201  
FZUS53 KGRB 231025  
NSHGRB  
 
NEARSHORE MARINE FORECAST  
NATIONAL WEATHER SERVICE GREEN BAY WI  
525 AM CDT THU APR 23 2026  
 
FOR WATERS WITHIN FIVE NAUTICAL MILES OF SHORE ON LAKE MICHIGAN  
 
LMZ521-522-231600-  
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-  
525 AM CDT THU APR 23 2026  
   
EARLY THIS MORNING
 
SE WIND 5 TO 10 KTS. WAVES 2 FT OR LESS.  
PARTLY CLOUDY.    
TODAY
 
SE WIND 10 TO 20 KTS. WAVES 1 TO 3 FT. PARTLY CLOUDY.    
TONIGHT
 
SE WIND 10 TO 15 KTS. WAVES 1 TO 3 FT. A CHANCE OF  
SHOWERS IN THE EVENING. A CHANCE OF THUNDERSTORMS. RAIN SHOWERS  
LIKELY AFTER MIDNIGHT.    
FRIDAY
 
SE WIND 10 TO 15 KTS BACKING N EARLY IN THE AFTERNOON.  
WAVES 2 FT OR LESS. RAIN SHOWERS AND A CHANCE OF THUNDERSTORMS.    
FRIDAY NIGHT
 
N WIND 10 TO 15 KTS. WAVES 2 FT OR LESS. A CHANCE  
OF SHOWERS.  
 

 
 
LMZ541-231600-  
ROCK ISLAND PASSAGE TO STURGEON BAY WI-  
525 AM CDT THU APR 23 2026  
 
...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH  
FRIDAY EVENING...  
   
EARLY THIS MORNING
 
SE WIND 10 TO 15 KTS. WAVES 1 TO 3 FT.  
PARTLY CLOUDY.    
TODAY
 
S WIND 10 TO 15 KTS. WAVES 2 TO 4 FT. PATCHY FOG IN THE  
AFTERNOON.    
TONIGHT
 
SE WIND 15 TO 25 KTS. WAVES 3 TO 5 FT. PATCHY FOG IN  
THE EVENING. A CHANCE OF SHOWERS AFTER MIDNIGHT.    
FRIDAY
 
SE WIND 10 TO 20 KTS BACKING N 10 TO 15 KTS 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.  
 

 
 
LMZ542-543-231600-  
STURGEON BAY TO TWO RIVERS WI-TWO RIVERS TO SHEBOYGAN WI-  
525 AM CDT THU APR 23 2026  
 
...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM CDT THIS AFTERNOON  
THROUGH FRIDAY EVENING...  
   
EARLY THIS MORNING
 
S WIND 5 TO 10 KTS. WAVES 2 FT OR LESS.  
MOSTLY CLEAR.    
TODAY
 
S WIND 10 TO 20 KTS. WAVES 2 TO 4 FT BUILDING TO 3 TO  
5 FT IN THE AFTERNOON. PATCHY FOG IN THE AFTERNOON.    
TONIGHT
 
S WIND 15 TO 25 KTS. WAVES 4 TO 7 FT. PATCHY FOG IN  
THE EVENING. A CHANCE OF SHOWERS AND THUNDERSTORMS.    
FRIDAY
 
S WIND 10 TO 20 KTS VEERING W 10 TO 15 KTS 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 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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