344  
FZUS51 KLWX 042357  
CWFLWX  
 
COASTAL WATERS FORECAST  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
757 PM EDT FRI SEP 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-  
757 PM EDT FRI SEP 4 2026  
 
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...  
 
SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS ARE EXPECTED THROUGH  
THIS EVENING IN A HOT AND HUMID AIR MASS. SPECIAL MARINE WARNINGS  
MAY BE NEEDED THIS AFTERNOON FOR STRONG THUNDERSTORMS MOVING OVER  
THE WATERS.  
 
 
 
ANZ535-050800-  
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-  
757 PM EDT FRI SEP 4 2026  
   
TONIGHT  
W WINDS 5 KT. WAVES LESS THAN 1 FT. A SLIGHT CHANCE OF  
SHOWERS AND TSTMS THIS EVENING, THEN A SLIGHT CHANCE OF SHOWERS  
AFTER MIDNIGHT.    
SAT  
N WINDS AROUND 5 KT. WAVES 1 FT.    
SAT NIGHT  
NE WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS  
AND TSTMS.    
SUN  
NE WINDS 5 KT. WAVES LESS THAN 1 FT.    
SUN NIGHT  
E WINDS AROUND 5 KT. WAVES 1 FT OR LESS.    
MON  
NE WINDS AROUND 5 KT. WAVES 1 FT.    
MON NIGHT  
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS.    
TUE  
S WINDS AROUND 5 KT. WAVES 1 FT.    
WED  
SW WINDS 5 TO 10 KT. WAVES 1 FT.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 
 
 
ANZ536-050800-  
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-  
757 PM EDT FRI SEP 4 2026  
   
TONIGHT  
W WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS  
AND TSTMS THIS EVENING, THEN A SLIGHT CHANCE OF SHOWERS AFTER  
MIDNIGHT.    
SAT  
N WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS AND  
TSTMS.    
SAT NIGHT  
NE WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF  
SHOWERS AND TSTMS.    
SUN  
NE WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN NIGHT  
E WINDS 5 TO 10 KT. WAVES 1 FT.    
MON  
NE WINDS AROUND 5 KT. WAVES 1 FT.    
MON NIGHT  
S WINDS AROUND 5 KT. WAVES 1 FT.    
TUE  
S WINDS AROUND 5 KT. WAVES 1 FT.    
WED  
SW WINDS 10 TO 15 KT. WAVES 1 FT.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 
 
 
ANZ537-050800-  
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-  
757 PM EDT FRI SEP 4 2026  
   
TONIGHT...NW WINDS 10 KT  
BECOMING W LATE THIS EVENING AND  
OVERNIGHT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS AND TSTMS THIS  
EVENING, THEN A CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF TSTMS  
AFTER MIDNIGHT.    
SAT  
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND  
TSTMS.    
SAT NIGHT  
NE WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN  
NE WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN NIGHT  
E WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.    
MON  
NE WINDS 5 TO 10 KT. WAVES 1 FT.    
MON NIGHT  
S WINDS AROUND 5 KT. WAVES 1 FT.    
TUE  
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.    
WED  
SW WINDS 15 TO 20 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-  
757 PM EDT FRI SEP 4 2026  
   
TONIGHT  
NW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.  
A CHANCE OF TSTMS, MAINLY THIS EVENING.    
SAT  
N WINDS 5 KT. WAVES LESS THAN 1 FT.    
SAT NIGHT  
N WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN  
NE WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN NIGHT  
E WINDS AROUND 5 KT. WAVES 1 FT.    
MON  
N WINDS AROUND 5 KT. WAVES 1 FT.    
MON NIGHT  
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS.    
TUE  
SW WINDS 5 TO 10 KT. WAVES 1 FT.    
WED  
SW WINDS 15 TO 20 KT. WAVES 1 TO 2 FT.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 
 
 
ANZ531-050800-  
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-  
757 PM EDT FRI SEP 4 2026  
   
TONIGHT...W WINDS 5 KT  
BECOMING NW LATE. WAVES 1 FT OR LESS. A  
CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF TSTMS THIS EVENING, THEN A  
SLIGHT CHANCE OF SHOWERS AND TSTMS AFTER MIDNIGHT.    
SAT  
N WINDS 5 TO 10 KT. WAVES 1 FT.    
SAT NIGHT  
NE WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN  
NE WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN NIGHT  
E WINDS 5 TO 10 KT. WAVES 1 FT.    
MON  
NE WINDS AROUND 5 KT. WAVES 1 FT OR LESS.    
MON NIGHT  
S WINDS AROUND 5 KT. WAVES FLAT.    
TUE  
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.    
WED  
SW WINDS 15 TO 20 KT. WAVES 1 TO 2 FT.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 
 
 
ANZ538-050800-  
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-  
757 PM EDT FRI SEP 4 2026  
   
TONIGHT  
NW WINDS 5 KT. WAVES FLAT. A CHANCE OF SHOWERS WITH A  
SLIGHT CHANCE OF TSTMS THIS EVENING, THEN A SLIGHT CHANCE OF SHOWERS  
AFTER MIDNIGHT.    
SAT  
N WINDS 5 KT. WAVES LESS THAN 1 FT.    
SAT NIGHT  
NE WINDS 5 KT. WAVES LESS THAN 1 FT.    
SUN  
NE WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN NIGHT  
E WINDS AROUND 5 KT. 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 TO 10 KT. WAVES 1 FT OR LESS.    
WED  
SW WINDS 5 TO 10 KT. WAVES 1 FT.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 
 
 
ANZ539-050800-  
CHESTER RIVER TO QUEENSTOWN MD-  
757 PM EDT FRI SEP 4 2026  
   
TONIGHT...W WINDS 5 KT  
BECOMING NW LATE. WAVES 1 FT OR LESS. A  
CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF TSTMS.    
SAT  
N WINDS 5 TO 10 KT. WAVES 1 FT.    
SAT NIGHT  
NE WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN  
NE WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN NIGHT  
E WINDS AROUND 5 KT. 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 TO 10 KT. WAVES 1 FT OR LESS.    
WED  
SW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 
 
 
ANZ532-050800-  
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-  
757 PM EDT FRI SEP 4 2026  
   
TONIGHT...W WINDS 5 TO 10 KT  
BECOMING NW LATE. WAVES 1 FT OR  
LESS. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF TSTMS.    
SAT  
N WINDS 5 TO 10 KT. WAVES 1 FT.    
SAT NIGHT  
NE WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN  
NE WINDS 10 KT. WAVES 1 FT.    
SUN NIGHT  
E WINDS 5 TO 10 KT. WAVES 1 FT.    
MON  
NE WINDS 5 KT. WAVES LESS THAN 1 FT.    
MON NIGHT  
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS.    
TUE  
SW WINDS 5 TO 10 KT. WAVES 1 FT.    
WED...SW WINDS 15 TO 20 KT. WAVES 1 TO 2 FT  
BUILDING TO 3 FT.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 
 
 
ANZ540-050800-  
EASTERN BAY-  
757 PM EDT FRI SEP 4 2026  
   
TONIGHT...W WINDS 5 KT  
BECOMING NW LATE. WAVES 1 FT OR LESS. A  
CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF TSTMS.    
SAT  
N WINDS 5 TO 10 KT. WAVES 1 FT.    
SAT NIGHT  
NE WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN  
NE WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN NIGHT  
E WINDS 5 TO 10 KT. 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 TO 10 KT. WAVES 1 FT OR LESS.    
WED  
SW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 
 
 
ANZ533-050800-  
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-  
757 PM EDT FRI SEP 4 2026  
   
TONIGHT...W WINDS 5 TO 10 KT  
BECOMING NW LATE. WAVES 1 FT OR  
LESS. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF TSTMS.    
SAT  
N WINDS 5 TO 10 KT. WAVES 1 FT.    
SAT NIGHT  
NE WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN  
NE WINDS 10 KT. WAVES 1 FT.    
SUN NIGHT  
E WINDS 5 TO 10 KT. WAVES 1 FT.    
MON  
NE WINDS 5 KT. WAVES LESS THAN 1 FT.    
MON NIGHT  
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS.    
TUE  
SW WINDS 5 TO 10 KT. WAVES 1 FT.    
WED  
SW WINDS 15 TO 20 KT. WAVES 1 TO 2 FT.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 
 
 
ANZ541-050800-  
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-  
757 PM EDT FRI SEP 4 2026  
   
TONIGHT...W WINDS 5 TO 10 KT  
BECOMING NW LATE. WAVES 1 FT OR  
LESS. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF TSTMS.    
SAT  
N WINDS 5 TO 10 KT. WAVES 1 FT.    
SAT NIGHT  
NE WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN  
NE WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN NIGHT  
E WINDS 5 TO 10 KT. WAVES 1 FT.    
MON  
NE WINDS AROUND 5 KT. WAVES 1 FT OR LESS.    
MON NIGHT  
S WINDS AROUND 5 KT. WAVES FLAT.    
TUE  
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.    
WED...SW WINDS 5 TO 10 KT  
INCREASING TO 15 TO 20 KT. WAVES 1 TO  
2 FT.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 
 
 
ANZ542-050800-  
PATUXENT RIVER TO BROOMES ISLAND MD-  
757 PM EDT FRI SEP 4 2026  
   
TONIGHT  
W WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS  
WITH A SLIGHT CHANCE OF TSTMS.    
SAT  
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.    
SAT NIGHT  
NE WINDS AROUND 5 KT. WAVES 1 FT.    
SUN  
NE WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN NIGHT  
E WINDS 5 TO 10 KT. WAVES 1 FT.    
MON  
NE 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.    
WED  
SW WINDS 5 TO 10 KT. WAVES 1 FT.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 
 
 
ANZ534-050800-  
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-  
757 PM EDT FRI SEP 4 2026  
   
TONIGHT  
W WINDS 10 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS AND  
TSTMS THIS EVENING, THEN A CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF  
TSTMS AFTER MIDNIGHT.    
SAT  
N WINDS 5 TO 10 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.    
SAT NIGHT  
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.    
SUN  
NE WINDS 10 KT. WAVES 1 FT.    
SUN NIGHT  
E WINDS 10 TO 15 KT. WAVES 2 FT.    
MON  
NE WINDS 5 TO 10 KT. WAVES 1 FT.    
MON NIGHT  
S WINDS 5 TO 10 KT. WAVES 1 FT.    
TUE...SW WINDS 5 KT  
BECOMING S 10 TO 15 KT. WAVES 1 TO 2 FT.    
WED...SW WINDS 15 TO 20 KT. WAVES 1 TO 2 FT  
BUILDING TO 3 FT.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 
 
 
ANZ543-050800-  
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-  
757 PM EDT FRI SEP 4 2026  
   
TONIGHT  
W WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF  
SHOWERS AND TSTMS THIS EVENING, THEN A CHANCE OF SHOWERS WITH A  
SLIGHT CHANCE OF TSTMS AFTER MIDNIGHT.    
SAT  
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.    
SAT NIGHT  
NE WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN  
NE WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN NIGHT  
E WINDS 10 TO 15 KT. WAVES 1 FT.    
MON  
NE WINDS 5 TO 10 KT. WAVES 1 FT.    
MON NIGHT  
SE WINDS 5 TO 10 KT. WAVES 1 FT.    
TUE  
SW WINDS 10 TO 15 KT. WAVES 1 FT OR LESS.    
WED...SW WINDS 15 TO 20 KT. WAVES 1 TO 2 FT  
BUILDING TO 3 FT  
AFTER MIDNIGHT.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 
 
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