507  
FZUS51 KLWX 222337  
CWFLWX  
 
COASTAL WATERS FORECAST  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
737 PM EDT FRI OCT 22 2021  
 
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.  
 
ANZ500-230800-  
737 PM EDT FRI OCT 22 2021  
 
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...  
 
A COLD FRONT WILL PASS THROUGH THE REGION TONIGHT, WHILE HIGH  
PRESSURE IS SLATED TO BUILD OVER THE AREA THROUGH MUCH OF THE  
WEEKEND. A WARM FRONT APPROACHES FROM THE WEST BY SUNDAY EVENING.  
SMALL CRAFT ADVISORIES MAY BE NEEDED LATE SUNDAY INTO MONDAY DUE TO  
INCREASED SOUTHERLY CHANNELING. GALE CONDITIONS WILL BE POSSIBLE ON  
TUESDAY.  
 

 
 
ANZ535-230800-  
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-  
737 PM EDT FRI OCT 22 2021  
   
TONIGHT
 
N WINDS 5 KT. WAVES LESS THAN 1 FT.    
SAT
 
W WINDS AROUND 5 KT. WAVES 1 FT.    
SAT NIGHT
 
NW WINDS AROUND 5 KT. WAVES 1 FT.    
SUN
 
E WINDS AROUND 5 KT. WAVES 1 FT.    
SUN NIGHT
 
S WINDS 5 TO 10 KT. WAVES 1 FT.    
MON
 
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.    
MON NIGHT
 
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.    
TUE
 
NW WINDS 10 TO 15 KT. WAVES 1 FT. SHOWERS LIKELY IN THE  
MORNING, THEN A CHANCE OF SHOWERS THROUGH THE NIGHT.    
WED...NW WINDS 5 TO 10 KT
 
BECOMING SE AFTER MIDNIGHT. WAVES 1 FT.  
A CHANCE OF SHOWERS THROUGH THE NIGHT.  
 

 
 
ANZ536-230800-  
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-  
737 PM EDT FRI OCT 22 2021  
   
TONIGHT
 
N WINDS 5 KT. WAVES LESS THAN 1 FT.    
SAT
 
NW WINDS 5 KT. WAVES LESS THAN 1 FT.    
SAT NIGHT
 
N WINDS 5 KT. WAVES LESS THAN 1 FT.    
SUN
 
SE WINDS AROUND 5 KT. WAVES 1 FT.    
SUN NIGHT
 
S WINDS 5 TO 10 KT. WAVES 1 FT.    
MON
 
SW WINDS 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.   
MON NIGHT
 
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.    
TUE
 
NW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. SHOWERS LIKELY IN THE  
MORNING, THEN A CHANCE OF SHOWERS THROUGH THE NIGHT.    
WED...NW WINDS 5 TO 10 KT
 
BECOMING SE. WAVES 1 FT. A CHANCE OF  
SHOWERS THROUGH THE NIGHT.  
 

 
 
ANZ537-230800-  
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-  
737 PM EDT FRI OCT 22 2021  
   
TONIGHT
 
N WINDS 5 KT. WAVES LESS THAN 1 FT.    
SAT
 
NW WINDS 5 TO 10 KT. WAVES 1 FT.    
SAT NIGHT...NW WINDS 5 TO 10 KT
 
BECOMING N LATE. WAVES 1 FT.    
SUN...NE WINDS 5 KT
 
BECOMING S IN THE AFTERNOON. WAVES 1 FT.    
SUN NIGHT
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.    
MON
 
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A  
CHANCE OF SHOWERS.    
MON NIGHT
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.  
SHOWERS LIKELY.    
TUE
 
NW WINDS 15 TO 20 KT. WAVES 2 TO 3 FT. SHOWERS LIKELY IN THE  
MORNING, THEN A CHANCE OF SHOWERS THROUGH THE NIGHT.    
WED...NW WINDS 10 TO 15 KT
 
BECOMING SW 5 TO 10 KT. WAVES 1 TO  
2 FT. A CHANCE OF SHOWERS THROUGH THE NIGHT.  
 

 
 
ANZ530-230800-  
CHESAPEAKE BAY NORTH OF POOLES ISLAND-  
737 PM EDT FRI OCT 22 2021  
   
TONIGHT
 
N WINDS 5 KT. WAVES LESS THAN 1 FT.    
SAT...NW WINDS 5 TO 10 KT
 
BECOMING W LATE. WAVES 1 FT OR LESS.    
SAT NIGHT
 
NW WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN
 
W WINDS AROUND 5 KT. WAVES 1 FT.    
SUN NIGHT
 
S WINDS 5 TO 10 KT. WAVES 1 FT.    
MON
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A CHANCE  
OF SHOWERS.    
MON NIGHT
 
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.    
TUE
 
NW WINDS 15 TO 20 KT. WAVES 1 TO 2 FT. SHOWERS LIKELY, MAINLY  
IN THE MORNING.    
WED...NW WINDS 10 TO 15 KT
 
BECOMING E 5 TO 10 KT AFTER MIDNIGHT.  
WAVES 1 FT. A CHANCE OF SHOWERS IN THE MORNING. A CHANCE OF SHOWERS  
THROUGH THE NIGHT.  
 

 
 
ANZ531-230800-  
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-  
737 PM EDT FRI OCT 22 2021  
   
TONIGHT
 
N WINDS 10 KT. WAVES 1 FT.    
SAT...NW WINDS 5 TO 10 KT
 
BECOMING W LATE. WAVES 1 FT.    
SAT NIGHT
 
NW WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN...N WINDS AROUND 5 KT
 
BECOMING S IN THE AFTERNOON. WAVES  
1 FT.    
SUN NIGHT
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO  
2 FT.    
MON
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A CHANCE  
OF SHOWERS.    
MON NIGHT
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.  
SHOWERS.   
TUE
 
NW WINDS 15 TO 20 KT. WAVES 2 TO 3 FT. SHOWERS, MAINLY IN THE  
MORNING.    
WED...NW WINDS 10 TO 15 KT
 
BECOMING E 5 TO 10 KT AFTER MIDNIGHT.  
WAVES 1 TO 2 FT. A CHANCE OF SHOWERS IN THE MORNING. A CHANCE OF  
SHOWERS THROUGH THE NIGHT.  
 

 
 
ANZ538-230800-  
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-  
737 PM EDT FRI OCT 22 2021  
   
TONIGHT
 
N WINDS 5 KT. WAVES FLAT.    
SAT
 
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.    
SAT NIGHT
 
NW WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN
 
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.    
SUN NIGHT
 
S WINDS 5 TO 10 KT. WAVES 1 FT.    
MON
 
S WINDS 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.    
MON NIGHT
 
S WINDS 10 KT. WAVES 1 FT. SHOWERS LIKELY.    
TUE
 
NW WINDS 15 TO 20 KT. WAVES 1 TO 2 FT. SHOWERS LIKELY, MAINLY  
IN THE MORNING.    
WED...NW WINDS 10 TO 15 KT
 
BECOMING NE 5 TO 10 KT. WAVES 1 FT. A  
CHANCE OF SHOWERS IN THE MORNING. A CHANCE OF SHOWERS THROUGH THE  
NIGHT.  
 

 
 
ANZ539-230800-  
CHESTER RIVER TO QUEENSTOWN MD-  
737 PM EDT FRI OCT 22 2021  
   
TONIGHT
 
N WINDS 5 TO 10 KT. WAVES 1 FT.    
SAT...N WINDS 5 KT
 
BECOMING W LATE. WAVES 1 FT.    
SAT NIGHT
 
NW WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN...N WINDS 5 KT
 
BECOMING S IN THE AFTERNOON. WAVES 1 FT.    
SUN NIGHT
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO  
2 FT.    
MON
 
S WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A CHANCE OF  
SHOWERS.    
MON NIGHT
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.  
SHOWERS LIKELY.    
TUE
 
NW WINDS 15 TO 20 KT. WAVES 2 TO 3 FT. SHOWERS LIKELY, MAINLY  
IN THE MORNING.    
WED...NW WINDS 15 TO 20 KT
 
BECOMING N 5 TO 10 KT IN THE EVENING,  
THEN BECOMING SE AFTER MIDNIGHT. WAVES 1 TO 2 FT. A CHANCE OF  
SHOWERS IN THE MORNING. A CHANCE OF SHOWERS THROUGH THE NIGHT.  
 

 
 
ANZ532-230800-  
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-  
737 PM EDT FRI OCT 22 2021  
   
TONIGHT
 
N WINDS 5 TO 10 KT. WAVES 1 FT.    
SAT
 
NW WINDS 5 TO 10 KT. WAVES 1 FT.    
SAT NIGHT
 
NW WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN...N WINDS 5 KT
 
BECOMING S IN THE AFTERNOON. WAVES 1 FT.    
SUN NIGHT
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.    
MON
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A CHANCE  
OF SHOWERS.    
MON NIGHT
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.  
SHOWERS.   
TUE
 
NW WINDS 15 TO 20 KT. WAVES 2 TO 3 FT. SHOWERS, MAINLY IN THE  
MORNING.    
WED...NW WINDS 10 TO 15 KT
 
BECOMING SE AFTER MIDNIGHT. WAVES 1 TO  
2 FT. A CHANCE OF SHOWERS IN THE MORNING. A CHANCE OF SHOWERS  
THROUGH THE NIGHT.  
 

 
 
ANZ540-230800-  
EASTERN BAY-  
737 PM EDT FRI OCT 22 2021  
   
TONIGHT
 
N WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.    
SAT...NW WINDS 5 KT
 
BECOMING W LATE. WAVES 1 FT.    
SAT NIGHT
 
NW WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN...N WINDS 5 KT
 
BECOMING S IN THE AFTERNOON. WAVES 1 FT.    
SUN NIGHT
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO  
2 FT.    
MON
 
S WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A CHANCE OF  
SHOWERS.    
MON NIGHT
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO  
2 FT. SHOWERS.   
TUE
 
NW WINDS 15 TO 20 KT. WAVES 2 FT. SHOWERS, MAINLY IN THE  
MORNING.    
WED...NW WINDS 15 TO 20 KT
 
BECOMING N 5 TO 10 KT IN THE EVENING,  
THEN BECOMING SE AFTER MIDNIGHT. WAVES 1 TO 2 FT. A CHANCE OF  
SHOWERS IN THE MORNING. A CHANCE OF SHOWERS THROUGH THE NIGHT.  
 

 
 
ANZ533-230800-  
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-  
737 PM EDT FRI OCT 22 2021  
   
TONIGHT
 
N WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.    
SAT
 
NW WINDS 5 TO 10 KT. WAVES 1 FT.    
SAT NIGHT
 
NW WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN...NE WINDS 5 KT
 
BECOMING S IN THE AFTERNOON. WAVES 1 FT.    
SUN NIGHT
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.    
MON
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A CHANCE  
OF SHOWERS.    
MON NIGHT
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.  
SHOWERS.   
TUE
 
NW WINDS 15 TO 20 KT. WAVES 2 TO 3 FT. SHOWERS, MAINLY IN THE  
MORNING.    
WED...NW WINDS 10 TO 15 KT
 
BECOMING W 5 TO 10 KT IN THE EVENING,  
THEN BECOMING S AFTER MIDNIGHT. WAVES 2 TO 3 FT...SUBSIDING TO 1 FT.  
A CHANCE OF SHOWERS IN THE MORNING. A CHANCE OF SHOWERS THROUGH THE  
NIGHT.  
 

 
 
ANZ541-230800-  
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-  
737 PM EDT FRI OCT 22 2021  
   
TONIGHT...NW WINDS 5 KT
 
BECOMING N AFTER MIDNIGHT. WAVES 1 FT OR  
LESS.    
SAT...NW WINDS 5 TO 10 KT
 
BECOMING W LATE. WAVES 1 FT.    
SAT NIGHT
 
NW WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN...NE WINDS 5 TO 10 KT
 
BECOMING S IN THE AFTERNOON. WAVES  
1 FT.    
SUN NIGHT
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO  
2 FT.    
MON
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A CHANCE  
OF SHOWERS.    
MON NIGHT
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.  
SHOWERS.   
TUE
 
NW WINDS 15 TO 20 KT. WAVES 2 FT. SHOWERS, MAINLY IN THE  
MORNING.    
WED...NW WINDS 15 TO 20 KT
 
BECOMING W 5 TO 10 KT IN THE EVENING,  
THEN BECOMING SE AFTER MIDNIGHT. WAVES 1 TO 2 FT. A CHANCE OF  
SHOWERS IN THE MORNING. A CHANCE OF SHOWERS THROUGH THE NIGHT.  
 

 
 
ANZ542-230800-  
PATUXENT RIVER TO BROOMES ISLAND MD-  
737 PM EDT FRI OCT 22 2021  
   
TONIGHT
 
N WINDS 5 KT. WAVES LESS THAN 1 FT.    
SAT
 
NW WINDS 5 KT. WAVES LESS THAN 1 FT.    
SAT NIGHT
 
NW WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN...NE WINDS 5 KT
 
BECOMING S IN THE AFTERNOON. WAVES 1 FT.    
SUN NIGHT
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.    
MON
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A CHANCE  
OF SHOWERS.    
MON NIGHT
 
S WINDS 10 KT. WAVES 1 FT. SHOWERS LIKELY.    
TUE
 
NW WINDS 10 TO 15 KT. WAVES 1 FT. SHOWERS LIKELY IN THE  
MORNING, THEN A CHANCE OF SHOWERS THROUGH THE NIGHT.    
WED...NW WINDS 10 TO 15 KT
 
BECOMING SW 5 TO 10 KT. WAVES 1 FT. A  
CHANCE OF SHOWERS THROUGH THE NIGHT.  
 

 
 
ANZ534-230800-  
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-  
737 PM EDT FRI OCT 22 2021  
   
TONIGHT
 
N WINDS 5 TO 10 KT. WAVES 1 FT.    
SAT
 
NW WINDS 5 TO 10 KT. WAVES 1 FT.    
SAT NIGHT
 
NW WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN...NE WINDS 5 TO 10 KT
 
BECOMING S IN THE AFTERNOON. WAVES  
1 FT.    
SUN NIGHT
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 TO  
3 FT.    
MON
 
S WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 3 FT.    
MON NIGHT
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 3 FT.  
SHOWERS.   
TUE...W WINDS 15 TO 20 KT
 
BECOMING NW. WAVES 3 FT. SHOWERS,  
MAINLY IN THE MORNING.    
WED...NW WINDS 15 TO 20 KT
 
BECOMING SW 10 TO 15 KT. WAVES 2 TO  
3 FT. A CHANCE OF SHOWERS IN THE MORNING. A CHANCE OF SHOWERS  
THROUGH THE NIGHT.  
 

 
 
ANZ543-230800-  
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-  
737 PM EDT FRI OCT 22 2021  
   
TONIGHT
 
N WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.    
SAT
 
NW WINDS 5 TO 10 KT. WAVES 1 FT.    
SAT NIGHT
 
NW WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN...NE WINDS 5 TO 10 KT
 
BECOMING S IN THE AFTERNOON. WAVES  
1 FT.    
SUN NIGHT
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.    
MON
 
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.    
MON NIGHT
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.  
SHOWERS.   
TUE...W WINDS 15 TO 20 KT
 
BECOMING NW. WAVES 2 FT. SHOWERS,  
MAINLY IN THE MORNING.    
WED...NW WINDS 15 TO 20 KT
 
BECOMING SW 10 TO 15 KT. WAVES 1 TO  
2 FT. A CHANCE OF SHOWERS IN THE MORNING. A CHANCE OF SHOWERS  
THROUGH THE NIGHT.  
 

 
 
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