997  
FZUS51 KLWX 050627  
CWFLWX  
 
COASTAL WATERS FORECAST  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
226 AM EDT WED AUG 5 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.  
 
ANZ500-052000-  
226 AM EDT WED AUG 5 2026  
 
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...  
 
A FRONTAL BOUNDARY STALLED OFF TO THE SOUTH WILL RETURN NORTH AS A  
WARM FRONT TODAY. DAILY SHOWER AND THUNDERSTORM CHANCES RETURN TO  
THE FORECAST THROUGH THE WEEKEND, WITH GUSTY WINDS POSSIBLE IN THE  
STRONGEST THUNDERSTORMS ESPECIALLY LATER THIS WEEK. ADDITIONAL SMALL  
CRAFT ADVISORIES MAY BE NEEDED AT TIMES LATE THIS WEEK DUE TO  
PERIODS OF SOUTHERLY CHANNELING.  
 

 
 
ANZ535-052000-  
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-  
227 AM EDT WED AUG 5 2026  
   
OVERNIGHT
 
E WINDS AROUND 5 KT. WAVES 1 FT OR LESS. SHOWERS LIKELY  
WITH A SLIGHT CHANCE OF TSTMS.    
WED
 
SE WINDS AROUND 5 KT. WAVES 1 FT. SHOWERS LIKELY WITH A  
CHANCE OF TSTMS.    
WED NIGHT
 
S WINDS 5 KT. WAVES LESS THAN 1 FT.    
THU
 
SW WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.    
THU NIGHT
 
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS  
AND TSTMS.    
FRI
 
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND  
TSTMS.    
FRI NIGHT
 
SW WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS  
AND TSTMS.    
SAT
 
SW WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND  
TSTMS THROUGH THE NIGHT. A CHANCE OF SHOWERS AFTER MIDNIGHT.    
SUN
 
W WINDS AROUND 5 KT. WAVES 1 FT.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 

 
 
ANZ536-052000-  
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-  
227 AM EDT WED AUG 5 2026  
   
OVERNIGHT
 
E WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS LIKELY WITH  
A SLIGHT CHANCE OF TSTMS.    
WED
 
SE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A CHANCE  
OF TSTMS.    
WED NIGHT
 
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND  
TSTMS.    
THU
 
SW WINDS 5 TO 10 KT. WAVES 1 FT.    
THU NIGHT
 
SW WINDS 5 TO 10 KT. WAVES 1 FT.    
FRI
 
SW WINDS 5 TO 10 KT. WAVES 1 FT.    
FRI NIGHT
 
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS  
AND TSTMS.    
SAT
 
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND  
TSTMS THROUGH THE NIGHT. A CHANCE OF SHOWERS AFTER MIDNIGHT.    
SUN
 
SW WINDS AROUND 5 KT. WAVES 1 FT.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 

 
 
ANZ537-052000-  
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-  
227 AM EDT WED AUG 5 2026  
   
OVERNIGHT
 
SE WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS LIKELY  
WITH A SLIGHT CHANCE OF TSTMS.    
WED
 
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.    
WED NIGHT
 
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND  
TSTMS.    
THU
 
SW WINDS 5 TO 10 KT. WAVES 1 FT.    
THU NIGHT
 
SW WINDS 10 KT. WAVES 1 FT.    
FRI
 
SW WINDS 5 TO 10 KT. WAVES 1 FT.    
FRI NIGHT
 
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS  
AND TSTMS.    
SAT
 
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND  
TSTMS THROUGH THE NIGHT. A CHANCE OF SHOWERS AFTER MIDNIGHT.    
SUN
 
SW WINDS AROUND 5 KT. WAVES 1 FT.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 

 
 
ANZ530-052000-  
CHESAPEAKE BAY NORTH OF POOLES ISLAND-  
227 AM EDT WED AUG 5 2026  
   
OVERNIGHT
 
E WINDS 5 KT. WAVES FLAT.    
WED
 
SE WINDS 5 KT. WAVES FLAT. SHOWERS LIKELY WITH A CHANCE OF  
TSTMS.    
WED NIGHT
 
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND  
TSTMS.    
THU
 
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.    
THU NIGHT
 
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS  
AND TSTMS.    
FRI
 
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND  
TSTMS.    
FRI NIGHT
 
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF  
SHOWERS AND TSTMS.    
SAT
 
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS AND  
TSTMS THROUGH THE NIGHT.    
SUN
 
W WINDS 5 KT. WAVES LESS THAN 1 FT.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 

 
 
ANZ531-052000-  
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-  
227 AM EDT WED AUG 5 2026  
   
OVERNIGHT
 
E WINDS 5 KT. WAVES LESS THAN 1 FT. A SLIGHT CHANCE OF  
SHOWERS AND TSTMS.    
WED
 
SE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A CHANCE  
OF TSTMS.    
WED NIGHT
 
S WINDS 10 KT. WAVES 1 FT.    
THU
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.    
THU NIGHT
 
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE EVENING.  
WAVES 1 TO 2 FT. A CHANCE OF SHOWERS AND TSTMS.    
FRI
 
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND  
TSTMS.    
FRI NIGHT
 
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS  
AND TSTMS.    
SAT
 
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND  
TSTMS THROUGH THE NIGHT. A CHANCE OF SHOWERS AFTER MIDNIGHT.    
SUN
 
SW WINDS 5 TO 10 KT. WAVES 1 FT.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 

 
 
ANZ538-052000-  
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-  
227 AM EDT WED AUG 5 2026  
   
OVERNIGHT
 
E WINDS 5 KT. WAVES FLAT. A SLIGHT CHANCE OF SHOWERS  
AND TSTMS.    
WED
 
SE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A CHANCE  
OF TSTMS.    
WED NIGHT
 
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND  
TSTMS.    
THU
 
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.    
THU NIGHT
 
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF  
SHOWERS AND TSTMS.    
FRI
 
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS AND  
TSTMS.    
FRI NIGHT
 
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF  
SHOWERS AND TSTMS.    
SAT
 
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS  
AND TSTMS THROUGH THE NIGHT. A CHANCE OF SHOWERS AFTER MIDNIGHT.    
SUN
 
SW WINDS 5 KT. WAVES LESS THAN 1 FT.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 

 
 
ANZ539-052000-  
CHESTER RIVER TO QUEENSTOWN MD-  
227 AM EDT WED AUG 5 2026  
   
OVERNIGHT
 
E WINDS 5 KT. WAVES FLAT. A SLIGHT CHANCE OF SHOWERS  
AND TSTMS.    
WED
 
SE WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS LIKELY WITH A  
CHANCE OF TSTMS.    
WED NIGHT
 
S WINDS 5 TO 10 KT. WAVES 1 FT.    
THU
 
S WINDS 5 TO 10 KT. WAVES 1 FT.    
THU NIGHT
 
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND  
TSTMS.    
FRI
 
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND  
TSTMS.    
FRI NIGHT
 
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF  
SHOWERS AND TSTMS.    
SAT
 
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS AND  
TSTMS THROUGH THE NIGHT. A CHANCE OF SHOWERS AFTER MIDNIGHT.    
SUN
 
SW WINDS 5 KT. WAVES LESS THAN 1 FT.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 

 
 
ANZ532-052000-  
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-  
227 AM EDT WED AUG 5 2026  
   
OVERNIGHT
 
SE WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF  
SHOWERS WITH A SLIGHT CHANCE OF TSTMS.    
WED
 
SE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A CHANCE  
OF TSTMS.    
WED NIGHT
 
S WINDS 10 KT. WAVES 1 TO 2 FT.    
THU
 
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.    
THU NIGHT
 
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF  
SHOWERS AND TSTMS.    
FRI
 
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND  
TSTMS.    
FRI NIGHT
 
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS  
AND TSTMS.    
SAT
 
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND  
TSTMS.    
SUN
 
SW WINDS 5 TO 10 KT. WAVES 1 FT.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 

 
 
ANZ540-052000-  
EASTERN BAY-  
227 AM EDT WED AUG 5 2026  
   
OVERNIGHT
 
E WINDS 5 KT. WAVES FLAT. A CHANCE OF SHOWERS WITH A  
SLIGHT CHANCE OF TSTMS.    
WED
 
SE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS.   
WED NIGHT
 
S WINDS 10 KT. WAVES 1 FT.    
THU
 
S WINDS 10 KT. WAVES 1 FT.    
THU NIGHT
 
S WINDS 5 TO 10 KT. WAVES 1 FT.    
FRI
 
SW WINDS 5 TO 10 KT. WAVES 1 FT.    
FRI NIGHT
 
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS  
AND TSTMS.    
SAT
 
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND  
TSTMS THROUGH THE NIGHT. A CHANCE OF SHOWERS AFTER MIDNIGHT.    
SUN
 
SW WINDS 5 KT. WAVES LESS THAN 1 FT.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 

 
 
ANZ533-052000-  
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-  
227 AM EDT WED AUG 5 2026  
 
...SMALL CRAFT ADVISORY IN EFFECT FROM 2 PM EDT THIS AFTERNOON  
THROUGH THIS EVENING...  
   
OVERNIGHT
 
SE WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF  
SHOWERS WITH A SLIGHT CHANCE OF TSTMS.    
WED
 
SE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A  
CHANCE OF SHOWERS.    
WED NIGHT
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.    
THU
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.    
THU NIGHT
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO  
2 FT.    
FRI
 
SW WINDS 5 TO 10 KT. WAVES 1 FT.    
FRI NIGHT
 
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS  
AND TSTMS.    
SAT
 
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND  
TSTMS.    
SUN
 
SW WINDS 5 TO 10 KT. WAVES 1 FT.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 

 
 
ANZ541-052000-  
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-  
227 AM EDT WED AUG 5 2026  
   
OVERNIGHT
 
E WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS  
WITH A SLIGHT CHANCE OF TSTMS.    
WED
 
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.    
WED NIGHT
 
S WINDS 10 KT. WAVES 1 FT.    
THU
 
S WINDS 10 KT. WAVES 1 FT.    
THU NIGHT
 
S WINDS 10 KT. WAVES 1 FT.    
FRI
 
SW WINDS 5 TO 10 KT. WAVES 1 FT.    
FRI NIGHT
 
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS  
AND TSTMS.    
SAT
 
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND  
TSTMS.    
SUN
 
SW WINDS 5 TO 10 KT. WAVES 1 FT.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 

 
 
ANZ542-052000-  
PATUXENT RIVER TO BROOMES ISLAND MD-  
227 AM EDT WED AUG 5 2026  
   
OVERNIGHT
 
SE WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS LIKELY  
WITH A SLIGHT CHANCE OF TSTMS.    
WED
 
SE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.    
WED NIGHT
 
S WINDS 5 TO 10 KT. WAVES 1 FT.    
THU
 
S WINDS 5 TO 10 KT. WAVES 1 FT.    
THU NIGHT
 
S WINDS 5 TO 10 KT. WAVES 1 FT.    
FRI
 
SW WINDS 5 TO 10 KT. WAVES 1 FT.    
FRI NIGHT
 
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS  
AND TSTMS.    
SAT
 
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND  
TSTMS THROUGH THE NIGHT. A CHANCE OF SHOWERS AFTER MIDNIGHT.    
SUN
 
SW WINDS 5 KT. WAVES LESS THAN 1 FT.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 

 
 
ANZ534-052000-  
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-  
227 AM EDT WED AUG 5 2026  
 
...SMALL CRAFT ADVISORY IN EFFECT FROM 2 PM EDT THIS AFTERNOON  
THROUGH THIS EVENING...  
   
OVERNIGHT
 
SE WINDS 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A  
CHANCE OF TSTMS.    
WED
 
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.  
WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.    
WED NIGHT
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.    
THU
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.    
THU NIGHT
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.    
FRI
 
SW WINDS 10 KT. WAVES 2 FT.    
FRI NIGHT
 
SW WINDS 10 TO 15 KT. WAVES 2 FT. A CHANCE OF SHOWERS  
AND TSTMS.    
SAT
 
SW WINDS 10 KT. WAVES 2 FT. A CHANCE OF SHOWERS.    
SUN
 
SW WINDS 5 TO 10 KT. WAVES 1 FT.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 

 
 
ANZ543-052000-  
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-  
227 AM EDT WED AUG 5 2026  
 
...SMALL CRAFT ADVISORY IN EFFECT FROM 2 PM EDT THIS AFTERNOON  
THROUGH THIS EVENING...  
   
OVERNIGHT
 
SE WINDS 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A  
SLIGHT CHANCE OF TSTMS.    
WED
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A CHANCE  
OF SHOWERS.    
WED NIGHT
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.    
THU
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.    
THU NIGHT
 
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.    
FRI
 
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.    
FRI NIGHT
 
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A  
CHANCE OF SHOWERS AND TSTMS.    
SAT
 
SW WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF SHOWERS THROUGH  
THE NIGHT.    
SUN
 
SW WINDS 5 TO 10 KT. WAVES 1 FT.  
 
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.  
 

 
 
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