NORTH AMERICAN SNOW AREA (Millions of Square KM) 12 MON JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC MEAN 1973 16.7 16.6 14.5 13.3 9.2 7.0 4.0 3.7 4.1 7.5 14.2 16.4 10.6 1974 17.0 16.2 16.1 14.3 11.6 5.9 3.7 3.1 3.5 9.7 12.6 15.7 10.8 1975 17.1 17.1 16.6 15.1 10.3 6.2 3.5 3.0 3.9 8.6 13.7 16.2 10.9 1976 16.9 16.4 15.7 12.4 10.1 7.5 4.6 3.2 3.9 8.9 12.7 15.6 10.7 1977 17.4 15.7 15.4 12.7 9.6 7.1 4.2 3.1 4.2 7.8 12.0 16.1 10.4 1978 18.0 18.6 16.7 13.4 10.8 8.0 5.6 4.3 4.9 8.1 13.8 17.4 11.6 1979 18.2 18.5 16.5 14.9 10.5 6.7 5.0 3.7 3.9 6.3 11.4 14.5 10.8 1980 16.8 17.3 15.2 13.1 8.7 5.5 3.9 3.5 3.7 6.4 12.8 13.8 10.1 1981 15.8 15.4 14.5 12.7 9.9 6.9 4.4 3.9 3.5 8.0 12.7 16.5 10.4 1982 18.2 17.6 16.0 14.5 9.6 5.9 2.8 2.5 4.2 8.0 14.0 16.2 10.8 1983 17.0 16.7 15.8 13.6 10.5 6.6 3.2 2.6 3.8 8.4 13.0 17.8 10.8 1984 17.6 16.1 15.6 12.0 8.3 4.6 2.7 2.3 3.3 7.4 13.3 16.1 9.9 1985 18.0 17.0 15.6 13.4 10.8 7.2 4.0 2.8 3.7 8.0 15.2 17.2 11.1 1986 16.4 17.0 14.3 12.9 9.4 6.5 3.5 2.9 4.1 8.5 14.1 15.0 10.4 1987 16.9 16.1 15.8 11.6 8.3 6.5 4.1 2.7 3.4 6.5 11.6 15.9 9.9 1988 18.0 16.7 14.2 12.2 9.0 5.3 3.0 2.3 3.3 7.3 13.1 15.3 10.0 1989 16.4 17.1 15.5 13.2 9.0 5.4 2.9 2.3 4.0 7.6 13.5 17.2 10.3 1990 16.5 16.5 14.9 12.5 8.7 4.8 2.9 2.4 3.4 7.6 12.1 16.8 9.9 1991 17.1 15.7 14.6 12.4 8.8 6.0 3.4 2.8 3.8 9.0 14.5 15.7 10.3 1992 16.4 15.4 14.4 12.5 9.5 6.2 3.3 2.6 4.0 8.2 14.1 17.5 10.3 1993 17.5 17.4 15.7 12.1 8.7 5.1 2.8 2.4 4.0 7.9 14.2 15.8 10.3 1994 17.3 16.8 14.9 12.6 8.7 5.8 3.1 2.6 3.5 7.0 13.1 16.2 10.1 1995 17.0 16.0 15.0 14.4 9.1 5.6 3.0 3.1 4.0 7.8 13.6 16.2 10.4 1996 17.1 16.6 15.8 13.8 10.1 5.8 3.1 2.7 4.2 9.3 14.9 16.2 10.8 1997 17.1 16.7 15.5 14.7 10.9 6.0 3.5 3.1 4.1 8.3 13.5 16.5 10.8 1998 16.7 16.1 16.1 11.9 8.0 5.1 3.1 2.7 3.0 7.4 12.4 15.9 9.9 1999 16.5 16.0 15.5 12.6 9.1 5.0 2.7 2.1 3.4 7.7 11.4 14.9 9.7 2000 16.5 15.9 13.8 11.8 9.3 5.8 2.4 2.2 4.6 7.6 13.8 17.2 10.1 2001 17.2 16.9 15.3 12.3 8.6 5.2 2.9 2.2 3.2 7.5 12.3 15.8 9.9 2002 16.3 16.0 15.3 12.9 9.3 5.7 2.6 2.3 3.1 9.6 13.6 15.2 10.2 2003 16.0 16.8 14.6 12.8 9.0 5.5 2.3 2.2 3.8 7.9 14.1 16.3 10.1 2004 17.2 16.9 14.8 11.9 9.2 5.7 2.7 2.0 3.9 8.7 12.7 15.2 10.1 2005 17.1 15.6 14.6 11.3 8.9 5.1 2.2 2.0 3.6 7.0 12.0 16.1 9.6 2006 15.6 15.9 15.1 11.4 8.1 4.9 2.6 2.0 2.7 8.2 13.1 15.6 9.6 2007 17.0 16.7 14.6 12.2 8.0 5.0 2.3 1.9 3.3 7.4 12.7 17.2 9.9 2008 17.0 16.7 15.4 14.4 9.9 4.9 2.1 2.0 3.0 7.0 13.0 16.8 10.2 2009 16.9 16.3 15.0 12.8 8.5 4.6 2.2 1.9 3.0 8.8 11.6 17.3 9.9 2010 17.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 MEANS 17.0 16.6 15.3 12.9 9.4 5.9 3.3 2.7 3.7 7.9 13.1 16.1 STD DV 0.6 0.7 0.7 1.0 0.9 0.8 0.8 0.6 0.5 0.8 1.0 0.9