547  
FZUS51 KLWX 092059  
CWFLWX  
 
COASTAL WATERS FORECAST  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
459 PM EDT SAT MAY 9 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.  
 
ANZ500-100800-  
459 PM EDT SAT MAY 9 2026  
 
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...  
 
A WARM FRONT WILL LIFT NORTHWARD ACROSS THE MID ATLANTIC TODAY,  
FOLLOWED BY A COLD FRONT SLOWLY PUSHING SOUTHEASTWARD SUNDAY INTO  
MONDAY. HIGH PRESSURE WILL BUILD IN FROM THE WEST ON TUESDAY BEFORE  
ANOTHER FRONTAL SYSTEM APPROACHES WEDNESDAY. SMALL CRAFT ADVISORIES  
MAY BE NEEDED AGAIN AT TIMES LATE SUNDAY NIGHT THROUGH TUESDAY  
MORNING AND AGAIN WEDNESDAY.  
 
 
 
ANZ535-100800-  
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-  
459 PM EDT SAT MAY 9 2026  
   
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING  
 
   
REST OF THIS AFTERNOON  
SW WINDS 10 KT. WAVES 1 FT. ISOLATED  
SHOWERS.    
TONIGHT  
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.    
SUN  
W WINDS 5 TO 10 KT. WAVES 1 FT. SCATTERED SHOWERS.    
SUN NIGHT  
N WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.    
MON  
N WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.    
MON NIGHT  
NW WINDS 5 TO 10 KT. WAVES 1 FT.    
TUE...NW WINDS AROUND 5 KT  
BECOMING S AFTER MIDNIGHT. WAVES 1 FT.   
WED...S WINDS 10 TO 15 KT  
BECOMING SW AROUND 5 KT AFTER MIDNIGHT.  
WAVES 1 FT. A CHANCE OF SHOWERS IN THE MORNING, THEN SHOWERS.  
 
 
 
ANZ536-100800-  
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-  
459 PM EDT SAT MAY 9 2026  
   
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING  
 
   
REST OF THIS AFTERNOON  
SW WINDS 10 KT. WAVES 1 FT. ISOLATED  
SHOWERS.    
TONIGHT  
SW WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN  
SW WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN NIGHT  
N WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.    
MON  
N WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.    
MON NIGHT  
NW WINDS 5 TO 10 KT. WAVES 1 FT.    
TUE...N WINDS 5 TO 10 KT  
BECOMING SE. WAVES 1 FT.    
WED  
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS IN THE  
AFTERNOON. SHOWERS LIKELY IN THE EVENING, THEN A CHANCE OF SHOWERS  
AFTER MIDNIGHT.  
 
 
 
ANZ537-100800-  
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-  
459 PM EDT SAT MAY 9 2026  
   
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING  
 
   
REST OF THIS AFTERNOON  
S WINDS 10 KT. WAVES 2 FT.    
TONIGHT  
SW WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN...W WINDS 5 TO 10 KT  
BECOMING SE LATE. WAVES 1 FT OR LESS.    
SUN NIGHT  
NE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.    
MON  
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. SHOWERS  
LIKELY.    
MON NIGHT...NW WINDS 5 KT  
INCREASING TO 10 TO 15 KT WITH GUSTS TO  
20 KT AFTER MIDNIGHT. WAVES 1 FT.    
TUE...N WINDS 10 TO 15 KT  
BECOMING SE 5 TO 10 KT. WAVES 1 TO  
2 FT.    
WED  
S WINDS 10 TO 15 KT. WAVES 2 FT. A CHANCE OF SHOWERS IN THE  
AFTERNOON. SHOWERS THROUGH THE NIGHT.  
 
 
 
ANZ530-100800-  
CHESAPEAKE BAY NORTH OF POOLES ISLAND-  
459 PM EDT SAT MAY 9 2026  
   
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING  
 
   
REST OF THIS AFTERNOON  
SW WINDS 10 KT. WAVES 1 FT. SCATTERED  
SHOWERS.    
TONIGHT  
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.    
SUN  
W WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. SCATTERED SHOWERS.    
SUN NIGHT  
N WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.    
MON...NE WINDS 5 TO 10 KT  
BECOMING W IN THE AFTERNOON. WAVES 1 FT  
OR LESS. SHOWERS LIKELY.    
MON NIGHT  
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.    
TUE...NW WINDS 5 TO 10 KT  
BECOMING S. WAVES 1 FT OR LESS.    
WED  
S WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF SHOWERS IN THE  
MORNING, THEN SHOWERS.  
 
 
 
ANZ531-100800-  
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-  
459 PM EDT SAT MAY 9 2026  
   
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING  
 
   
REST OF THIS AFTERNOON  
S WINDS 10 KT. WAVES 2 FT. ISOLATED  
SHOWERS.    
TONIGHT...SE WINDS 5 TO 10 KT...BECOMING SW LATE. WAVES 2 FT  
 
SUBSIDING TO FLAT AFTER MIDNIGHT.    
SUN  
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. SCATTERED SHOWERS.    
SUN NIGHT  
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO  
2 FT. SHOWERS LIKELY.    
MON...NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT  
BECOMING NW 5 KT  
IN THE AFTERNOON. WAVES 1 TO 2 FT. SHOWERS LIKELY.    
MON NIGHT...SW WINDS 5 KT  
BECOMING N 10 TO 15 KT AFTER MIDNIGHT.  
WAVES 1 TO 2 FT.    
TUE...N WINDS 10 TO 15 KT  
BECOMING W AROUND 5 KT IN THE AFTERNOON  
AND EVENING, THEN BECOMING S AFTER MIDNIGHT. WAVES 1 TO 2 FT...  
SUBSIDING TO 1 FT OR LESS.    
WED  
S WINDS 10 TO 15 KT. WAVES 2 FT. A CHANCE OF SHOWERS IN THE  
MORNING, THEN SHOWERS.  
 
 
 
ANZ538-100800-  
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-  
459 PM EDT SAT MAY 9 2026  
   
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING  
 
   
REST OF THIS AFTERNOON  
S WINDS 10 KT. WAVES 1 FT. ISOLATED  
SHOWERS.    
TONIGHT...SE WINDS 5 TO 10 KT  
BECOMING SW LATE. WAVES 1 FT OR  
LESS.    
SUN  
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. SCATTERED SHOWERS.    
SUN NIGHT  
N WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. SHOWERS LIKELY.   
MON...N WINDS 5 TO 10 KT  
BECOMING W IN THE AFTERNOON. WAVES 1 FT  
OR LESS. A CHANCE OF SHOWERS.    
MON NIGHT  
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.    
TUE...N WINDS 5 TO 10 KT  
BECOMING S. WAVES 1 FT OR LESS.    
WED...S WINDS 10 TO 15 KT  
BECOMING SW 5 KT AFTER MIDNIGHT. WAVES  
1 FT. A CHANCE OF SHOWERS IN THE MORNING, THEN SHOWERS.  
 
 
 
ANZ539-100800-  
CHESTER RIVER TO QUEENSTOWN MD-  
459 PM EDT SAT MAY 9 2026  
   
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING  
 
   
REST OF THIS AFTERNOON  
S WINDS 10 KT. WAVES 2 FT. ISOLATED  
SHOWERS.    
TONIGHT  
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.    
SUN  
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. SCATTERED SHOWERS.    
SUN NIGHT  
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.  
SHOWERS LIKELY.    
MON...NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT  
BECOMING NW 5 TO  
10 KT IN THE AFTERNOON. WAVES 1 FT. SHOWERS LIKELY.    
MON NIGHT...SW WINDS 5 TO 10 KT  
BECOMING N 10 TO 15 KT AFTER  
MIDNIGHT. WAVES 1 FT.    
TUE...N WINDS 10 TO 15 KT  
BECOMING W AROUND 5 KT IN THE AFTERNOON  
AND EVENING, THEN BECOMING S AFTER MIDNIGHT. WAVES 1 TO 2 FT...  
SUBSIDING TO 1 FT OR LESS.    
WED  
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS IN  
THE AFTERNOON. SHOWERS THROUGH THE NIGHT.  
 
 
 
ANZ532-100800-  
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-  
459 PM EDT SAT MAY 9 2026  
   
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING  
 
   
REST OF THIS AFTERNOON  
S WINDS 15 KT. WAVES 2 FT. ISOLATED  
SHOWERS.    
TONIGHT  
S WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.    
SUN  
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. SCATTERED SHOWERS.    
SUN NIGHT  
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO  
2 FT. SHOWERS LIKELY.    
MON...N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT  
BECOMING NW 5 TO  
10 KT IN THE AFTERNOON. WAVES 1 TO 2 FT. SHOWERS LIKELY.    
MON NIGHT...W WINDS 5 KT  
BECOMING N 10 TO 15 KT AFTER MIDNIGHT.  
WAVES 1 TO 2 FT.    
TUE...N WINDS 10 TO 15 KT  
BECOMING S. WAVES 1 TO 2 FT.    
WED  
S WINDS 15 TO 20 KT. WAVES 2 TO 3 FT. A CHANCE OF SHOWERS IN  
THE AFTERNOON. SHOWERS THROUGH THE NIGHT.  
 
 
 
ANZ540-100800-  
EASTERN BAY-  
459 PM EDT SAT MAY 9 2026  
   
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING  
 
   
REST OF THIS AFTERNOON  
S WINDS 15 KT. WAVES 2 FT. ISOLATED  
SHOWERS.    
TONIGHT  
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.    
SUN  
SW WINDS 5 TO 10 KT. WAVES FLAT. SCATTERED SHOWERS.    
SUN NIGHT  
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.  
SHOWERS LIKELY.    
MON...N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT  
BECOMING NW 5 TO  
10 KT IN THE AFTERNOON. WAVES 1 FT. SHOWERS LIKELY.    
MON NIGHT...W WINDS 5 KT  
BECOMING N 10 TO 15 KT AFTER MIDNIGHT.  
WAVES 1 FT OR LESS.    
TUE...N WINDS 10 TO 15 KT  
BECOMING S 5 TO 10 KT. WAVES 1 FT OR  
LESS.    
WED  
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS IN  
THE AFTERNOON. SHOWERS THROUGH THE NIGHT.  
 
 
 
ANZ533-100800-  
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-  
459 PM EDT SAT MAY 9 2026  
   
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING  
 
   
REST OF THIS AFTERNOON  
S WINDS 15 KT WITH GUSTS TO 20 KT. WAVES  
2 FT. ISOLATED SHOWERS.    
TONIGHT  
S WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.    
SUN...SW WINDS 5 KT  
BECOMING S IN THE AFTERNOON. WAVES 1 FT.    
SUN NIGHT  
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO  
2 FT. SHOWERS LIKELY.    
MON  
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. SHOWERS  
LIKELY.    
MON NIGHT...W WINDS 5 KT  
BECOMING NW 10 TO 15 KT WITH GUSTS TO  
20 KT AFTER MIDNIGHT. WAVES 1 TO 2 FT.    
TUE...N WINDS 10 TO 15 KT  
BECOMING S. WAVES 1 TO 2 FT.    
WED  
S WINDS 15 TO 20 KT. WAVES 2 TO 3 FT. A CHANCE OF SHOWERS IN  
THE AFTERNOON. SHOWERS THROUGH THE NIGHT.  
 
 
 
ANZ541-100800-  
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-  
459 PM EDT SAT MAY 9 2026  
   
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING  
 
   
REST OF THIS AFTERNOON  
S WINDS 15 KT. WAVES 2 FT. ISOLATED  
SHOWERS.    
TONIGHT  
S WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN  
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.    
SUN NIGHT  
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.  
SHOWERS LIKELY.    
MON  
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. SHOWERS  
LIKELY.    
MON NIGHT...W WINDS 5 KT  
BECOMING NW 10 TO 15 KT WITH GUSTS TO  
20 KT AFTER MIDNIGHT. WAVES 1 FT.    
TUE...N WINDS 10 TO 15 KT  
BECOMING S AROUND 5 KT IN THE EVENING,  
THEN INCREASING TO 10 TO 15 KT AFTER MIDNIGHT. WAVES 1 FT OR LESS.    
WED  
S WINDS 15 TO 20 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS IN  
THE AFTERNOON. SHOWERS THROUGH THE NIGHT.  
 
 
 
ANZ542-100800-  
PATUXENT RIVER TO BROOMES ISLAND MD-  
459 PM EDT SAT MAY 9 2026  
   
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING  
 
   
REST OF THIS AFTERNOON  
S WINDS 10 KT. WAVES 1 FT.    
TONIGHT  
S WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN...SW WINDS 5 TO 10 KT  
BECOMING S LATE. WAVES 1 FT.    
SUN NIGHT  
NE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.    
MON  
N WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.    
MON NIGHT  
NW WINDS 5 TO 10 KT. WAVES 1 FT.    
TUE...N WINDS 5 TO 10 KT  
BECOMING S. WAVES 1 FT.    
WED  
S WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF SHOWERS IN THE  
AFTERNOON. SHOWERS THROUGH THE NIGHT.  
 
 
 
ANZ534-100800-  
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-  
459 PM EDT SAT MAY 9 2026  
   
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING  
 
   
REST OF THIS AFTERNOON  
S WINDS 15 KT WITH GUSTS TO 20 KT. WAVES  
3 FT.    
TONIGHT...S WINDS 10 TO 15 KT  
BECOMING SW 5 TO 10 KT LATE. WAVES  
1 TO 2 FT.    
SUN...SW WINDS 5 TO 10 KT  
BECOMING SE LATE. WAVES 1 FT.    
SUN NIGHT...SE WINDS 10 KT  
BECOMING N AFTER MIDNIGHT. GUSTS UP TO  
20 KT. WAVES 1 TO 2 FT. SHOWERS LIKELY.    
MON  
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. SHOWERS  
LIKELY.    
MON NIGHT  
N WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER MIDNIGHT.  
WAVES 1 TO 2 FT.    
TUE...N WINDS 10 TO 15 KT  
BECOMING S. WAVES 1 TO 2 FT.    
WED  
S WINDS 15 TO 20 KT. WAVES 3 FT. A CHANCE OF SHOWERS IN THE  
AFTERNOON. SHOWERS THROUGH THE NIGHT.  
 
 
 
ANZ543-100800-  
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-  
459 PM EDT SAT MAY 9 2026  
   
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING  
 
   
REST OF THIS AFTERNOON  
S WINDS 15 KT WITH GUSTS TO 20 KT. WAVES  
2 FT.    
TONIGHT  
S WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.    
SUN  
SW WINDS 5 TO 10 KT. WAVES 1 FT.    
SUN NIGHT...SE WINDS 5 TO 10 KT  
BECOMING N AFTER MIDNIGHT. WAVES  
1 FT. SHOWERS LIKELY.    
MON  
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. SHOWERS  
LIKELY.    
MON NIGHT  
N WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER MIDNIGHT.  
WAVES 1 FT.    
TUE...N WINDS 10 TO 15 KT...BECOMING S. WAVES 1 TO 2 FT  
SUBSIDING  
TO 1 FT OR LESS.    
WED  
S WINDS 15 TO 20 KT. WAVES 2 FT. SHOWERS THROUGH THE NIGHT.  
 
 
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