104  
FZUS51 KLWX 300627  
CWFLWX  
 
COASTAL WATERS FORECAST  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
226 AM EDT SUN AUG 30 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.  
 
ANZ500-302000-  
226 AM EDT SUN AUG 30 2026  
 
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...  
 
HIGH PRESSURE WILL BUILD NORTH OF THE AREA THIS WEEKEND, THEN DRIFT  
INTO THE SOUTHEASTERN US EARLY NEXT WEEK. A SMALL CRAFT ADVISORY MAY  
BE NEEDED SUNDAY AFTERNOON AND NIGHT.  
 

 
 
ANZ535-302000-  
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-  
226 AM EDT SUN AUG 30 2026  
   
OVERNIGHT
 
S WINDS 5 KT. WAVES LESS THAN 1 FT.    
SUN
 
S WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN NIGHT
 
SW WINDS AROUND 5 KT. WAVES 1 FT.    
MON
 
NW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.    
MON NIGHT
 
S WINDS AROUND 5 KT. WAVES 1 FT.    
TUE
 
W WINDS AROUND 5 KT. WAVES 1 FT.    
TUE NIGHT
 
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS.    
WED
 
SW WINDS AROUND 5 KT. WAVES 1 FT.    
THU
 
W WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND TSTMS  
THROUGH THE NIGHT. A CHANCE OF SHOWERS AFTER MIDNIGHT.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 

 
 
ANZ536-302000-  
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-  
226 AM EDT SUN AUG 30 2026  
   
OVERNIGHT
 
S WINDS 5 KT. WAVES LESS THAN 1 FT.    
SUN
 
S WINDS AROUND 5 KT. WAVES 1 FT.    
SUN NIGHT
 
S WINDS 5 KT. WAVES LESS THAN 1 FT.    
MON
 
NW WINDS AROUND 5 KT. WAVES 1 FT.    
MON NIGHT
 
S WINDS AROUND 5 KT. WAVES 1 FT.    
TUE
 
W WINDS AROUND 5 KT. WAVES 1 FT.    
TUE NIGHT
 
SW WINDS AROUND 5 KT. WAVES 1 FT.    
WED
 
SW WINDS AROUND 5 KT. WAVES 1 FT.    
THU
 
SW WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.  
 

 
 
ANZ537-302000-  
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-  
226 AM EDT SUN AUG 30 2026  
   
OVERNIGHT
 
S WINDS 5 KT. WAVES LESS THAN 1 FT.    
SUN
 
S WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN NIGHT
 
S WINDS 5 TO 10 KT. WAVES 1 FT.    
MON
 
N WINDS AROUND 5 KT. WAVES 1 FT OR LESS.    
MON NIGHT
 
S WINDS 5 KT. WAVES LESS THAN 1 FT.    
TUE
 
SW WINDS AROUND 5 KT. WAVES 1 FT.    
TUE NIGHT
 
SW WINDS 5 KT. WAVES LESS THAN 1 FT.    
WED...N WINDS AROUND 5 KT
 
BECOMING S. WAVES 1 FT.    
THU
 
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.  
 

 
 
ANZ530-302000-  
CHESAPEAKE BAY NORTH OF POOLES ISLAND-  
226 AM EDT SUN AUG 30 2026  
   
OVERNIGHT
 
S WINDS 5 KT. WAVES LESS THAN 1 FT.    
SUN
 
S WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN NIGHT...SW WINDS 5 TO 10 KT
 
BECOMING NW LATE. WAVES 1 FT.    
MON
 
E WINDS AROUND 5 KT. WAVES 1 FT.    
MON NIGHT
 
S WINDS AROUND 5 KT. WAVES 1 FT.    
TUE
 
SW WINDS AROUND 5 KT. WAVES 1 FT.    
TUE NIGHT
 
W WINDS AROUND 5 KT. WAVES 1 FT.    
WED
 
SE WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND  
TSTMS THROUGH THE NIGHT.    
THU
 
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF TSTMS  
THROUGH THE NIGHT. A CHANCE OF SHOWERS.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 

 
 
ANZ531-302000-  
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-  
226 AM EDT SUN AUG 30 2026  
   
OVERNIGHT
 
S WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN
 
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE LATE MORNING  
AND AFTERNOON. WAVES 1 TO 2 FT.    
SUN NIGHT...S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
 
BECOMING W  
AROUND 5 KT LATE. WAVES 1 TO 2 FT.    
MON
 
NE WINDS AROUND 5 KT. WAVES FLAT.    
MON NIGHT
 
S WINDS 5 KT. WAVES FLAT.    
TUE
 
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.    
TUE NIGHT
 
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.    
WED...E WINDS AROUND 5 KT
 
BECOMING SE. WAVES 1 FT OR LESS.    
THU...SW WINDS 5 TO 10 KT
 
BECOMING W AFTER MIDNIGHT. WAVES 1 FT.  
A CHANCE OF TSTMS THROUGH THE NIGHT. A CHANCE OF SHOWERS.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 

 
 
ANZ538-302000-  
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-  
226 AM EDT SUN AUG 30 2026  
   
OVERNIGHT
 
S WINDS 5 KT. WAVES FLAT.    
SUN
 
S WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN NIGHT...S WINDS 5 TO 10 KT
 
BECOMING W LATE. WAVES 1 FT OR  
LESS.    
MON
 
NE WINDS AROUND 5 KT. WAVES FLAT.    
MON NIGHT
 
S WINDS AROUND 5 KT. WAVES FLAT.    
TUE
 
SW WINDS 5 KT. WAVES LESS THAN 1 FT.    
TUE NIGHT
 
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS.    
WED
 
SE WINDS AROUND 5 KT. WAVES 1 FT OR LESS.    
THU
 
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF TSTMS  
THROUGH THE NIGHT. A CHANCE OF SHOWERS.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 

 
 
ANZ539-302000-  
CHESTER RIVER TO QUEENSTOWN MD-  
226 AM EDT SUN AUG 30 2026  
   
OVERNIGHT
 
S WINDS 5 KT. WAVES LESS THAN 1 FT.    
SUN
 
S WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN NIGHT
 
SW WINDS 5 TO 10 KT. WAVES 1 FT.    
MON
 
N WINDS AROUND 5 KT. WAVES FLAT.    
MON NIGHT
 
S WINDS AROUND 5 KT. WAVES FLAT.    
TUE
 
SW WINDS 5 KT. WAVES LESS THAN 1 FT.    
TUE NIGHT
 
SW WINDS 5 KT. WAVES LESS THAN 1 FT.    
WED
 
SE WINDS 5 KT. WAVES LESS THAN 1 FT.    
THU
 
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF TSTMS  
THROUGH THE NIGHT. A CHANCE OF SHOWERS.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 

 
 
ANZ532-302000-  
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-  
226 AM EDT SUN AUG 30 2026  
   
OVERNIGHT
 
S WINDS 10 KT. WAVES 1 FT.    
SUN
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.    
SUN NIGHT...S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
 
BECOMING SW  
5 KT LATE. WAVES 2 FT.    
MON
 
NE WINDS AROUND 5 KT. WAVES 1 FT OR LESS.    
MON NIGHT
 
S WINDS 5 KT. WAVES LESS THAN 1 FT.    
TUE
 
SW WINDS 5 TO 10 KT. WAVES 1 FT.    
TUE NIGHT
 
SW WINDS 5 TO 10 KT. WAVES 1 FT.    
WED...NE WINDS 5 KT
 
BECOMING SE. WAVES 1 FT OR LESS.    
THU
 
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF TSTMS THROUGH  
THE NIGHT. A CHANCE OF SHOWERS.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 

 
 
ANZ540-302000-  
EASTERN BAY-  
226 AM EDT SUN AUG 30 2026  
   
OVERNIGHT
 
S WINDS 5 KT. WAVES LESS THAN 1 FT.    
SUN
 
S WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN NIGHT
 
SW WINDS 5 TO 10 KT. WAVES 1 FT.    
MON
 
N WINDS AROUND 5 KT. WAVES 1 FT OR LESS.    
MON NIGHT
 
S WINDS AROUND 5 KT. WAVES FLAT.    
TUE
 
SW WINDS 5 KT. WAVES LESS THAN 1 FT.    
TUE NIGHT
 
SW WINDS 5 KT. WAVES LESS THAN 1 FT.    
WED
 
SE WINDS AROUND 5 KT. WAVES 1 FT OR LESS.    
THU
 
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF TSTMS  
THROUGH THE NIGHT. A CHANCE OF SHOWERS.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 

 
 
ANZ533-302000-  
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-  
226 AM EDT SUN AUG 30 2026  
   
OVERNIGHT
 
S WINDS 10 KT. WAVES 1 FT.    
SUN
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.    
SUN NIGHT...S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
 
BECOMING SW  
5 TO 10 KT LATE. WAVES 1 TO 2 FT.    
MON
 
N WINDS 5 KT. WAVES LESS THAN 1 FT.    
MON NIGHT
 
S WINDS 5 TO 10 KT. WAVES 1 FT.    
TUE
 
SW WINDS 5 TO 10 KT. WAVES 1 FT.    
TUE NIGHT
 
SW WINDS 5 TO 10 KT. WAVES 1 FT.    
WED...NE WINDS 5 KT
 
BECOMING SE. WAVES 1 FT.    
THU
 
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.  
 

 
 
ANZ541-302000-  
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-  
226 AM EDT SUN AUG 30 2026  
   
OVERNIGHT
 
SE WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN
 
S WINDS 10 TO 15 KT. WAVES 1 FT.    
SUN NIGHT...S WINDS 10 TO 15 KT
 
BECOMING SW 5 TO 10 KT LATE.  
WAVES 1 FT.    
MON
 
NW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.    
MON NIGHT
 
S WINDS 5 TO 10 KT. WAVES 1 FT.    
TUE
 
SW WINDS 5 KT. WAVES LESS THAN 1 FT.    
TUE NIGHT
 
SW WINDS 5 TO 10 KT. WAVES 1 FT.    
WED...SW WINDS 5 KT
 
BECOMING SE. WAVES 1 FT OR LESS.    
THU
 
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF TSTMS  
THROUGH THE NIGHT. A CHANCE OF SHOWERS.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 

 
 
ANZ542-302000-  
PATUXENT RIVER TO BROOMES ISLAND MD-  
226 AM EDT SUN AUG 30 2026  
   
OVERNIGHT
 
S WINDS 5 KT. WAVES LESS THAN 1 FT.    
SUN
 
S WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN NIGHT
 
S WINDS 5 TO 10 KT. WAVES 1 FT.    
MON
 
N WINDS AROUND 5 KT. WAVES 1 FT.    
MON NIGHT
 
S WINDS 5 KT. WAVES LESS THAN 1 FT.    
TUE
 
SW WINDS 5 KT. WAVES LESS THAN 1 FT.    
TUE NIGHT
 
SW WINDS AROUND 5 KT. WAVES 1 FT.    
WED
 
S WINDS AROUND 5 KT. WAVES 1 FT.    
THU
 
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.  
 

 
 
ANZ534-302000-  
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-  
226 AM EDT SUN AUG 30 2026  
   
OVERNIGHT
 
SE WINDS 10 KT. WAVES 1 FT.    
SUN
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.    
SUN NIGHT...S WINDS 10 TO 15 KT
 
BECOMING SW LATE. GUSTS UP TO  
20 KT. WAVES 2 FT.    
MON...W WINDS 5 TO 10 KT
 
BECOMING S IN THE AFTERNOON. WAVES 1 FT.   
MON NIGHT
 
S WINDS 5 TO 10 KT. WAVES 1 FT.    
TUE
 
SW WINDS 5 TO 10 KT. WAVES 1 FT.    
TUE NIGHT
 
SW WINDS 5 TO 10 KT. WAVES 1 FT.    
WED...W WINDS 5 TO 10 KT
 
BECOMING S. WAVES 1 FT.    
THU
 
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.  
 

 
 
ANZ543-302000-  
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-  
226 AM EDT SUN AUG 30 2026  
   
OVERNIGHT
 
SE WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN
 
S WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON. WAVES  
1 FT.    
SUN NIGHT...S WINDS 10 TO 15 KT
 
BECOMING SW LATE. GUSTS UP TO  
20 KT. WAVES 1 FT.    
MON
 
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.    
MON NIGHT
 
S WINDS 5 TO 10 KT. WAVES 1 FT.    
TUE
 
SW WINDS 5 TO 10 KT. WAVES 1 FT.    
TUE NIGHT
 
SW WINDS 5 TO 10 KT. WAVES 1 FT.    
WED...W WINDS 5 TO 10 KT
 
BECOMING S. WAVES 1 FT OR LESS.    
THU
 
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS THROUGH  
THE NIGHT.  
 

 
 
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