082  
FZUS63 KLOT 141948  
GLFLM  
 
OPEN LAKE FORECAST FOR LAKE MICHIGAN  
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL  
248 PM CDT TUE AUG 14 2018  
 
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
 
HIGH PRESSURE OF 30.0 INCHES OVER THE TENNESSEE  
VALLEY WILL SLIDE SOUTHEAST TO THE SOUTHERN APPALACHIANS TONIGHT.  
LOW PRESSURE OF 29.8 INCHES OVER NORTHERN WISCONSIN WILL MOVE  
ACROSS NORTHERN LAKE MICHIGAN TONIGHT WHILE A TRAILING COLD FRONT  
SAGS SOUTH AND STALLS OUT OVER THE CENTER OF THE LAKE. ON  
WEDNESDAY, A 29.7 INCH LOW WILL MOVE FROM THE CENTRAL PLAINS  
ACROSS THE MIDDLE MISSISSIPPI VALLEY. THE LOW WILL TRACK  
NORTHEASTWARD ACROSS LOWER MICHIGAN ON THURSDAY AFTERNOON AND  
CONTINUE TO LAKE ONTARIO BY FRIDAY MORNING. MEANWHILE, HIGH  
PRESSURE OF 30.3 INCHES WILL MOVE FROM NORTHERN MANITOBA TO JAMES  
BAY BY FRIDAY AND THEN CONTINUE EAST ACROSS NORTHERN QUEBEC INTO  
THE WEEKEND.  
 
LMZ261-362-364-366-563-565-567-868-150330-  
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-  
248 PM CDT TUE AUG 14 2018  
 
SHEBOYGAN WI TO PENTWATER MI NORTH...  
   
TONIGHT
 
SOUTHWEST WINDS 10 TO 20 KT VEERING TO NORTHEAST.  
CHANCE OF SHOWERS THIS EVENING, THEN SLIGHT CHANCE OF SHOWERS  
OVERNIGHT. WAVES 2 TO 4 FT.    
WEDNESDAY
 
NORTHEAST WINDS 10 TO 15 KT. SLIGHT CHANCE OF  
SHOWERS AND THUNDERSTORMS IN THE MORNING. WAVES 2 TO 4 FT.    
WEDNESDAY NIGHT
 
NORTHEAST WINDS 10 TO 15 KT INCREASING TO  
10 TO 20 KT. WAVES 1 TO 2 FT.    
THURSDAY
 
NORTHEAST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.    
THURSDAY NIGHT
 
NORTH WINDS 10 TO 20 KT DIMINISHING TO 10 TO  
15 KT. WAVES 2 TO 4 FT SUBSIDING TO 1 TO 3 FT.    
FRIDAY
 
NORTH WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.  
WAVES 1 TO 2 FT.    
FRIDAY NIGHT
 
NORTH WINDS 10 TO 15 KT BECOMING NORTHEAST. WAVES  
1 TO 2 FT.    
SATURDAY
 
NORTHEAST WINDS 10 TO 15 KT DIMINISHING TO 5 TO  
10 KT. WAVES 1 TO 2 FT.    
SUNDAY
 
SOUTHWEST WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.  
 

 
 
LMZ080-669-671-673-675-777-779-870-872-874-876-878-150330-  
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-  
248 PM CDT TUE AUG 14 2018  
 
SHEBOYGAN WI TO PENTWATER MI SOUTH...  
   
TONIGHT
 
SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST 10 TO  
15 KT. WAVES 1 TO 3 FT SUBSIDING TO 1 TO 2 FT.    
WEDNESDAY
 
SOUTH WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.  
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 1 TO 2 FT.   
WEDNESDAY NIGHT
 
SOUTHEAST WINDS 10 TO 20 KT BECOMING EAST.  
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 1 TO 3 FT.    
THURSDAY
 
NORTHEAST WINDS 10 TO 20 KT BECOMING NORTH. CHANCE OF  
SHOWERS AND THUNDERSTORMS IN THE MORNING. WAVES 2 TO 4 FT.    
THURSDAY NIGHT
 
NORTH WINDS 10 TO 20 KT DIMINISHING TO 10 TO  
15 KT. WAVES 2 TO 4 FT.    
FRIDAY
 
NORTH WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.  
WAVES 1 TO 3 FT.    
FRIDAY NIGHT
 
NORTH WINDS 10 TO 20 KT BECOMING NORTHEAST. WAVES  
1 TO 2 FT.    
SATURDAY
 
NORTHEAST WINDS 10 TO 20 KT DIMINISHING TO 10 TO  
15 KT. WAVES 1 TO 3 FT.    
SUNDAY
 
SOUTHEAST WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.  
 

 
 
LMZ761-150330-  
MAFOR 1421/  
MICHIGAN NORTH 12520 11620 11820 14110. CHANCE OF SHOWERS EARLY  
THIS EVENING. WAVES 2 TO 4 FT.  
 
MICHIGAN SOUTH 12420 12410 11510 12410 11416. CHANCE OF SHOWERS  
AND THUNDERSTORMS WEDNESDAY. WAVES 1 TO 3 FT SUBSIDING TO 1 TO 2  
FT TONIGHT. WAVES 1 TO 2 FT WEDNESDAY.  
 

 
 
EXPERIMENTAL MODERNIZED OPEN LAKE FORECAST IS AVAILABLE ONLINE AT  
WEATHER.GOV/LOT/GLFTABLE  
 
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:  
WEATHER.GOV/GREATLAKES  
 
NOTICE - STARTING WEDNESDAY SEPTEMBER 5TH 2018 THIS PRODUCT WILL  
BE ISSUED BY NWS MILWAUKEE. FOR ADDITIONAL INFORMATION:  
 
HTTPS://WWW.WEATHER.GOV/MEDIA/NOTIFICATION/PDFS/SCN18-64LAKE_MICHIGAN_TRANSFER.PDF  
OR CONTACT: ED FENELON AT EDWARD.FENELON@NOAA.GOV OR BEN SCHOTT  
AT BEN.SCHOTT@NOAA.GOV  
 
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