041  
FZUS53 KMKX 092010  
NSHMKX  
 
NEARSHORE MARINE FORECAST  
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI  
310 PM CDT SUN AUG 9 2026  
 
FOR WATERS WITHIN FIVE NAUTICAL MILES OF SHORE ON LAKE MICHIGAN  
 
LMZ643-100900-  
SHEBOYGAN TO PORT WASHINGTON WI-  
310 PM CDT SUN AUG 9 2026  
   
THROUGH EARLY EVENING  
SOUTHEAST WIND 10 TO 15 KNOTS VEERING  
SOUTH LATE IN THE AFTERNOON. MOSTLY CLOUDY WITH CHANCE OF SHOWERS  
AND SLIGHT CHANCE OF THUNDERSTORMS. WAVES 1 TO 3 FEET.    
TONIGHT  
SOUTH WIND 5 TO 15 KNOTS BECOMING 5 TO 10 KNOTS LATE  
IN THE EVENING, THEN BECOMING SOUTH 5 TO 10 KNOTS AFTER MIDNIGHT  
VEERING WEST EARLY IN THE MORNING. SLIGHT CHANCE OF SHOWERS  
THROUGH AROUND MIDNIGHT. SLIGHT CHANCE OF THUNDERSTORMS THROUGH  
THE NIGHT. CHANCE OF SHOWERS AFTER MIDNIGHT. PATCHY FOG IN THE  
LATE EVENING AND OVERNIGHT. WAVES 1 TO 2 FEET.    
MONDAY  
NORTHWEST WIND 5 TO 10 KNOTS VEERING EAST LATE IN THE  
AFTERNOON. PATCHY FOG IN THE MORNING. WAVES AROUND 1 FOOT.    
MONDAY NIGHT  
SOUTHEAST WIND 5 TO 10 KNOTS BACKING EAST EARLY  
IN THE MORNING. PATCHY FOG. WAVES AROUND 1 FOOT.    
TUESDAY  
EAST WIND 5 TO 10 KNOTS VEERING SOUTHEAST IN THE LATE  
MORNING AND AFTERNOON. CHANCE OF SHOWERS AND SLIGHT CHANCE OF  
THUNDERSTORMS THROUGH THE DAY. WAVES AROUND 1 FOOT.  
 
 
LMZ644-100900-  
PORT WASHINGTON TO NORTH POINT LIGHT WI-  
310 PM CDT SUN AUG 9 2026  
   
THROUGH EARLY EVENING  
SOUTHEAST WIND 5 TO 10 KNOTS VEERING  
SOUTH LATE IN THE AFTERNOON. MOSTLY CLOUDY WITH A 30 PERCENT  
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 1 TO 2 FEET.    
TONIGHT  
SOUTH WIND 5 TO 10 KNOTS VEERING WEST EARLY IN THE  
MORNING. SLIGHT CHANCE OF SHOWERS THROUGH AROUND MIDNIGHT. CHANCE  
OF THUNDERSTORMS THROUGH THE NIGHT. CHANCE OF SHOWERS AFTER  
MIDNIGHT. PATCHY FOG AFTER MIDNIGHT. WAVES 1 TO 2 FEET.    
MONDAY  
NORTHWEST WIND 5 TO 10 KNOTS VEERING EAST LATE IN THE  
AFTERNOON. PATCHY FOG IN THE MORNING. WAVES AROUND 1 FOOT.    
MONDAY NIGHT  
SOUTHEAST WIND 5 TO 10 KNOTS BACKING EAST AFTER  
MIDNIGHT. PATCHY FOG. WAVES AROUND 1 FOOT.    
TUESDAY  
EAST WIND 5 TO 10 KNOTS VEERING SOUTHEAST IN THE LATE  
MORNING AND AFTERNOON. CHANCE OF SHOWERS AND SLIGHT CHANCE OF  
THUNDERSTORMS. WAVES AROUND 1 FOOT.  
 
 
LMZ645-100900-  
NORTH POINT LIGHT TO WIND POINT WI-  
310 PM CDT SUN AUG 9 2026  
   
THROUGH EARLY EVENING  
SOUTH WIND 5 TO 10 KNOTS RISING TO 10 TO  
15 KNOTS LATE IN THE AFTERNOON. MOSTLY CLOUDY WITH A 30 PERCENT  
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 1 TO 2 FEET.    
TONIGHT  
SOUTH WIND 5 TO 10 KNOTS BACKING SOUTHEAST LATE IN THE  
EVENING, THEN VEERING SOUTH AFTER MIDNIGHT VEERING WEST EARLY IN  
THE MORNING. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE  
EVENING, THEN CHANCE OF SHOWERS AND THUNDERSTORMS IN THE LATE  
EVENING AND EARLY MORNING. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS EARLY IN THE MORNING. PATCHY FOG AFTER MIDNIGHT.  
WAVES 1 TO 2 FEET.    
MONDAY  
NORTHWEST WIND 5 TO 10 KNOTS VEERING EAST LATE IN THE  
AFTERNOON. PATCHY FOG IN THE MORNING. WAVES AROUND 1 FOOT.    
MONDAY NIGHT  
EAST WIND 5 TO 10 KNOTS. PATCHY FOG AFTER  
MIDNIGHT. WAVES AROUND 1 FOOT.    
TUESDAY  
EAST WIND 5 TO 10 KNOTS VEERING SOUTHEAST LATE IN THE  
MORNING, THEN BACKING EAST EARLY IN THE AFTERNOON VEERING  
SOUTHEAST LATE IN THE AFTERNOON. CHANCE OF SHOWERS AND SLIGHT  
CHANCE OF THUNDERSTORMS. WAVES AROUND 1 FOOT.  
 
 
LMZ646-100900-  
WIND POINT WI TO WINTHROP HARBOR IL-  
310 PM CDT SUN AUG 9 2026  
   
THROUGH EARLY EVENING  
SOUTH WIND 5 TO 10 KNOTS. MOSTLY CLOUDY  
WITH A 40 PERCENT CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 1 TO  
2 FEET.    
TONIGHT  
SOUTH WIND 5 TO 10 KNOTS BACKING SOUTHEAST LATE IN THE  
EVENING, THEN VEERING SOUTH AFTER MIDNIGHT VEERING WEST EARLY IN  
THE MORNING. CHANCE OF SHOWERS AND THUNDERSTORMS UNTIL EARLY  
MORNING, THEN SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS EARLY IN  
THE MORNING. WAVES 1 TO 2 FEET.    
MONDAY  
NORTHWEST WIND 5 TO 10 KNOTS VEERING EAST LATE IN THE  
AFTERNOON. PATCHY FOG IN THE MORNING. SLIGHT CHANCE OF SHOWERS  
AND THUNDERSTORMS IN THE AFTERNOON. WAVES AROUND 1 FOOT.    
MONDAY NIGHT  
EAST WIND 5 TO 10 KNOTS. SLIGHT CHANCE OF SHOWERS  
AND THUNDERSTORMS THROUGH AROUND MIDNIGHT. PATCHY FOG AFTER  
MIDNIGHT. WAVES AROUND 1 FOOT.    
TUESDAY  
EAST WIND 5 TO 10 KNOTS VEERING SOUTHEAST LATE IN THE  
AFTERNOON. CHANCE OF SHOWERS AND THUNDERSTORMS THROUGH THE DAY.  
WAVES AROUND 1 FOOT.  
 
 
SEE LAKE MICHIGAN OPEN WATERS FORECAST FOR WEDNESDAY THROUGH FRIDAY.  
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