739  
FZUS53 KMKX 200005  
NSHMKX  
 
NEARSHORE MARINE FORECAST  
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI  
705 PM CDT TUE AUG 19 2025  
 
FOR WATERS WITHIN FIVE NAUTICAL MILES OF SHORE ON LAKE MICHIGAN  
 
LMZ643-200400-  
SHEBOYGAN TO PORT WASHINGTON WI-  
705 PM CDT TUE AUG 19 2025  
   
TONIGHT  
NORTHEAST WIND 10 TO 15 KNOTS BACKING NORTH EARLY IN  
THE MORNING. SLIGHT CHANCE OF SPRINKLES IN THE LATE EVENING AND  
OVERNIGHT. WAVES 1 TO 2 FEET.    
WEDNESDAY  
NORTH WIND 10 TO 15 KNOTS VEERING NORTHEAST WITH  
GUSTS TO AROUND 20 KNOTS IN THE LATE MORNING AND EARLY AFTERNOON,  
THEN RISING TO 15 TO 20 KNOTS LATE IN THE AFTERNOON. SLIGHT  
CHANCE OF SPRINKLES. WAVES 1 TO 3 FEET BUILDING TO 2 TO 4 FEET IN  
THE LATE MORNING AND AFTERNOON.    
WEDNESDAY NIGHT  
NORTH WIND 15 TO 20 KNOTS VEERING NORTHEAST  
LATE IN THE EVENING, THEN EASING TO 10 TO 15 KNOTS AFTER MIDNIGHT  
BECOMING NORTHEAST 10 TO 15 KNOTS EARLY IN THE MORNING. MOSTLY  
CLEAR. WAVES 3 TO 4 FEET.    
THURSDAY  
NORTHEAST WIND 5 TO 10 KNOTS. SUNNY. WAVES 1 TO  
2 FEET.  
 
 
LMZ644-200400-  
PORT WASHINGTON TO NORTH POINT LIGHT WI-  
705 PM CDT TUE AUG 19 2025  
 
...SMALL CRAFT ADVISORY IN EFFECT FROM 7 AM CDT WEDNESDAY THROUGH  
LATE WEDNESDAY NIGHT...  
   
TONIGHT  
NORTHEAST WIND 10 TO 15 KNOTS EASING TO 5 TO 10 KNOTS  
LATE IN THE EVENING, THEN BACKING NORTH AFTER MIDNIGHT RISING TO  
10 TO 15 KNOTS EARLY IN THE MORNING. SLIGHT CHANCE OF SPRINKLES  
IN THE LATE EVENING AND OVERNIGHT. WAVES 1 TO 2 FEET.    
WEDNESDAY  
NORTH WIND 10 TO 15 KNOTS VEERING NORTHEAST WITH  
GUSTS TO AROUND 20 KNOTS IN THE LATE MORNING AND EARLY AFTERNOON,  
THEN RISING TO 15 TO 20 KNOTS LATE IN THE AFTERNOON. SLIGHT  
CHANCE OF SPRINKLES. WAVES 3 TO 4 FEET.    
WEDNESDAY NIGHT  
NORTH WIND 15 TO 20 KNOTS VEERING NORTHEAST  
AFTER MIDNIGHT, THEN EASING TO 10 TO 15 KNOTS EARLY IN THE  
MORNING. MOSTLY CLEAR. WAVES 3 TO 4 FEET BUILDING TO 3 TO 5 FEET  
LATE IN THE EVENING, THEN SUBSIDING TO 3 TO 4 FEET AFTER  
MIDNIGHT.    
THURSDAY  
NORTHEAST WIND 5 TO 10 KNOTS. SUNNY. WAVES 2 TO  
4 FEET SUBSIDING TO 1 TO 2 FEET IN THE LATE MORNING AND  
AFTERNOON.  
 
 
LMZ645-200400-  
NORTH POINT LIGHT TO WIND POINT WI-  
705 PM CDT TUE AUG 19 2025  
 
...SMALL CRAFT ADVISORY IN EFFECT FROM 7 AM CDT WEDNESDAY THROUGH  
LATE WEDNESDAY NIGHT...  
   
TONIGHT  
NORTH WIND 10 TO 15 KNOTS. SLIGHT CHANCE OF SPRINKLES  
IN THE LATE EVENING AND OVERNIGHT. WAVES 1 TO 3 FEET.    
WEDNESDAY  
NORTH WIND 10 TO 15 KNOTS VEERING NORTHEAST WITH  
GUSTS TO AROUND 20 KNOTS LATE IN THE MORNING, THEN RISING TO  
15 TO 20 KNOTS EARLY IN THE AFTERNOON BACKING NORTH LATE IN THE  
AFTERNOON. SLIGHT CHANCE OF SPRINKLES. WAVES 3 TO 4 FEET.    
WEDNESDAY NIGHT  
NORTH WIND 15 TO 20 KNOTS VEERING NORTHEAST  
AFTER MIDNIGHT, THEN EASING TO 10 TO 15 KNOTS EARLY IN THE  
MORNING. MOSTLY CLEAR. WAVES 4 TO 6 FEET SUBSIDING TO 3 TO 4 FEET  
EARLY IN THE MORNING.    
THURSDAY  
NORTHEAST WIND 10 TO 15 KNOTS EASING TO 5 TO 10 KNOTS  
EARLY IN THE AFTERNOON, THEN BECOMING NORTHEAST 5 TO 10 KNOTS  
LATE IN THE AFTERNOON. SUNNY. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO  
2 FEET IN THE AFTERNOON.  
 
 
LMZ646-200400-  
WIND POINT WI TO WINTHROP HARBOR IL-  
705 PM CDT TUE AUG 19 2025  
 
...SMALL CRAFT ADVISORY IN EFFECT FROM 7 AM CDT WEDNESDAY THROUGH  
LATE WEDNESDAY NIGHT...  
   
TONIGHT  
NORTH WIND 10 TO 15 KNOTS. SLIGHT CHANCE OF SPRINKLES  
IN THE LATE EVENING AND OVERNIGHT. WAVES 1 TO 3 FEET.    
WEDNESDAY  
NORTH WIND 10 TO 15 KNOTS VEERING NORTHEAST WITH  
GUSTS TO AROUND 20 KNOTS LATE IN THE MORNING, THEN RISING TO  
15 TO 20 KNOTS EARLY IN THE AFTERNOON BACKING NORTH LATE IN THE  
AFTERNOON. SLIGHT CHANCE OF SPRINKLES. WAVES 3 TO 4 FEET.    
WEDNESDAY NIGHT  
NORTH WIND 15 TO 20 KNOTS VEERING NORTHEAST  
AFTER MIDNIGHT, THEN EASING TO 10 TO 15 KNOTS EARLY IN THE  
MORNING. MOSTLY CLEAR. WAVES 3 TO 5 FEET BUILDING TO 4 TO 6 FEET  
IN THE LATE EVENING AND EARLY MORNING, THEN SUBSIDING TO 3 TO  
4 FEET EARLY IN THE MORNING.    
THURSDAY  
NORTHEAST WIND 10 TO 15 KNOTS EASING TO 5 TO 10 KNOTS  
LATE IN THE AFTERNOON. SUNNY. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO  
3 FEET IN THE AFTERNOON.  
 
 
SEE LAKE MICHIGAN OPEN WATERS FORECAST FOR FRIDAY THROUGH SUNDAY.  
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