617  
FZUS63 KLOT 270751  
GLFLM  
 
OPEN LAKE FORECAST FOR LAKE MICHIGAN  
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL  
251 AM CDT MON MAR 27 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 29.8 INCHES OVER THE CENTRAL GREAT  
LAKES WILL CONTINUE TO WESTERN QUEBEC BY THIS EVENING. A SECOND  
LOW PRESSURE OF 29.7 INCHES OVER THE SOUTHERN PLAINS WILL TRACK  
NORTHEAST TO THE MIDDLE MISSISSIPPI VALLEY THIS AFTERNOON AND THEN  
UP TO THE OHIO VALLEY TONIGHT INTO TUESDAY...SLOWLY WEAKENING AS  
IT DOES SO. HIGH PRESSURE AVERAGING 30.3 INCHES CENTERED OVER  
ONTARIO WILL THEN BUILD INTO THE GREAT LAKES REGION TUESDAY AND  
WEDNESDAY. LOW PRESSURE OF 29.6 INCHES WILL DEVELOP OVER THE  
SOUTHERN PLAINS WEDNESDAY...AND THEN SLOWLY LIFT NORTHEAST TOWARDS  
THE SOUTHERN GREAT LAKES BY THE END OF THE WORK WEEK.  
 
LMZ261-362-364-366-563-565-567-868-271530-  
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 MAR 27 2017  
 
SHEBOYGAN WI TO PENTWATER MI NORTH...  
   
..DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING
 
 
   
TODAY
 
NORTHWEST WINDS 10 TO 15 KT BECOMING NORTH. AREAS OF  
DENSE FOG THIS MORNING. WAVES 1 TO 3 FT.    
TONIGHT
 
NORTH WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT.  
WAVES BUILDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT.    
TUESDAY
 
NORTHEAST WINDS 10 TO 20 KT BECOMING NORTH 15 TO  
25 KT. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.    
TUESDAY NIGHT
 
NORTH WINDS 15 TO 25 KT BECOMING NORTHEAST.  
WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.    
WEDNESDAY
 
NORTHEAST WINDS 10 TO 20 KT INCREASING TO 15 TO  
25 KT. WAVES 2 TO 4 FT.    
WEDNESDAY NIGHT
 
NORTHEAST WINDS 15 TO 25 KT BECOMING EAST  
10 TO 20 KT. WAVES 2 TO 4 FT.    
THURSDAY
 
EAST WINDS 15 TO 25 KT. CHANCE OF RAIN AND SNOW.  
WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.    
FRIDAY
 
NORTHEAST WINDS TO 30 KT. CHANCE OF RAIN AND SNOW.  
WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.  
 

 
 
LMZ080-669-671-673-675-777-779-870-872-874-876-878-271530-  
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 MAR 27 2017  
 
SHEBOYGAN WI TO PENTWATER MI SOUTH...  
   
..DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING
 
 
   
TODAY
 
NORTHWEST WINDS 10 TO 15 KT BECOMING NORTH. AREAS OF  
DENSE FOG THIS MORNING. SLIGHT CHANCE OF RAIN SHOWERS THIS  
AFTERNOON. WAVES 1 TO 3 FT.    
TONIGHT
 
NORTH WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT.  
CHANCE OF RAIN SHOWERS IN THE EVENING...THEN SLIGHT CHANCE OF  
RAIN SHOWERS OVERNIGHT. WAVES BUILDING TO 4 TO 6 FT OCCASIONALLY  
TO 8 FT.   
TUESDAY
 
NORTH WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT.  
WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.    
TUESDAY NIGHT
 
NORTHEAST WINDS 15 TO 25 KT. WAVES 3 TO 5 FT  
OCCASIONALLY TO 7 FT.    
WEDNESDAY
 
NORTHEAST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.    
WEDNESDAY NIGHT
 
NORTHEAST WINDS 15 TO 25 KT BECOMING EAST.  
CHANCE OF RAIN. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.    
THURSDAY
 
EAST WINDS TO 30 KT. RAIN WITH SNOW LIKELY. WAVES  
4 TO 7 FT OCCASIONALLY TO 9 FT.    
FRIDAY
 
NORTHEAST WINDS TO 30 KT BECOMING NORTH. RAIN LIKELY.  
WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.  
 

 
 
LMZ761-271530-  
MAFOR 2709/  
MICHIGAN NORTH 12713 19714 11700 11710 11810 12820 11830. WAVES 1  
TO 3 FT TODAY. WAVES BUILDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT  
TONIGHT.  
 
MICHIGAN SOUTH 12713 19714 12800 11810 12820 11830. CHANCE OF  
RAIN SHOWERS LATE TONIGHT. WAVES 1 TO 3 FT TODAY. WAVES BUILDING  
TO 4 TO 6 FT OCCASIONALLY TO 8 FT TONIGHT.  
 

 
 
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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