813  
FZUS53 KGRB 211653  
NSHGRB  
 
NEARSHORE MARINE FORECAST  
NATIONAL WEATHER SERVICE GREEN BAY WI  
1153 AM CDT SUN SEP 21 2025  
 
FOR WATERS WITHIN FIVE NAUTICAL MILES OF THE SHORE ON LAKE MICHIGAN  
 
LMZ521-522-220200-  
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-  
1153 AM CDT SUN SEP 21 2025  
   
THIS AFTERNOON
 
S WIND 5 TO 10 KTS. A CHANCE OF LIGHT SHOWERS  
AND A SLIGHT CHANCE OF THUNDERSTORMS. WAVES 2 FT OR LESS.    
TONIGHT
 
S WIND AROUND 5 KTS VEERING SW AFTER MIDNIGHT. A  
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING. A SLIGHT CHANCE OF  
LIGHT SHOWERS. PATCHY FOG AFTER MIDNIGHT. WAVES 2 FT OR LESS.    
MONDAY
 
SW WIND AROUND 5 KTS BACKING S IN THE AFTERNOON. A  
CHANCE OF LIGHT SHOWERS. A CHANCE OF THUNDERSTORMS IN THE  
AFTERNOON. WAVES 2 FT OR LESS.    
MONDAY NIGHT
 
SE WIND AROUND 5 KTS BACKING NE AFTER MIDNIGHT. A  
CHANCE OF LIGHT SHOWERS IN THE EVENING. WAVES 2 FT OR LESS.  
 

 
 
LMZ541-220200-  
ROCK ISLAND PASSAGE TO STURGEON BAY WI-  
1153 AM CDT SUN SEP 21 2025  
   
THIS AFTERNOON
 
S WIND 5 TO 10 KTS. A CHANCE OF LIGHT SHOWERS  
AND A SLIGHT CHANCE OF THUNDERSTORMS. WAVES 1 TO 3 FT.    
TONIGHT
 
S WIND AROUND 5 KTS VEERING SW AFTER MIDNIGHT. PATCHY  
FOG. A SLIGHT CHANCE OF LIGHT SHOWERS AND THUNDERSTORMS. WAVES  
2 FT OR LESS.    
MONDAY
 
SW WIND AROUND 5 KTS BACKING S IN THE AFTERNOON. A  
CHANCE OF LIGHT SHOWERS. A CHANCE OF THUNDERSTORMS IN THE  
AFTERNOON. WAVES 2 FT OR LESS.    
MONDAY NIGHT
 
S WIND AROUND 5 KTS BACKING NE AFTER MIDNIGHT. A  
CHANCE OF LIGHT SHOWERS AND THUNDERSTORMS IN THE EVENING. WAVES  
2 FT OR LESS.  
 

 
 
LMZ542-543-220200-  
STURGEON BAY TO TWO RIVERS WI-TWO RIVERS TO SHEBOYGAN WI-  
1153 AM CDT SUN SEP 21 2025  
   
THIS AFTERNOON
 
S WIND 5 TO 10 KTS. A CHANCE OF LIGHT SHOWERS  
AND A SLIGHT CHANCE OF THUNDERSTORMS. WAVES 1 TO 3 FT.    
TONIGHT
 
S WIND 5 TO 10 KTS VEERING W AFTER MIDNIGHT. A SLIGHT  
CHANCE OF THUNDERSTORMS IN THE EVENING. A SLIGHT CHANCE OF LIGHT  
SHOWERS. PATCHY FOG AFTER MIDNIGHT. WAVES 2 FT OR LESS.    
MONDAY
 
SW WIND AROUND 5 KTS BACKING S IN THE AFTERNOON. A  
CHANCE OF SHOWERS. A CHANCE OF THUNDERSTORMS IN THE AFTERNOON.  
WAVES 2 FT OR LESS.    
MONDAY NIGHT
 
S WIND AROUND 5 KTS BACKING N AFTER MIDNIGHT. A  
CHANCE OF LIGHT SHOWERS AND THUNDERSTORMS IN THE EVENING. WAVES  
2 FT OR LESS.  
 

 
 
SEE LAKE MICHIGAN OPEN LAKE FORECAST FOR TUESDAY THROUGH THURSDAY.  
 
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