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Great Lakes Ice Cover Data Set and Climatology Introduction Original Ice Charts First Ice, Last Ice and Ice Duration Daily Ice Cover Time Series Weekly Ice Cover Statistics Questions / Contact GLERL home  
   
 

First Ice - 20% Ice Concentration

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20 % Average
Average

20% Composite Maximum
Composite Maximum

20% Composite Minimum
Composite Minimum
1973
1973		 1974
1974		 1975
1975		 1976
1976
1977
1977		 1978
1978		 1979
1979		 1980
1980
1981
1981		 1982
1982		 1983
1983		 1984
1984

1985
1985

1986
1986 		1987
1987		 1988
1988
1989
1989		 1990
1990		 1991
1991		 1992
1992
1993
1993		 1994
1994		 20% - 1995
1995		 20% - 1996
1996
20% - 1997
1997		 20% - 1998
1998		 20% - 1999
1999		 20% - 2000
2000
20% - 2001
2001		 20% - 2002
2002		    

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