212  
FZUS53 KGRB 231756  
NSHGRB  
 
NEARSHORE MARINE FORECAST  
NATIONAL WEATHER SERVICE GREEN BAY WI  
1256 PM CDT THU APR 23 2026  
 
FOR WATERS WITHIN FIVE NAUTICAL MILES OF SHORE ON LAKE MICHIGAN  
 
LMZ521-522-232200-  
GREEN BAY SOUTH OF LINE FROM CEDAR RIVER TO ROCK ISLAND PASSAGE  
AND NORTH OF A LINE FROM OCONTO WI TO LITTLE STURGEON BAY WI-  
GREEN BAY SOUTH OF LINE FROM OCONTO WI TO LITTLE STURGEON BAY WI-  
1256 PM CDT THU APR 23 2026  
   
THIS AFTERNOON
 
S WIND 10 TO 15 KTS. WAVES 1 TO 3 FT. MOSTLY  
SUNNY.    
TONIGHT
 
SE WIND 10 TO 15 KTS. WAVES 1 TO 3 FT. A CHANCE OF  
SHOWERS AND THUNDERSTORMS.    
FRIDAY
 
SE WIND 10 TO 15 KTS BACKING N EARLY IN THE AFTERNOON.  
WAVES 2 FT OR LESS. RAIN SHOWERS IN THE MORNING. A CHANCE OF  
SHOWERS IN THE AFTERNOON.    
FRIDAY NIGHT
 
N WIND 10 TO 15 KTS. WAVES 2 FT OR LESS. A CHANCE  
OF SHOWERS.  
 

 
 
LMZ541-232200-  
ROCK ISLAND PASSAGE TO STURGEON BAY WI-  
1256 PM CDT THU APR 23 2026  
 
...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM CDT THIS EVENING  
THROUGH FRIDAY EVENING...  
   
THIS AFTERNOON
 
S WIND 10 TO 15 KTS. WAVES 1 TO 3 FT BUILDING  
TO 2 TO 4 FT IN THE AFTERNOON. PATCHY FOG IN THE AFTERNOON.    
TONIGHT
 
SE WIND 10 TO 15 KTS. WAVES 4 TO 7 FT. PATCHY FOG IN  
THE EVENING. A CHANCE OF SHOWERS AND A SLIGHT CHANCE OF  
THUNDERSTORMS AFTER MIDNIGHT.    
FRIDAY
 
SE WIND 10 TO 15 KTS BACKING N EARLY IN THE AFTERNOON.  
WAVES 4 TO 7 FT. RAIN SHOWERS AND A CHANCE OF THUNDERSTORMS.    
FRIDAY NIGHT
 
N WIND 10 TO 15 KTS. WAVES 2 TO 4 FT. A CHANCE OF  
SHOWERS.  
 

 
 
LMZ542-543-232200-  
STURGEON BAY TO TWO RIVERS WI-TWO RIVERS TO SHEBOYGAN WI-  
1256 PM CDT THU APR 23 2026  
 
...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM CDT THIS AFTERNOON  
THROUGH FRIDAY EVENING...  
   
THIS AFTERNOON
 
S WIND 10 TO 20 KTS. WAVES 1 TO 3 FT BUILDING  
TO 3 TO 5 FT IN THE AFTERNOON. PATCHY FOG IN THE AFTERNOON.    
TONIGHT
 
S WIND 10 TO 20 KTS. WAVES 4 TO 7 FT. PATCHY FOG IN  
THE EVENING. A SLIGHT CHANCE OF SHOWERS IN THE EVENING. A CHANCE  
OF THUNDERSTORMS. RAIN SHOWERS LIKELY AFTER MIDNIGHT.    
FRIDAY
 
S WIND 10 TO 20 KTS VEERING NW 10 TO 15 KTS EARLY IN  
THE AFTERNOON. WAVES 4 TO 7 FT. RAIN SHOWERS.    
FRIDAY NIGHT
 
N WIND 10 TO 15 KTS. WAVES 2 TO 4 FT SUBSIDING TO  
1 TO 3 FT AFTER MIDNIGHT. PARTLY CLOUDY.  
 

 
 
SEE LAKE MICHIGAN OPEN LAKE FORECAST FOR SATURDAY THROUGH MONDAY.  
 
WAVE HEIGHT FORECAST IS FOR ICE FREE AREAS.  
 
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