015  
FZUS63 KLOT 250751  
GLFLM  
 
OPEN LAKE FORECAST FOR LAKE MICHIGAN  
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL  
251 AM CDT MON SEP 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 29.7 INCHES OVER ONTARIO WILL MOVE TO  
JAMES BAY TODAY...WHILE HIGH PRESSURE OF 30.1 INCHES SLOWLY  
DRIFTS FROM THE EASTERN GREAT LAKES TOWARD NEW ENGLAND AND  
WEAKENS. ANOTHER LOW OF 29.7 INCHES WILL LIFT ACROSS THE NORTHERN  
GREAT LAKES TUESDAY AND WILL TRAIL A COLD FRONT ACROSS THE LAKE  
TUESDAY NIGHT. HIGH PRESSURE OF 30.2 INCHES WILL SPREAD ACROSS THE  
GREAT PLAINS INTO ILLINOIS AND INDIANA THROUGH THURSDAY.  
 
LMZ261-362-364-366-563-565-567-868-251530-  
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-  
251 AM CDT MON SEP 25 2017  
 
SHEBOYGAN WI TO PENTWATER MI NORTH...  
   
TODAY
 
SOUTH WINDS 10 TO 20 KT DIMINISHING TO 10 TO 15 KT.  
WAVES 1 TO 3 FT.    
TONIGHT
 
SOUTH WINDS 10 TO 15 KT BECOMING SOUTHEAST. WAVES 1 TO  
2 FT.    
TUESDAY
 
SOUTH WINDS 10 TO 15 KT BECOMING SOUTHWEST 10 TO  
20 KT. CHANCE OF SHOWERS IN THE AFTERNOON. WAVES 1 TO 2 FT.    
TUESDAY NIGHT
 
WEST WINDS 10 TO 20 KT BECOMING NORTHWEST.  
CHANCE OF SHOWERS IN THE EVENING. WAVES 1 TO 3 FT BUILDING TO  
2 TO 4 FT.    
WEDNESDAY
 
NORTHWEST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.    
WEDNESDAY NIGHT
 
NORTHWEST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.    
THURSDAY
 
WEST WINDS 10 TO 15 KT BECOMING SOUTHWEST 10 TO  
20 KT. WAVES 2 TO 4 FT.    
FRIDAY
 
NORTHWEST WINDS TO 30 KT BECOMING NORTH. WAVES 6 TO  
9 FT OCCASIONALLY TO 12 FT BUILDING TO 7 TO 10 FT OCCASIONALLY TO  
13 FT.  
 

 
 
LMZ080-669-671-673-675-777-779-870-872-874-876-878-251530-  
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-  
251 AM CDT MON SEP 25 2017  
 
SHEBOYGAN WI TO PENTWATER MI SOUTH...  
   
TODAY
 
SOUTH WINDS 10 TO 15 KT BECOMING SOUTHEAST. WAVES 1 TO  
3 FT.    
TONIGHT
 
SOUTHEAST WINDS 10 TO 15 KT BECOMING SOUTH 5 TO 10 KT.  
WAVES 1 TO 2 FT.    
TUESDAY
 
SOUTH WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.    
TUESDAY NIGHT
 
WEST WINDS 10 TO 20 KT BECOMING NORTHWEST. WAVES  
1 TO 2 FT BUILDING TO 2 TO 4 FT.    
WEDNESDAY
 
NORTHWEST WINDS 10 TO 20 KT. WAVES 3 TO 5 FT.    
WEDNESDAY NIGHT
 
NORTH WINDS 10 TO 20 KT. WAVES 3 TO 5 FT.   
THURSDAY
 
NORTHWEST WINDS 10 TO 15 KT BECOMING WEST. WAVES 2 TO  
4 FT.    
FRIDAY
 
NORTHWEST WINDS TO 30 KT BECOMING NORTH. WAVES 7 TO  
10 FT OCCASIONALLY TO 13 FT.  
 

 
 
LMZ761-251530-  
MAFOR 2509/  
MICHIGAN NORTH 13420 13410 12300. WAVES 1 TO 3 FEET.  
 
MICHIGAN SOUTH 14410 13310 11410. WAVES 1 TO 3 FEET.  
 

 
 
RODRIGUEZ  
 
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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