291  
FZUS63 KMKX 200200  
GLFLM  
 
OPEN LAKE FORECAST FOR LAKE MICHIGAN  
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI  
900 PM CDT FRI AUG 19 2022  
 
FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE MICHIGAN.  
 
WAVES ARE PROVIDED AS A RANGE OF SIGNIFICANT WAVE HEIGHTS, WHICH  
IS THE AVERAGE OF THE HIGHEST 1/3 OF THE WAVE, ALONG WITH THE  
AVERAGE HEIGHT OF THE HIGHEST 10% OF THE WAVES WHICH WILL  
OCCASIONALLY BE ENCOUNTERED.  
   
SYNOPSIS
 
 
LOW PRESSURE OF 29.9 INCHES OVER FAR NORTHERN IOWA WILL MOVE TO  
FAR SOUTHERN LAKE MICHIGAN BY EARLY SUNDAY MORNING. MODEST  
SOUTHERLY WINDS WILL CONTINUE OVER THE LAKE TONIGHT AND SATURDAY  
THEN BACKING TO NORTHEASTERLY SATURDAY NIGHT FOR NORTHERN AND  
CENTRAL LAKE MICHIGAN. LIGHT AND VARIABLE WINDS ARE EXPECTED OVER  
FAR SOUTHERN LAKE MICHIGAN SATURDAY NIGHT AS THE LOW PASSES  
THROUGH. MODEST NORTHERLY WINDS ARE THEN EXPECTED OVER ALL THE  
LAKE FOR SUNDAY INTO MONDAY.  
 
LMZ261-362-364-366-563-565-567-868-200930-  
LAKE MICHIGAN FROM SEUL CHOIX POINT TO ROCK ISLAND PASSAGE 5 NM  
OFFSHORE TO MID LAKE-  
LAKE MICHIGAN SOUTH OF A LINE FROM SEUL CHOIX POINT TO THE  
MACKINAC BRIDGE AND NORTH OF A LINE FROM CHARLEVOIX MI TO SOUTH  
FOX ISLAND 5 NM OFFSHORE-  
LAKE MICHIGAN FROM CHARLEVOIX TO POINT BETSIE MI 5 NM OFFSHORE TO  
MID LAKE-  
LAKE MICHIGAN FROM POINT BETSIE TO MANISTEE MI 5 NM OFFSHORE TO  
MID LAKE-  
LAKE MICHIGAN FROM ROCK ISLAND PASSAGE TO STURGEON BAY WI-  
LAKE MICHIGAN FROM STURGEON BAY TO TWO RIVERS WI 5 NM OFFSHORE TO  
MID LAKE-  
LAKE MICHIGAN FROM TWO RIVERS TO SHEBOYGAN WI 5 NM OFFSHORE TO  
MID LAKE-  
LAKE MICHIGAN FROM PENTWATER TO MANISTEE MI 5 NM OFFSHORE TO MID  
LAKE-  
900 PM CDT FRI AUG 19 2022  
 
SHEBOYGAN WI TO PENTWATER MI NORTH...  
   
REST OF TONIGHT
 
SOUTH WINDS 10 TO 20 KT DIMINISHING TO 10 TO  
15 KT. CHANCE OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS  
OVERNIGHT. WAVES 2 TO 4 FT.    
SATURDAY
 
SOUTH WINDS 10 TO 15 KT. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. WAVES 1 TO 3 FT.    
SATURDAY NIGHT
 
SOUTHEAST WINDS 5 TO 10 KT BACKING TO NORTH.  
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE EVENING. PATCHY FOG  
OVERNIGHT. WAVES 1 TO 2 FT.    
SUNDAY
 
NORTH WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.  
WAVES 1 TO 3 FT.    
SUNDAY NIGHT
 
NORTH WINDS 10 TO 20 KT DIMINISHING TO 10 TO  
15 KT. WAVES 1 TO 3 FT.    
MONDAY
 
NORTH WINDS 10 TO 15 KT BECOMING NORTHWEST. WAVES 1 TO  
2 FT.    
MONDAY NIGHT
 
NORTHWEST WINDS 10 TO 15 KT BECOMING NORTH 5 TO  
10 KT. WAVES 1 TO 2 FT.    
TUESDAY
 
NORTH WINDS 5 TO 10 KT BECOMING WEST. WAVES NEARLY  
CALM.    
WEDNESDAY
 
SOUTHWEST WINDS 5 TO 10 KT INCREASING TO 10 TO  
15 KT. WAVES NEARLY CALM.  
 

 
 
LMZ080-669-671-673-675-777-779-870-872-874-876-878-200930-  
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 5 NM  
OFFSHORE TO MID LAKE-  
LAKE MICHIGAN FROM SHEBOYGAN TO PORT WASHINGTON WI 5 NM OFFSHORE  
TO MID LAKE-  
LAKE MICHIGAN FROM PORT WASHINGTON TO NORTH POINT LIGHT WI 5 NM  
OFFSHORE TO MID LAKE-  
LAKE MICHIGAN FROM NORTH POINT LIGHT TO WIND POINT WI 5 NM  
OFFSHORE TO MID LAKE-  
LAKE MICHIGAN FROM WIND POINT WI TO WINTHROP HARBOR IL 5 NM  
OFFSHORE TO MID LAKE-  
LAKE MICHIGAN FROM WINTHROP HARBOR TO WILMETTE HARBOR IL 5 NM  
OFFSHORE TO MID LAKE-  
LAKE MICHIGAN FROM WILMETTE HARBOR IL TO MICHIGAN CITY IN 5 NM  
OFFSHORE TO MID LAKE-  
LAKE MICHIGAN FROM WHITEHALL TO PENTWATER MI 5 NM OFFSHORE TO MID  
LAKE-  
LAKE MICHIGAN FROM GRAND HAVEN TO WHITEHALL MI 5 NM OFFSHORE TO  
MID LAKE-  
LAKE MICHIGAN FROM HOLLAND TO GRAND HAVEN MI 5 NM OFFSHORE TO MID  
LAKE-  
LAKE MICHIGAN FROM SOUTH HAVEN TO HOLLAND MI 5 NM OFFSHORE TO MID  
LAKE-  
LAKE MICHIGAN FROM ST. JOSEPH TO SOUTH HAVEN MI 5 NM OFFSHORE TO  
MID LAKE-  
900 PM CDT FRI AUG 19 2022  
 
SHEBOYGAN WI TO PENTWATER MI SOUTH...  
   
REST OF TONIGHT
 
SOUTHEAST WINDS 10 TO 20 KT BECOMING SOUTH  
10 TO 15 KT. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS THROUGH  
EARLY EVENING, THEN CHANCE OF SHOWERS AND THUNDERSTORMS  
OVERNIGHT. WAVES 1 TO 3 FT.    
SATURDAY
 
SOUTH WINDS 10 TO 20 KT DIMINISHING TO 10 TO 15 KT.  
CHANCE OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN THE  
MORNING, THEN CHANCE OF SHOWERS AND THUNDERSTORMS IN THE  
AFTERNOON. WAVES 1 TO 3 FT.    
SATURDAY NIGHT
 
SOUTH WINDS 5 TO 10 KT BACKING TO EAST 10 TO  
15 KT. CHANCE OF SHOWERS AND THUNDERSTORMS. PATCHY FOG OVERNIGHT.  
WAVES 1 TO 2 FT.    
SUNDAY
 
NORTH WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.  
CHANCE OF SHOWERS. WAVES 1 TO 3 FT.    
SUNDAY NIGHT
 
NORTH WINDS 10 TO 20 KT DIMINISHING TO 10 TO  
15 KT. WAVES 1 TO 3 FT.    
MONDAY
 
NORTH WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.  
WAVES 1 TO 3 FT.    
MONDAY NIGHT
 
NORTH WINDS 10 TO 15 KT BECOMING NORTHWEST 5 TO  
10 KT. WAVES 1 TO 3 FT.    
TUESDAY
 
NORTH WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.    
WEDNESDAY
 
SOUTHWEST WINDS 5 TO 10 KT BECOMING SOUTH 10 TO  
15 KT. WAVES NEARLY CALM.  
 

 
 
LMZ761-200930-  
MAFOR 2004/  
MICHIGAN NORTH 15410 11400 11200. A CHANCE OF SHOWERS OVERNIGHT.  
A CHANCE OF SHOWERS AND THUNDERSTORMS SATURDAY EVENING. WAVES 1  
TO 3 FT.  
 
MICHIGAN SOUTH 16410. A CHANCE OF SHOWERS AND THUNDERSTORMS  
OVERNIGHT. A CHANCE OF SHOWERS SATURDAY MORNING, THEN A CHANCE OF  
SHOWERS AND THUNDERSTORMS SATURDAY AFTERNOON. A CHANCE OF SHOWERS  
AND THUNDERSTORMS SATURDAY EVENING. WAVES 1 TO 3 FT.  
 

 
 
GEHRING  
 
EXPERIMENTAL MODERNIZED OPEN LAKE FORECAST IS AVAILABLE ONLINE AT  
WEATHER.GOV/MKX/GLFTABLE  
 
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:  
WEATHER.GOV/GREATLAKES  
 
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