250  
FZUS53 KGRB 192035  
NSHGRB  
 
NEARSHORE MARINE FORECAST  
NATIONAL WEATHER SERVICE GREEN BAY WI  
335 PM CDT SUN APR 19 2026  
 
FOR WATERS WITHIN FIVE NAUTICAL MILES OF SHORE ON LAKE MICHIGAN  
 
LMZ521-522-200400-  
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-  
335 PM CDT SUN APR 19 2026  
   
LATE THIS AFTERNOON  
N WIND 10 TO 15 KTS. WAVES 1 TO 3 FT.  
PARTLY SUNNY.    
TONIGHT  
N WIND 5 TO 10 KTS BACKING NW AFTER MIDNIGHT. WAVES  
1 TO 3 FT. MOSTLY CLEAR.    
MONDAY  
W WIND 5 TO 10 KTS BACKING S 10 TO 20 KTS IN THE LATE  
MORNING AND AFTERNOON. WAVES 1 TO 3 FT. SUNNY IN THE MORNING THEN  
BECOMING PARTLY CLOUDY.    
MONDAY NIGHT  
S WIND 15 TO 25 KTS DECREASING TO 10 TO 15 KTS  
AFTER MIDNIGHT. WAVES 2 TO 4 FT. MOSTLY CLOUDY IN THE EVENING  
THEN BECOMING PARTLY CLOUDY. A SMALL CRAFT ADVISORY MAY BE  
NEEDED.    
TUESDAY  
SW WIND 5 TO 10 KTS BACKING E EARLY IN THE AFTERNOON.  
WAVES 2 FT OR LESS. SUNNY.  
 
 
 
LMZ541-200400-  
ROCK ISLAND PASSAGE TO STURGEON BAY WI-  
335 PM CDT SUN APR 19 2026  
   
LATE THIS AFTERNOON  
N WIND 10 TO 15 KTS. WAVES 2 FT OR LESS.  
PARTLY SUNNY.    
TONIGHT  
N WIND 10 TO 15 KTS BACKING NW 5 TO 10 KTS AFTER  
MIDNIGHT. WAVES 2 FT OR LESS. MOSTLY CLEAR.    
MONDAY  
W WIND 5 TO 10 KTS BACKING SW 10 TO 15 KTS MID-DAY,  
THEN BACKING S 15 TO 25 KTS EARLY IN THE AFTERNOON. WAVES 2 FT OR  
LESS BUILDING TO 3 TO 5 FT IN THE AFTERNOON. SUNNY IN THE MORNING  
THEN BECOMING PARTLY SUNNY. A SMALL CRAFT ADVISORY MAY BE NEEDED.   
MONDAY NIGHT  
S WIND TO 30 KTS DECREASING TO 10 TO 20 KTS AFTER  
MIDNIGHT. WAVES 5 TO 8 FT. MOSTLY CLOUDY IN THE EVENING THEN  
BECOMING PARTLY CLOUDY.    
TUESDAY  
S WIND 10 TO 15 KTS BACKING SE 5 TO 10 KTS EARLY IN  
THE AFTERNOON. WAVES 4 TO 7 FT SUBSIDING TO 3 TO 5 FT IN THE  
AFTERNOON. SUNNY. A SMALL CRAFT ADVISORY MAY BE NEEDED.  
 
 
 
LMZ542-543-200400-  
STURGEON BAY TO TWO RIVERS WI-TWO RIVERS TO SHEBOYGAN WI-  
335 PM CDT SUN APR 19 2026  
   
LATE THIS AFTERNOON  
NE WIND 10 TO 15 KTS. WAVES 2 FT OR LESS.  
MOSTLY CLOUDY.    
TONIGHT  
N WIND 10 TO 15 KTS BACKING NW 5 TO 10 KTS AFTER  
MIDNIGHT. WAVES 2 FT OR LESS. PARTLY CLOUDY IN THE EVENING THEN  
CLEARING.    
MONDAY  
SW WIND 5 TO 10 KTS BACKING S 10 TO 15 KTS MID-DAY,  
THEN INCREASING TO 15 TO 25 KTS EARLY IN THE AFTERNOON. WAVES  
2 FT OR LESS BUILDING TO 3 TO 5 FT IN THE AFTERNOON. SUNNY IN THE  
MORNING THEN BECOMING PARTLY CLOUDY.    
MONDAY NIGHT  
S WIND TO 30 KTS DECREASING TO 10 TO 20 KTS AFTER  
MIDNIGHT. WAVES 4 TO 7 FT. MOSTLY CLOUDY IN THE EVENING THEN  
BECOMING PARTLY CLOUDY.    
TUESDAY  
S WIND 10 TO 15 KTS BACKING SE 5 TO 10 KTS EARLY IN  
THE AFTERNOON. WAVES 4 TO 7 FT SUBSIDING TO 3 TO 5 FT IN THE  
AFTERNOON. SUNNY. A SMALL CRAFT ADVISORY MAY BE NEEDED.  
 
 
 
SEE LAKE MICHIGAN OPEN LAKE FORECAST FOR WEDNESDAY THROUGH FRIDAY.  
 
WAVE HEIGHT FORECAST IS FOR ICE FREE AREAS.  
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