679  
FZUS51 KLWX 130541  
CWFLWX  
 
COASTAL WATERS FORECAST  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
141 AM EDT TUE APR 13 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.  
 
ANZ500-132000-  
141 AM EDT TUE APR 13 2021  
 
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...  
 
A COLD FRONT WILL STALL TO THE SOUTH AND WEST OF THE WATERS  
OVERNIGHT INTO TUESDAY. HIGH PRESSURE BRIEFLY RETURNS FOR LATER  
TUESDAY INTO WEDNESDAY. ANOTHER AREA OF LOW PRESSURE MAY IMPACT THE  
REGION TOWARDS THE LATTER PORTION OF THE WEEK. SMALL CRAFT  
ADVISORIES MAY BE NEEDED FOR PORTIONS OF THE WATERS THURSDAY AND  
FRIDAY.  
 

 
 
ANZ535-132000-  
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-  
141 AM EDT TUE APR 13 2021  
   
OVERNIGHT
 
NE WINDS 5 KT. WAVES LESS THAN 1 FT. SCATTERED SHOWERS.   
TUE
 
N WINDS 5 KT. WAVES LESS THAN 1 FT.    
TUE NIGHT
 
S WINDS AROUND 5 KT. WAVES 1 FT.    
WED
 
S WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS LIKELY.    
WED NIGHT
 
SE WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.    
THU
 
NW WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A CHANCE  
OF RAIN.    
THU NIGHT
 
NW WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A  
CHANCE OF RAIN.    
FRI
 
NW WINDS 5 TO 10 KT. WAVES 1 FT.    
SAT
 
W WINDS 5 KT. WAVES LESS THAN 1 FT.  
 

 
 
ANZ536-132000-  
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-  
141 AM EDT TUE APR 13 2021  
   
OVERNIGHT
 
NE WINDS 5 KT. WAVES LESS THAN 1 FT. SCATTERED SHOWERS.   
TUE
 
N WINDS 5 KT. WAVES LESS THAN 1 FT.    
TUE NIGHT
 
S WINDS 5 KT. WAVES LESS THAN 1 FT.    
WED
 
S WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS LIKELY.    
WED NIGHT
 
SE WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.    
THU
 
NW WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A CHANCE  
OF RAIN.    
THU NIGHT
 
NW WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A  
CHANCE OF RAIN.    
FRI
 
NW WINDS 5 TO 10 KT. WAVES 1 FT.    
SAT
 
SW WINDS AROUND 5 KT. WAVES 1 FT.  
 

 
 
ANZ537-132000-  
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-  
141 AM EDT TUE APR 13 2021  
   
OVERNIGHT
 
NE WINDS 10 KT. WAVES 1 FT. SCATTERED SHOWERS.    
TUE
 
N WINDS 5 TO 10 KT. WAVES 1 FT.    
TUE NIGHT
 
S WINDS 5 KT. WAVES LESS THAN 1 FT.    
WED
 
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.    
WED NIGHT
 
E WINDS 5 TO 10 KT. WAVES 1 TO 2 FT. A CHANCE OF  
SHOWERS.    
THU
 
NW WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT. A  
CHANCE OF RAIN.    
THU NIGHT
 
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A  
CHANCE OF RAIN.    
FRI
 
NW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.    
SAT...NW WINDS 5 TO 10 KT
 
BECOMING SW. WAVES 1 FT.  
 

 
 
ANZ530-132000-  
CHESAPEAKE BAY NORTH OF POOLES ISLAND-  
141 AM EDT TUE APR 13 2021  
   
OVERNIGHT
 
NE WINDS 5 KT. WAVES LESS THAN 1 FT. SCATTERED SHOWERS.   
TUE
 
N WINDS 5 KT. WAVES LESS THAN 1 FT.    
TUE NIGHT
 
SW WINDS AROUND 5 KT. WAVES FLAT.    
WED
 
S WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS LIKELY.    
WED NIGHT
 
SE WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS LIKELY.    
THU
 
NW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.  
WAVES 1 FT. RAIN LIKELY.    
THU NIGHT
 
NW WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.  
RAIN LIKELY.    
FRI
 
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF RAIN.    
SAT
 
W WINDS 5 KT. WAVES LESS THAN 1 FT.  
 

 
 
ANZ531-132000-  
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-  
141 AM EDT TUE APR 13 2021  
   
OVERNIGHT
 
NE WINDS 10 KT. WAVES 1 FT. SCATTERED SHOWERS.    
TUE
 
N WINDS 5 TO 10 KT. WAVES 1 FT.    
TUE NIGHT
 
S WINDS 5 KT. WAVES LESS THAN 1 FT.    
WED
 
S WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS LIKELY.    
WED NIGHT
 
SE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.    
THU
 
NW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.  
WAVES 1 TO 2 FT. RAIN LIKELY.    
THU NIGHT
 
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.  
RAIN LIKELY.    
FRI
 
NW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF RAIN IN  
THE MORNING.    
SAT
 
W WINDS 5 TO 10 KT. WAVES 1 FT.  
 

 
 
ANZ538-132000-  
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-  
141 AM EDT TUE APR 13 2021  
   
OVERNIGHT
 
NE WINDS 5 KT. WAVES LESS THAN 1 FT. SCATTERED SHOWERS.   
TUE
 
NE WINDS 5 KT. WAVES FLAT.    
TUE NIGHT
 
S WINDS 5 KT. WAVES FLAT.    
WED
 
S WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS LIKELY.    
WED NIGHT
 
SE WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF  
SHOWERS.    
THU
 
NW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.  
WAVES 1 FT. A CHANCE OF RAIN.    
THU NIGHT
 
NW WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A  
CHANCE OF RAIN.    
FRI
 
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF RAIN IN THE  
MORNING.    
SAT
 
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS.  
 

 
 
ANZ539-132000-  
CHESTER RIVER TO QUEENSTOWN MD-  
141 AM EDT TUE APR 13 2021  
   
OVERNIGHT
 
NE WINDS 10 KT. WAVES 1 FT. SCATTERED SHOWERS.    
TUE
 
N WINDS 5 KT. WAVES LESS THAN 1 FT.    
TUE NIGHT
 
S WINDS 5 KT. WAVES LESS THAN 1 FT.    
WED
 
S WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS LIKELY.    
WED NIGHT
 
SE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.    
THU
 
NW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.  
WAVES 1 TO 2 FT. RAIN LIKELY.    
THU NIGHT
 
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.  
RAIN LIKELY.    
FRI
 
NW WINDS 10 TO 15 KT. WAVES 2 FT. A CHANCE OF RAIN IN THE  
MORNING.    
SAT
 
W WINDS 5 TO 10 KT. WAVES 1 FT.  
 

 
 
ANZ532-132000-  
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-  
141 AM EDT TUE APR 13 2021  
   
OVERNIGHT
 
NE WINDS 10 KT. WAVES 1 FT. SCATTERED SHOWERS.    
TUE
 
NE WINDS 5 TO 10 KT. WAVES 1 FT.    
TUE NIGHT
 
S WINDS 5 KT. WAVES LESS THAN 1 FT.    
WED
 
S WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS LIKELY.    
WED NIGHT
 
SE WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF  
SHOWERS.    
THU
 
NW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.  
WAVES 1 TO 2 FT. A CHANCE OF RAIN.    
THU NIGHT
 
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A  
CHANCE OF RAIN.    
FRI
 
NW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF RAIN IN  
THE MORNING.    
SAT...NW WINDS 5 TO 10 KT
 
BECOMING SW. WAVES 1 FT.  
 

 
 
ANZ540-132000-  
EASTERN BAY-  
141 AM EDT TUE APR 13 2021  
   
OVERNIGHT
 
NE WINDS 10 KT. WAVES 1 FT. SCATTERED SHOWERS.    
TUE
 
N WINDS 5 TO 10 KT. WAVES 1 FT.    
TUE NIGHT
 
S WINDS 5 KT. WAVES FLAT.    
WED
 
S WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS LIKELY.    
WED NIGHT
 
SE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.    
THU
 
NW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.  
WAVES 1 TO 2 FT. A CHANCE OF RAIN.    
THU NIGHT
 
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO  
2 FT. A CHANCE OF RAIN.    
FRI
 
NW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF RAIN IN  
THE MORNING.    
SAT...NW WINDS 5 TO 10 KT
 
BECOMING SW. WAVES 1 FT.  
 

 
 
ANZ533-132000-  
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-  
141 AM EDT TUE APR 13 2021  
   
OVERNIGHT
 
N WINDS 10 KT. WAVES 1 FT. SCATTERED SHOWERS.    
TUE
 
N WINDS 5 TO 10 KT. WAVES 1 FT.    
TUE NIGHT
 
S WINDS 5 KT. WAVES LESS THAN 1 FT.    
WED
 
S WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS LIKELY.    
WED NIGHT
 
SE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.    
THU
 
NW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.  
WAVES 1 TO 2 FT. A CHANCE OF RAIN.    
THU NIGHT
 
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A  
CHANCE OF RAIN.    
FRI
 
NW WINDS 10 TO 15 KT. WAVES 2 FT. A CHANCE OF RAIN IN THE  
MORNING.    
SAT...NW WINDS 5 TO 10 KT
 
BECOMING SW. WAVES 1 FT.  
 

 
 
ANZ541-132000-  
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-  
141 AM EDT TUE APR 13 2021  
   
OVERNIGHT
 
N WINDS 10 KT. WAVES 1 FT. SCATTERED SHOWERS.    
TUE
 
N WINDS 5 TO 10 KT. WAVES 1 FT.    
TUE NIGHT
 
S WINDS 5 KT. WAVES LESS THAN 1 FT.    
WED
 
S WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS LIKELY.    
WED NIGHT
 
SE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.    
THU
 
NW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.  
WAVES 1 TO 2 FT. A CHANCE OF RAIN.    
THU NIGHT
 
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A  
CHANCE OF RAIN.    
FRI
 
NW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF RAIN IN  
THE MORNING.    
SAT...NW WINDS 5 TO 10 KT
 
BECOMING SW. WAVES 1 FT.  
 

 
 
ANZ542-132000-  
PATUXENT RIVER TO BROOMES ISLAND MD-  
141 AM EDT TUE APR 13 2021  
   
OVERNIGHT
 
N WINDS 5 TO 10 KT. WAVES 1 FT. SCATTERED SHOWERS.    
TUE
 
N WINDS 5 TO 10 KT. WAVES 1 FT.    
TUE NIGHT
 
S WINDS 5 KT. WAVES LESS THAN 1 FT.    
WED
 
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.    
WED NIGHT
 
E WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.    
THU
 
NW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.  
WAVES 1 FT. A CHANCE OF RAIN.    
THU NIGHT
 
NW WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A  
CHANCE OF RAIN.    
FRI
 
NW WINDS 10 TO 15 KT. WAVES 1 FT.    
SAT
 
W WINDS 5 KT. WAVES LESS THAN 1 FT.  
 

 
 
ANZ534-132000-  
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-  
141 AM EDT TUE APR 13 2021  
   
OVERNIGHT
 
N WINDS 10 KT. WAVES 2 FT. NUMEROUS SHOWERS WITH A  
SLIGHT CHANCE OF TSTMS.    
TUE
 
N WINDS 5 TO 10 KT. WAVES 2 FT.    
TUE NIGHT...E WINDS 5 KT
 
BECOMING S AFTER MIDNIGHT. WAVES 1 FT.    
WED
 
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.    
WED NIGHT
 
E WINDS 5 TO 10 KT. WAVES 2 FT. SHOWERS LIKELY.    
THU
 
NW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.  
WAVES 1 TO 2 FT. A CHANCE OF RAIN.    
THU NIGHT
 
NW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 3 FT. A  
CHANCE OF RAIN.    
FRI
 
NW WINDS 10 TO 15 KT. WAVES 2 TO 3 FT.    
SAT...NW WINDS 5 TO 10 KT
 
BECOMING SW. WAVES 1 TO 2 FT.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 

 
 
ANZ543-132000-  
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-  
141 AM EDT TUE APR 13 2021  
   
OVERNIGHT
 
N WINDS 10 KT. WAVES 1 FT. NUMEROUS SHOWERS WITH A  
SLIGHT CHANCE OF TSTMS.    
TUE
 
N WINDS 5 TO 10 KT. WAVES 1 FT.    
TUE NIGHT...E WINDS 5 KT
 
BECOMING S AFTER MIDNIGHT. WAVES 1 FT.    
WED
 
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.    
WED NIGHT
 
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.    
THU
 
NW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.  
WAVES 1 TO 2 FT. A CHANCE OF RAIN.    
THU NIGHT
 
NW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT. A  
CHANCE OF RAIN.    
FRI
 
NW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.    
SAT...NW WINDS 5 TO 10 KT
 
BECOMING SW. WAVES 1 FT.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 

 
 
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