950  
FZUS63 KLOT 251950  
GLFLM  
 
OPEN LAKE FORECAST FOR LAKE MICHIGAN  
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL  
250 PM CDT THU MAY 25 2017  
 
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 29.4 INCHES OVER THE UPPER OHIO VALLEY  
WILL MOVE TO NEW ENGLAND FRIDAY. A WEAK RIDGE AVERAGING 29.8  
INCHES WILL MOVE FROM THE MISSISSIPPI VALLEY THIS AFTERNOON TO  
LAKE MICHIGAN FRIDAY...THEN TO THE EASTERN LAKES SATURDAY. LOW  
PRESSURE OF 29.7 INCHES WILL DEVELOP OVER THE SOUTHERN PLAINS  
SATURDAY AND LIFT TO MICHIGAN EARLY SUNDAY. MEANWHILE...ANOTHER  
LOW OF 29.4 INCHES WILL MOVE EAST ACROSS THE CANADIAN PRAIRIES  
OVER THE WEEKEND. THE TWO LOWS WILL MERGE OVER ONTARIO LATE SUNDAY  
THEN SLOWLY LIFT TO JAMES BAY TUESDAY.  
 
LMZ261-362-364-366-563-565-567-868-260315-  
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-  
250 PM CDT THU MAY 25 2017  
 
SHEBOYGAN WI TO PENTWATER MI NORTH...  
   
TONIGHT
 
NORTH WINDS 10 TO 20 KT DIMINISHING TO 5 TO 10 KT.  
SLIGHT CHANCE OF RAIN SHOWERS THIS EVENING. WAVES 3 TO 5 FT  
OCCASIONALLY TO 7 FT SUBSIDING TO 2 TO 4 FT.    
FRIDAY
 
VARIABLE WINDS 5 TO 10 KT. SLIGHT CHANCE OF RAIN  
SHOWERS IN THE AFTERNOON. WAVES 1 TO 3 FT.    
FRIDAY NIGHT
 
SOUTH WINDS 5 TO 10 KT BACKING TO EAST. WAVES  
1 FT OR LESS.    
SATURDAY
 
SOUTH WINDS 5 TO 10 KT BECOMING SOUTHWEST. WAVES 1 FT  
OR LESS.    
SATURDAY NIGHT
 
SOUTH WINDS 10 TO 15 KT DIMINISHING TO 5 TO  
10 KT. CHANCE OF RAIN SHOWERS OVERNIGHT. WAVES 1 FT OR LESS.   
SUNDAY
 
SOUTHWEST WINDS 5 TO 10 KT INCREASING TO 10 TO 15 KT.  
CHANCE OF RAIN SHOWERS. WAVES 1 TO 2 FT.    
SUNDAY NIGHT
 
SOUTHWEST WINDS 10 TO 20 KT BECOMING WEST. WAVES  
1 TO 3 FT.    
MONDAY
 
WEST WINDS 10 TO 20 KT BECOMING SOUTHWEST. CHANCE OF  
SHOWERS. WAVES 2 TO 4 FT.    
TUESDAY
 
WEST WINDS 10 TO 20 KT. CHANCE OF RAIN SHOWERS. WAVES  
2 TO 4 FT.  
 

 
 
LMZ080-669-671-673-675-777-779-870-872-874-876-878-260315-  
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-  
250 PM CDT THU MAY 25 2017  
 
SHEBOYGAN WI TO PENTWATER MI SOUTH...  
   
TONIGHT
 
NORTHWEST WINDS 10 TO 20 KT DIMINISHING TO 10 TO 15  
KT. WAVES 3 TO 6 FT OCCASIONALLY TO 8 FT SUBSIDING TO 2 TO 4 FT.    
FRIDAY
 
VARIABLE WINDS 5 TO 10 KT BECOMING EAST 10 TO 15 KT.  
CHANCE OF RAIN SHOWERS IN THE AFTERNOON. WAVES 1 TO 3 FT.    
FRIDAY NIGHT
 
NORTHEAST WINDS 10 TO 20 KT DIMINISHING TO 10 TO  
15 KT. CHANCE OF SHOWERS IN THE EVENING. WAVES 1 TO 3 FT.    
SATURDAY
 
NORTH WINDS 10 TO 15 KT DIMINISHING TO 5 TO 10 KT.  
WAVES 1 FT OR LESS.    
SATURDAY NIGHT
 
EAST WINDS 5 TO 10 KT. CHANCE OF SHOWERS AND  
THUNDERSTORMS OVERNIGHT. WAVES 1 FT OR LESS.    
SUNDAY
 
NORTH WINDS 10 TO 15 KT BECOMING WEST. CHANCE OF  
SHOWERS. WAVES 1 TO 2 FT.    
SUNDAY NIGHT
 
WEST WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.    
MONDAY
 
WEST WINDS 10 TO 20 KT. CHANCE OF SHOWERS. WAVES 2 TO  
4 FT.    
TUESDAY
 
WEST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.  
 

 
 
LMZ761-260315-  
MAFOR 2521/  
MICHIGAN NORTH 12820 12810 11800 13900. WAVES 3 TO 5 FT  
OCCASIONALLY TO 7 FT SUBSIDING TO 2 TO 4 FT TONIGHT. WAVES 1 TO 3  
FT FRIDAY.  
 
MICHIGAN SOUTH 13720 12710 12900 11210. CHANCE OF SHOWERS FRIDAY.  
WAVES 3 TO 6 FT OCCASIONALLY TO 8 FT SUBSIDING TO 2 TO 4 FT  
TONIGHT. WAVES 1 TO 3 FT FRIDAY.  
 

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