KT  
BECOMING SE 5 TO 10 KT. WAVES 1 TO  
2 FT.  
 
 
 
ANZ540-050800-  
EASTERN BAY-  
500 PM EDT SAT APR 4 2026  
   
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON  
 
   
REST OF THIS AFTERNOON  
S WINDS 10 KT. WAVES 1 FT.    
TONIGHT...S WINDS 15 TO 20 KT. GUSTS UP TO 20 KT  
INCREASING TO  
25 KT LATE. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.    
SUN...SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT  
BECOMING W 10 KT  
LATE. WAVES 2 FT. SHOWERS.   
SUN NIGHT  
NW WINDS 10 TO 15 KT. WAVES 1 FT.    
MON  
W WINDS 5 TO 10 KT. WAVES 1 FT.    
MON NIGHT  
W WINDS 5 TO 10 KT. WAVES 1 FT.    
TUE...NW WINDS 10 TO 15 KT  
BECOMING N AFTER MIDNIGHT. WAVES 1 TO  
2 FT.    
WED...NE WINDS 10 TO 15 KT  
BECOMING SE 5 KT. WAVES 1 FT OR LESS.  
 
 
 
ANZ533-050800-  
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-  
500 PM EDT SAT APR 4 2026  
   
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON  
 
   
REST OF THIS AFTERNOON  
S WINDS 15 KT WITH GUSTS TO 20 KT. WAVES  
2 FT.    
TONIGHT  
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO 3 FT.   
SUN...SW WINDS 15 TO 20 KT  
BECOMING W 10 TO 15 KT LATE. GUSTS UP  
TO 25 KT. WAVES 3 FT. SHOWERS.   
SUN NIGHT  
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.    
MON  
NW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.    
MON NIGHT  
SW WINDS 5 TO 10 KT. WAVES 1 FT.    
TUE...NW WINDS 15 TO 20 KT  
BECOMING N 10 TO 15 KT AFTER MIDNIGHT.  
WAVES 2 TO 3 FT.    
WED...NE WINDS 10 TO 15 KT  
BECOMING SE 5 TO 10 KT. WAVES 1 TO  
2 FT.  
 
 
 
ANZ541-050800-  
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-  
500 PM EDT SAT APR 4 2026  
   
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON  
 
   
REST OF THIS AFTERNOON  
S WINDS 15 KT. WAVES 1 FT.    
TONIGHT  
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT. A  
CHANCE OF SHOWERS.    
SUN...SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT  
BECOMING W 10 TO  
15 KT LATE. WAVES 2 TO 3 FT. SHOWERS.   
SUN NIGHT  
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.    
MON  
NW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.    
MON NIGHT  
SW WINDS 5 TO 10 KT. WAVES 1 FT.    
TUE...NW WINDS 15 TO 20 KT  
BECOMING N 10 TO 15 KT AFTER MIDNIGHT.  
WAVES 1 TO 2 FT.    
WED...NE WINDS 10 TO 15 KT  
BECOMING SE 5 TO 10 KT. WAVES 1 FT.  
 
 
 
ANZ542-050800-  
PATUXENT RIVER TO BROOMES ISLAND MD-  
500 PM EDT SAT APR 4 2026  
   
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON  
 
   
REST OF THIS AFTERNOON  
S WINDS 10 KT. WAVES 1 FT.    
TONIGHT  
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT. WAVES 1 FT.    
SUN...SW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT  
BECOMING W 5 TO  
10 KT LATE. WAVES 1 FT. SHOWERS.   
SUN NIGHT  
NW WINDS 5 TO 10 KT. WAVES 1 FT.    
MON  
NW WINDS 5 TO 10 KT. WAVES 1 FT.    
MON NIGHT  
SW WINDS 5 KT. WAVES LESS THAN 1 FT.    
TUE...NW WINDS 10 TO 15 KT  
BECOMING N 5 TO 10 KT AFTER MIDNIGHT.  
WAVES 1 FT.    
WED...E WINDS 5 TO 10 KT  
BECOMING SE. WAVES 1 FT.  
 
 
 
ANZ534-050800-  
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-  
500 PM EDT SAT APR 4 2026  
   
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON  
 
   
REST OF THIS AFTERNOON  
S WINDS 15 KT WITH GUSTS TO 20 KT. WAVES  
2 FT.    
TONIGHT  
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.    
SUN...SW WINDS 15 TO 20 KT  
BECOMING W 10 TO 15 KT LATE. GUSTS UP  
TO 25 KT. WAVES 3 FT. SHOWERS WITH A CHANCE OF TSTMS.    
SUN NIGHT  
NW WINDS 15 TO 20 KT. WAVES 2 TO 3 FT. A CHANCE OF  
SHOWERS.    
MON...NW WINDS 15 TO 20 KT  
BECOMING W 5 TO 10 KT IN THE  
AFTERNOON. WAVES 3 FT...SUBSIDING TO 1 FT IN THE AFTERNOON.    
MON NIGHT  
SW WINDS 10 TO 15 KT. WAVES 1 FT.    
TUE...NW WINDS 15 TO 20 KT  
BECOMING N AFTER MIDNIGHT. WAVES 3 FT.   
WED...NE WINDS 15 TO 20 KT...BECOMING SE 5 TO 10 KT. WAVES 3 FT  
 
SUBSIDING TO 1 FT.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 
 
 
ANZ543-050800-  
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-  
500 PM EDT SAT APR 4 2026  
   
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON  
 
   
REST OF THIS AFTERNOON  
S WINDS 15 KT WITH GUSTS TO 20 KT. WAVES  
2 FT.    
TONIGHT  
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.    
SUN...S WINDS 15 TO 20 KT  
BECOMING SW 10 TO 15 KT LATE. GUSTS UP  
TO 30 KT...DIMINISHING TO 20 KT LATE. WAVES 2 FT. SHOWERS.   
SUN NIGHT  
NW WINDS 15 TO 20 KT. WAVES 1 TO 2 FT. A CHANCE OF  
SHOWERS.    
MON...NW WINDS 10 TO 15 KT  
BECOMING W 5 TO 10 KT IN THE  
AFTERNOON. GUSTS UP TO 20 KT. WAVES 1 TO 2 FT.    
MON NIGHT  
SW WINDS 10 TO 15 KT. WAVES 1 FT.    
TUE...NW WINDS 15 TO 20 KT  
BECOMING N 10 TO 15 KT AFTER MIDNIGHT.  
WAVES 2 FT.    
WED...NE WINDS 10 TO 15 KT  
BECOMING SE 5 TO 10 KT. WAVES 1 TO  
2 FT.  
 
 
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