519  
FZUS63 KMKX 182100  
GLFLM  
 
OPEN LAKE FORECAST FOR LAKE MICHIGAN  
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI  
300 PM CST FRI JAN 18 2019  
 
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 29.5 INCHES WILL MOVE FROM THE SOUTHERN PLAINS  
INTO EASTERN KENTUCKY TONIGHT AND SATURDAY. THIS WILL BRING GUSTY  
NORTH TO NORTHEAST WINDS TO LAKE MICHIGAN THAT LINGER THROUGH THE  
REST OF THE WEEKEND. SOME GALES ARE POSSIBLE SATURDAY ALONG WITH  
AN INCREASING THREAT FOR FREEZING SPRAY THROUGH THE WEEKEND.  
 
HIGH PRESSURE OF 30.6 INCHES WILL MOVE ACROSS ONTARIO LATER  
SUNDAY INTO SUNDAY NIGHT, BRINGING LIGHTER WINDS. SOUTH WINDS WILL  
INCREASE ON MONDAY INTO TUESDAY AHEAD THE NEXT LOW APPROACHING  
THE REGION.  
 
LMZ261-362-364-366-563-565-567-868-190415-  
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-  
300 PM CST FRI JAN 18 2019  
 
SHEBOYGAN WI TO PENTWATER MI NORTH...  
 
...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM SATURDAY MORNING  
THROUGH SUNDAY MORNING...  
   
TONIGHT
 
NORTHEAST WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT.  
FREEZING SPRAY. SLIGHT CHANCE OF SNOW THIS EVENING, THEN CHANCE  
OF SNOW OVERNIGHT. WAVES 3 TO 5 FT BUILDING TO 4 TO 7 FT  
OCCASIONALLY TO 9 FT.    
SATURDAY
 
NORTHEAST WINDS 15 TO 25 KT. HEAVY FREEZING SPRAY IN  
THE MORNING, THEN FREEZING SPRAY IN THE AFTERNOON. CHANCE OF SNOW  
IN THE MORNING, THEN SLIGHT CHANCE OF SNOW SHOWERS IN THE  
AFTERNOON. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.    
SATURDAY NIGHT
 
NORTHEAST WINDS 15 TO 25 KT BECOMING NORTH.  
FREEZING SPRAY IN THE EVENING, THEN HEAVY FREEZING SPRAY  
OVERNIGHT. CHANCE OF SNOW SHOWERS. WAVES 4 TO 7 FT OCCASIONALLY  
TO 9 FT.    
SUNDAY
 
NORTHEAST WINDS 15 TO 25 KT DIMINISHING TO 10 TO 20 KT.  
HEAVY FREEZING SPRAY. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT  
SUBSIDING TO 3 TO 5 FT.    
SUNDAY NIGHT
 
NORTHEAST WINDS 10 TO 20 KT BECOMING EAST 10 TO  
15 KT. HEAVY FREEZING SPRAY IN THE EVENING, THEN FREEZING SPRAY  
OVERNIGHT. WAVES 2 TO 4 FT.    
MONDAY
 
SOUTHEAST WINDS 10 TO 20 KT BECOMING SOUTH TO 30 KT IN  
THE AFTERNOON. FREEZING SPRAY. WAVES 2 TO 4 FT BUILDING TO 4 TO  
7 FT OCCASIONALLY TO 9 FT.    
MONDAY NIGHT
 
SOUTH WINDS TO 30 KT. FREEZING SPRAY. CHANCE OF  
SNOW. WAVES 7 TO 10 FT OCCASIONALLY TO 13 FT.    
TUESDAY
 
SOUTH WINDS TO 30 KT. FREEZING SPRAY. SNOW. WAVES 7 TO  
10 FT OCCASIONALLY TO 13 FT SUBSIDING TO 5 TO 8 FT OCCASIONALLY  
TO 10 FT.    
WEDNESDAY
 
NORTHWEST WINDS TO 30 KT DIMINISHING TO 10 TO 20 KT.  
FREEZING SPRAY. CHANCE OF SNOW. WAVES 4 TO 6 FT OCCASIONALLY TO  
8 FT SUBSIDING TO 3 TO 5 FT.  
 

 
 
LMZ080-669-671-673-675-777-779-870-872-874-876-878-190415-  
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-  
300 PM CST FRI JAN 18 2019  
 
SHEBOYGAN WI TO PENTWATER MI SOUTH...  
   
TONIGHT
 
NORTHEAST WINDS 15 TO 25 KT INCREASING TO 30 KT. SNOW  
WITH A CHANCE OF FREEZING RAIN THIS EVENING, THEN SNOW OVERNIGHT.  
FREEZING SPRAY OVERNIGHT. WAVES 3 TO 5 FT BUILDING TO 5 TO 8 FT  
OCCASIONALLY TO 10 FT.    
SATURDAY
 
NORTHEAST WINDS TO 30 KT. FREEZING SPRAY. SNOW WITH A  
CHANCE OF LIGHT FREEZING RAIN IN THE MORNING, THEN CHANCE OF SNOW  
SHOWERS AND SLIGHT CHANCE OF LIGHT FREEZING RAIN IN THE  
AFTERNOON. WAVES 6 TO 9 FT OCCASIONALLY TO 12 FT.    
SATURDAY NIGHT
 
NORTHEAST WINDS TO 30 KT BECOMING NORTH.  
FREEZING SPRAY. CHANCE OF SNOW SHOWERS. WAVES 6 TO 9 FT  
OCCASIONALLY TO 12 FT.    
SUNDAY
 
NORTH WINDS 15 TO 25 KT BECOMING NORTHEAST 10 TO 20 KT.  
FREEZING SPRAY. CHANCE OF SNOW SHOWERS. WAVES 5 TO 8 FT  
OCCASIONALLY TO 10 FT SUBSIDING TO 4 TO 6 FT OCCASIONALLY TO  
8 FT.    
SUNDAY NIGHT
 
NORTHEAST WINDS 10 TO 20 KT BECOMING EAST 10 TO  
15 KT. FREEZING SPRAY. WAVES 2 TO 4 FT.    
MONDAY
 
SOUTHEAST WINDS 10 TO 20 KT INCREASING TO 30 KT IN THE  
AFTERNOON. FREEZING SPRAY. WAVES 2 TO 4 FT BUILDING TO 4 TO 7 FT  
OCCASIONALLY TO 9 FT.    
MONDAY NIGHT
 
SOUTHEAST WINDS TO 30 KT BECOMING SOUTH. FREEZING  
SPRAY. WAVES 7 TO 10 FT OCCASIONALLY TO 13 FT.    
TUESDAY
 
SOUTH WINDS TO 30 KT. SNOW AND RAIN. WAVES 7 TO 10 FT  
OCCASIONALLY TO 13 FT.    
WEDNESDAY
 
NORTHWEST WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT.  
FREEZING SPRAY. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.  
 

 
 
LMZ761-190415-  
MAFOR 1822/  
MICHIGAN NORTH 11820 11830 12130 13132 11142. CHANCE OF SNOW  
TONIGHT AND SATURDAY MORNING. WAVES 3 TO 5 FT BUILDING TO 4 TO 7  
FT OCCASIONALLY TO 9 FT TONIGHT. WAVES 4 TO 6 FT OCCASIONALLY TO 8  
FT SATURDAY.  
 
MICHIGAN SOUTH 11120 12137 11147 14147 19157. CHANCE OF SNOW AND  
LIGHT FREEZING RAIN EARLY, THEN CHANCE OF FREEZING RAIN THIS  
EVENING. CHANCE OF LIGHT FREEZING RAIN SATURDAY MORNING, THEN  
CHANCE OF SNOW SHOWERS EARLY SATURDAY AFTERNOON. WAVES 3 TO 5 FT  
BUILDING TO 5 TO 8 FT OCCASIONALLY TO 10 FT TONIGHT. WAVES 6 TO 9  
FT OCCASIONALLY TO 12 FT SATURDAY.  
 

 
MBK  
 
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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