075  
FZUS81 KCLE 182021  
ICELIO  
 
GREAT LAKES ICE OUTLOOK  
NATIONAL WEATHER SERVICE CLEVELAND OHIO  
321 PM EST FRI JAN 18 2019  
 
ACTIVE WATCHES...WARNINGS...AND ADVISORIES ON THE GREAT LAKES CAN  
BE FOUND AT...HTTP://WWW.WEATHER.GOV/GREATLAKES/5 DAY ICE DISCUSSION...  
 
5 DAY ICE DISCUSSION...  
   
..MODERATE ICE GROWTH EXPECTED INTO NEXT WEEK
 
 
WINDS ACROSS THE SOUTHERN LAKES WILL INCREASE TO 25 KNOTS AND GREATER AS  
A DEEPENING STORM SYSTEM MOVES FROM THE OHIO VALLEY INTO NEW ENGLAND OVER  
THE WEEKEND. ELSEWHERE WINDS WILL BE LIGHT ENOUGH TO SUPPORT MODERATE ICE  
GROWTH. AN ARCTIC AIRMASS WILL SETTLE OVER THE LAKES REGION BEHIND THIS  
STORM SYSTEM AND LINGER INTO EARLY NEXT WEEK. SIGNIFICANT ICE GROWTH IS  
EXPECTED DURING THIS PERIOD. TEMPERATURES AT INTERNATIONAL FALLS WILL  
REACH 30 BELOW ZERO SUNDAY MORNING. THIS FRIGID AIRMASS WILL EXTEND TO THE  
SOUTHERN LAKES WHERE AIR TEMPERATURE WILL BE BELOW FREEZING FOR AN  
EXTENDED PERIOD OF TIME. WIND SPEEDS HOWEVER WILL REMAIN AROUND 15 TO 25  
KNOTS THROUGH MONDAY, WITH SOME LIGHTER WINDS OVER LAKE SUPERIOR. DUE TO  
THE EXPECTED WINDY CONDITIONS, ICE GROWTH WILL BE BEST ALONG SHELTERED  
AREAS.  
 
THE WEATHER WILL MODERATE A BIT MID TO LAKE WEEK, BUT TEMPERATURES WILL  
REMAIN BELOW FREEZING APART FROM BRIEF DAYTIME WARM UPS OVER LAKE ERIE AND  
LAKE ONTARIO. WINDS WILL REMAIN LIGHT, AND THIS COMBINED WITH TEMPERATURES  
BELOW FREEZING FOR MOST OF THE REGION COULD SUPPORT LIGHT ICE GROWTH.  
ANOTHER WAVE OF ARCTIC AIR WILL MOVE INTO THE NORTHERN LAKES LATE NEXT  
WEEK.  
 
MAX WIND (KNOTS) AT EACH SITE FOR THE 12 HOUR FCST PERIOD  
 
LOCATION TONIGHT THU THU NIGHT FRI FRI NIGHT  
WEST SUPERIOR 012/07 340/15 330/16 360/13 020/12  
MID SUPERIOR 010/10 330/16 320/24 330/20 350/11  
EAST SUPERIOR 08/14 280/18 330/24 320/20 350/11  
NORTH MICHIGAN 012/11 230/19 290/18 320/15 360/13  
SOUTH MICHIGAN 019/15 150/15 210/16 350/14 030/18  
NORTH HURON 320/13 220/15 240/18 330/20 300/16  
MID HURON 015/11 220/16 230/18 310/16 310/15  
SOUTH HURON 320/13 190/15 190/17 300/14 330/15  
WEST ERIE 019/12 110/11 170/12 290/08 350/12  
EAST ERIE 350/07 130/11 210/13 270/14 320/12  
CENTRAL ONTARIO 016/10 140/15 190/15 310/21 310/14  
 
TEMPERATURE FORECASTS FOR SELECTED CITIES  
 
LOCATION 01/17 01/18 01/19 01/20 01/21 01/22  
DULUTH  
 
FREEZING DEGREE DAY ACCUMULATIONS AT SELECTED STATIONS  
COMPARED TO NORMAL CALCULATED ON WED JAN 16:  
 
LOCATION DATE NORMAL CURRENT  
----------------------------------------  
 
DULUTH, MN JAN 15 982 768  
MARQUETTE, MI JAN 15 765 753  
SAU_S_MAR, MI JAN 15 563 465  
GREENBAY, WI JAN 15 580 251  
MILWAUKEE, WI JAN 15 317 36  
CHICAGO, IL JAN 15 253 49  
MUSKEGON, MI JAN 15 158 35  
ALPENA, MI JAN 15 404 312  
DETROIT, MI JAN 15 166 40  
TOLEDO, OH JAN 15 176 45  
CLEVELAND, OH JAN 15 89 33  
BUFFALO, NY JAN 15 171 76  
 
 
NORMAL TEMPS FOR SELECTED LOCATIONS AROUND THE  
GREAT LAKES FOR WED JAN 16  
 
LOCATION HIGH LOW  
----------------------------------------------  
 
DULUTH,MN 18 -1  
MARQUETTE,MI 22 7  
GREENBAY,WI 18 -1  
MILWAUKEE,WI 30 17  
CHICAGO,IL 30 14  
MUSKEGON,MI 28 13  
ALPENA,MI 18 -1  
DETROIT,MI 31 17  
TOLEDO,OH 31 16  
CLEVELAND,OH 33 19  
BUFFALO,NY 31 18  
 

 
 
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