259  
FZUS51 KLWX 011159  
CWFLWX  
 
COASTAL WATERS FORECAST  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
759 AM EDT FRI MAY 1 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.  
 
ANZ500-012000-  
759 AM EDT FRI MAY 1 2026  
 
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...  
 
A TROUGH OF LOW PRESSURE LINGERS TODAY. A COASTAL LOW TRACKS OFF THE  
CAROLINAS ON SATURDAY BEFORE HIGH PRESSURE BUILDS TO THE SOUTHWEST  
TO FINISH THE WEEKEND. ANOTHER FRONTAL SYSTEM APPROACHES FROM THE  
WEST BY EARLY NEXT WEEK. SMALL CRAFT ADVISORIES MAY BE NEEDED  
TONIGHT, SATURDAY NIGHT INTO SUNDAY, AND MONDAY THROUGH TUESDAY.  
 
 
 
ANZ535-012000-  
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-  
759 AM EDT FRI MAY 1 2026  
   
TODAY...NW WINDS 10 KT  
BECOMING SW LATE THIS MORNING AND  
AFTERNOON. WAVES 1 FT OR LESS.    
TONIGHT...S WINDS 5 TO 10 KT  
BECOMING NW IN THE LATE EVENING AND  
OVERNIGHT. WAVES 1 FT. A CHANCE OF SHOWERS.    
SAT  
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.    
SAT NIGHT  
NW WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN  
NW WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.    
SUN NIGHT  
SW WINDS 5 TO 10 KT. WAVES 1 FT.    
MON  
SW WINDS 10 TO 15 KT. WAVES 1 FT.    
TUE  
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS  
AFTER MIDNIGHT.  
 
 
 
ANZ536-012000-  
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-  
759 AM EDT FRI MAY 1 2026  
   
TODAY...NW WINDS 5 TO 10 KT  
BECOMING S THIS AFTERNOON. WAVES  
1 FT.    
TONIGHT...SE WINDS 5 TO 10 KT  
BECOMING N AFTER MIDNIGHT. WAVES  
1 FT. A CHANCE OF SHOWERS.    
SAT  
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.    
SAT NIGHT  
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.    
SUN  
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.    
SUN NIGHT  
SW WINDS 5 TO 10 KT. WAVES 1 FT.    
MON  
SW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.    
TUE  
S WINDS 15 TO 20 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS  
AFTER MIDNIGHT.  
 
 
 
ANZ537-012000-  
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-  
759 AM EDT FRI MAY 1 2026  
   
TODAY...N WINDS 5 TO 10 KT  
BECOMING SE THIS AFTERNOON. WAVES 1 TO  
2 FT...SUBSIDING TO 1 FT OR LESS THIS AFTERNOON.    
TONIGHT...SE WINDS 10 TO 15 KT  
BECOMING SW 5 TO 10 KT AFTER  
MIDNIGHT, THEN BECOMING NW LATE. WAVES 2 FT. A CHANCE OF SHOWERS.    
SAT  
N WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF SHOWERS.    
SAT NIGHT  
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO  
2 FT. A CHANCE OF SHOWERS.    
SUN  
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.    
SUN NIGHT  
SW WINDS 5 TO 10 KT. WAVES 1 FT.    
MON  
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.    
TUE  
S WINDS 15 TO 20 KT. WAVES 2 TO 3 FT. A CHANCE OF SHOWERS  
AFTER MIDNIGHT.  
 
 
 
ANZ530-012000-  
CHESAPEAKE BAY NORTH OF POOLES ISLAND-  
759 AM EDT FRI MAY 1 2026  
   
TODAY...NW WINDS 5 TO 10 KT  
BECOMING SW THIS AFTERNOON. WAVES  
1 FT.    
TONIGHT...SW WINDS 5 KT  
BECOMING NW LATE. WAVES 1 FT. A CHANCE OF  
SHOWERS.    
SAT  
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.    
SAT NIGHT  
NW WINDS 10 TO 15 KT. WAVES 1 FT.    
SUN  
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.    
SUN NIGHT  
W WINDS 5 TO 10 KT. WAVES 1 FT.    
MON  
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.    
TUE  
S WINDS 15 TO 20 KT. WAVES 2 FT. A CHANCE OF SHOWERS AFTER  
MIDNIGHT.  
 
 
 
ANZ531-012000-  
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-  
759 AM EDT FRI MAY 1 2026  
   
TODAY...NW WINDS 5 TO 10 KT  
BECOMING S THIS AFTERNOON. WAVES 1 FT  
OR LESS.    
TONIGHT...S WINDS 5 TO 10 KT  
BECOMING NW LATE. WAVES 1 FT. A  
CHANCE OF SHOWERS.    
SAT  
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.    
SAT NIGHT  
NW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.    
SUN  
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.    
SUN NIGHT  
SW WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.    
MON  
S WINDS 15 TO 20 KT. WAVES 1 TO 2 FT.    
TUE  
S WINDS 20 TO 25 KT. WAVES 2 TO 3 FT. A CHANCE OF SHOWERS  
AFTER MIDNIGHT.  
 
 
 
ANZ538-012000-  
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-  
759 AM EDT FRI MAY 1 2026  
   
TODAY...NW WINDS 5 TO 10 KT  
BECOMING SE THIS AFTERNOON. WAVES  
1 FT OR LESS.    
TONIGHT...S WINDS 5 TO 10 KT  
BECOMING NW AFTER MIDNIGHT. WAVES  
1 FT OR LESS. A CHANCE OF SHOWERS.    
SAT  
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.    
SAT NIGHT  
NW WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN  
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.    
SUN NIGHT  
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.    
MON  
S WINDS 10 TO 15 KT. WAVES 1 FT.    
TUE...S WINDS 10 KT  
INCREASING TO 15 TO 20 KT. WAVES 1 TO 2 FT. A  
CHANCE OF SHOWERS AFTER MIDNIGHT.  
 
 
 
ANZ539-012000-  
CHESTER RIVER TO QUEENSTOWN MD-  
759 AM EDT FRI MAY 1 2026  
   
TODAY...NW WINDS 5 TO 10 KT  
BECOMING SW THIS AFTERNOON. WAVES  
1 TO 2 FT...SUBSIDING TO 1 FT OR LESS THIS AFTERNOON.    
TONIGHT...S WINDS 5 TO 10 KT  
BECOMING W LATE. WAVES 1 FT. A  
CHANCE OF SHOWERS.    
SAT  
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.    
SAT NIGHT  
NW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.    
SUN  
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.    
SUN NIGHT  
SW WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.    
MON  
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.    
TUE  
S WINDS 15 TO 20 KT. WAVES 2 TO 3 FT. A CHANCE OF SHOWERS  
AFTER MIDNIGHT.  
 
 
 
ANZ532-012000-  
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-  
759 AM EDT FRI MAY 1 2026  
   
TODAY...NW WINDS 5 TO 10 KT  
BECOMING S THIS AFTERNOON. WAVES 1 FT  
OR LESS.    
TONIGHT...S WINDS 10 TO 15 KT  
BECOMING W 5 TO 10 KT AFTER  
MIDNIGHT. GUSTS UP TO 20 KT. WAVES 2 FT. A CHANCE OF SHOWERS.    
SAT  
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.    
SAT NIGHT  
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO  
2 FT.    
SUN  
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.    
SUN NIGHT  
SW WINDS 5 TO 10 KT. WAVES 1 FT.    
MON...S WINDS 15 TO 20 KT. WAVES 1 TO 2 FT  
BUILDING TO 3 FT AFTER  
MIDNIGHT.    
TUE  
S WINDS 15 TO 20 KT. WAVES 3 FT. A CHANCE OF SHOWERS AFTER  
MIDNIGHT.  
 
 
 
ANZ540-012000-  
EASTERN BAY-  
759 AM EDT FRI MAY 1 2026  
   
TODAY...NW WINDS 5 TO 10 KT  
BECOMING S THIS AFTERNOON. WAVES 1 FT  
OR LESS.    
TONIGHT...S WINDS 5 TO 10 KT  
BECOMING W LATE. WAVES 1 FT. A  
CHANCE OF SHOWERS.    
SAT  
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.    
SAT NIGHT  
NW WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF SHOWERS.    
SUN  
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.    
SUN NIGHT  
SW WINDS 5 TO 10 KT. WAVES 1 FT.    
MON  
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.    
TUE  
S WINDS 15 TO 20 KT. WAVES 2 FT. A CHANCE OF SHOWERS AFTER  
MIDNIGHT.  
 
 
 
ANZ533-012000-  
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-  
759 AM EDT FRI MAY 1 2026  
   
TODAY...N WINDS 5 TO 10 KT  
BECOMING SE THIS AFTERNOON. WAVES 1 TO  
2 FT...SUBSIDING TO 1 FT OR LESS THIS AFTERNOON.    
TONIGHT...S WINDS 10 TO 15 KT  
BECOMING W 5 TO 10 KT AFTER  
MIDNIGHT. GUSTS UP TO 20 KT. WAVES 2 FT. A CHANCE OF SHOWERS.    
SAT  
N WINDS 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.    
SAT NIGHT  
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A  
CHANCE OF SHOWERS.    
SUN  
NW WINDS 15 TO 20 KT. WAVES 2 FT.    
SUN NIGHT  
SW WINDS 5 TO 10 KT. WAVES 1 FT.    
MON...S WINDS 15 TO 20 KT. WAVES 1 TO 2 FT  
BUILDING TO 3 FT AFTER  
MIDNIGHT.    
TUE...S WINDS 15 KT  
INCREASING TO 20 TO 25 KT. WAVES 3 FT. A  
CHANCE OF SHOWERS AFTER MIDNIGHT.  
 
 
 
ANZ541-012000-  
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-  
759 AM EDT FRI MAY 1 2026  
   
TODAY...NW WINDS 5 TO 10 KT  
BECOMING SW THIS AFTERNOON. WAVES  
1 TO 2 FT...SUBSIDING TO 1 FT OR LESS THIS AFTERNOON.    
TONIGHT...S WINDS 10 TO 15 KT  
BECOMING W 5 TO 10 KT AFTER  
MIDNIGHT. WAVES 1 FT. A CHANCE OF SHOWERS.    
SAT  
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.    
SAT NIGHT  
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO  
2 FT. A CHANCE OF SHOWERS.    
SUN  
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.    
SUN NIGHT  
SW WINDS 5 TO 10 KT. WAVES 1 FT.    
MON  
S WINDS 15 TO 20 KT. WAVES 1 TO 2 FT.    
TUE...S WINDS 15 KT  
INCREASING TO 20 TO 25 KT. WAVES 2 TO 3 FT. A  
CHANCE OF SHOWERS AFTER MIDNIGHT.  
 
 
 
ANZ542-012000-  
PATUXENT RIVER TO BROOMES ISLAND MD-  
759 AM EDT FRI MAY 1 2026  
   
TODAY...N WINDS 5 TO 10 KT  
BECOMING SE THIS AFTERNOON. WAVES  
1 FT.    
TONIGHT...SE WINDS 5 TO 10 KT  
BECOMING W AFTER MIDNIGHT. WAVES  
1 FT. A CHANCE OF SHOWERS.    
SAT  
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.    
SAT NIGHT  
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.    
SUN  
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.    
SUN NIGHT  
SW WINDS AROUND 5 KT. WAVES 1 FT.    
MON  
S WINDS 10 TO 15 KT. WAVES 1 FT.    
TUE  
S WINDS 15 TO 20 KT. WAVES 1 FT. A CHANCE OF SHOWERS AFTER  
MIDNIGHT.  
 
 
 
ANZ534-012000-  
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-  
759 AM EDT FRI MAY 1 2026  
   
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT THIS MORNING  
 
   
TODAY...N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT  
BECOMING W 5 KT  
EARLY THIS AFTERNOON, THEN BECOMING S LATE. WAVES 1 TO 2 FT.    
TONIGHT...S WINDS 10 TO 15 KT  
BECOMING W LATE. GUSTS UP TO 20 KT.  
WAVES 2 TO 3 FT. A CHANCE OF SHOWERS.    
SAT  
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. SHOWERS  
LIKELY.    
SAT NIGHT  
N WINDS 15 TO 20 KT. WAVES 2 TO 3 FT. A CHANCE OF  
SHOWERS.    
SUN  
NW WINDS 15 TO 20 KT. WAVES 3 FT.    
SUN NIGHT  
SW WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.    
MON...S WINDS 15 TO 20 KT. WAVES 2 TO 3 FT  
BUILDING TO 4 FT AFTER  
MIDNIGHT.    
TUE  
S WINDS 20 TO 25 KT. WAVES 3 FT.  
 
 
 
ANZ543-012000-  
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-  
759 AM EDT FRI MAY 1 2026  
   
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT THIS MORNING  
 
   
TODAY...N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT  
BECOMING W 5 KT  
EARLY THIS AFTERNOON, THEN BECOMING S LATE. WAVES 1 FT OR LESS.    
TONIGHT...S WINDS 10 TO 15 KT  
BECOMING W LATE. GUSTS UP TO 20 KT.  
WAVES 2 FT.    
SAT  
N WINDS 10 TO 15 KT. WAVES 1 FT. SHOWERS LIKELY.    
SAT NIGHT  
N WINDS 15 TO 20 KT. WAVES 1 TO 2 FT. A CHANCE OF  
SHOWERS.    
SUN  
NW WINDS 15 TO 20 KT. WAVES 2 FT.    
SUN NIGHT  
SW WINDS 5 TO 10 KT. WAVES 1 FT.    
MON...S WINDS 15 TO 20 KT. WAVES 1 TO 2 FT  
BUILDING TO 3 FT AFTER  
MIDNIGHT.    
TUE  
S WINDS 20 TO 25 KT. WAVES 2 TO 3 FT.  
 
 
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