521  
FZUS53 KGRB 170632  
NSHGRB  
 
NEARSHORE MARINE FORECAST  
NATIONAL WEATHER SERVICE GREEN BAY WI  
132 AM CDT WED SEP 17 2025  
 
FOR WATERS WITHIN FIVE NAUTICAL MILES OF THE SHORE ON LAKE MICHIGAN  
 
LMZ521-522-171300-  
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-  
132 AM CDT WED SEP 17 2025  
   
OVERNIGHT
 
SW WIND 5 TO 10 KTS. MOSTLY CLEAR. WAVES 2 FT OR  
LESS.    
TODAY
 
S WIND 5 TO 10 KTS. A SLIGHT CHANCE OF LIGHT SHOWERS AND  
THUNDERSTORMS IN THE AFTERNOON. WAVES 2 FT OR LESS.    
TONIGHT
 
NE WIND 5 TO 10 KTS. MOSTLY CLOUDY. WAVES 2 FT OR  
LESS.    
THURSDAY
 
NE WIND 5 TO 10 KTS. PARTLY CLOUDY. WAVES 2 FT OR  
LESS.  
 

 
 
LMZ541-171300-  
ROCK ISLAND PASSAGE TO STURGEON BAY WI-  
132 AM CDT WED SEP 17 2025  
   
OVERNIGHT
 
S WIND 5 TO 10 KTS. MOSTLY CLEAR. WAVES 2 FT OR  
LESS.    
TODAY
 
S WIND 5 TO 10 KTS. A SLIGHT CHANCE OF LIGHT SHOWERS AND  
THUNDERSTORMS IN THE AFTERNOON. WAVES 2 FT OR LESS.    
TONIGHT
 
NE WIND 5 TO 10 KTS. MOSTLY CLOUDY. WAVES 2 FT OR  
LESS.    
THURSDAY
 
NE WIND 5 TO 10 KTS. PARTLY CLOUDY. WAVES 2 FT OR  
LESS.  
 

 
 
LMZ542-543-171300-  
STURGEON BAY TO TWO RIVERS WI-TWO RIVERS TO SHEBOYGAN WI-  
132 AM CDT WED SEP 17 2025  
   
OVERNIGHT
 
SW WIND AROUND 5 KTS. PATCHY FOG. WAVES 2 FT OR  
LESS.    
TODAY
 
S WIND 5 TO 10 KTS. PATCHY DENSE FOG IN THE MORNING.  
WAVES 2 FT OR LESS.    
TONIGHT
 
SW WIND 5 TO 10 KTS VEERING NE AFTER MIDNIGHT. PARTLY  
CLOUDY. WAVES 2 FT OR LESS.    
THURSDAY
 
NE WIND 10 TO 15 KTS. PARTLY CLOUDY. WAVES 2 FT OR  
LESS.  
 

 
 
SEE LAKE MICHIGAN OPEN LAKE FORECAST FOR FRIDAY THROUGH SUNDAY.  
 
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