NORTHERN HEMISPHERE SNOW AREA (Millions of Square KM) 12 MON JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC MEAN 1973 45.0 45.8 39.2 30.9 19.9 11.4 5.2 4.0 6.2 17.3 36.5 43.3 25.4 1974 44.9 43.8 39.8 31.5 23.3 11.9 5.2 4.1 4.7 19.4 31.3 38.8 24.9 1975 43.9 43.7 40.2 31.5 20.4 10.6 5.1 3.6 5.2 17.0 31.4 41.3 24.5 1976 44.5 44.3 40.9 30.8 22.5 14.3 6.6 4.4 6.3 27.3 33.8 41.3 26.4 1977 48.1 43.3 38.6 29.8 19.7 11.5 5.8 4.1 7.8 19.4 30.5 43.4 25.2 1978 48.5 50.2 42.4 29.2 22.7 15.0 7.7 5.6 7.4 18.5 32.4 43.5 26.9 1979 48.8 46.7 42.9 34.5 22.3 11.1 6.5 4.6 5.7 14.2 27.9 36.9 25.2 1980 44.5 46.5 41.1 33.6 20.3 10.2 5.3 4.7 5.4 14.1 31.9 36.2 24.5 1981 41.3 42.9 42.2 33.2 21.6 13.3 6.1 4.8 4.5 16.2 33.9 43.0 25.2 1982 47.5 45.2 40.1 31.1 18.3 9.3 3.6 3.2 6.2 19.6 34.0 42.6 25.1 1983 46.0 46.1 40.1 30.2 21.3 10.8 4.6 3.8 5.5 17.9 31.7 43.5 25.1 1984 44.9 43.8 40.1 29.6 17.3 7.3 3.6 2.7 4.1 16.4 32.8 41.5 23.7 1985 48.1 46.5 42.4 31.8 21.8 12.4 4.9 3.2 4.5 18.0 39.1 44.6 26.4 1986 44.7 46.1 38.2 30.4 20.0 10.4 4.4 3.2 6.1 17.1 34.0 40.2 24.6 1987 46.3 44.8 42.7 29.7 17.8 12.2 5.5 3.1 4.8 13.5 32.5 41.7 24.6 1988 46.8 44.2 38.7 27.4 18.8 7.8 3.6 2.5 4.3 13.1 30.6 40.2 23.2 1989 44.8 43.2 37.8 28.8 18.1 9.2 4.2 2.6 6.2 16.5 33.0 43.9 24.0 1990 44.6 43.0 36.5 27.3 16.3 6.4 3.3 2.6 3.9 14.7 29.7 43.9 22.7 1991 45.1 44.6 38.1 28.4 18.7 9.9 4.1 3.4 4.5 16.7 34.6 41.7 24.1 1992 44.9 42.2 37.7 28.1 17.7 10.0 3.9 2.8 5.3 16.2 34.3 44.6 24.0 1993 45.6 44.2 39.3 27.7 18.0 8.2 3.7 2.8 6.0 18.8 37.7 42.7 24.6 1994 44.1 44.7 38.1 28.2 18.5 9.3 4.0 3.1 4.9 14.5 32.2 42.1 23.6 1995 45.2 41.8 37.4 32.2 19.3 9.5 4.1 4.0 6.5 17.2 33.3 43.5 24.5 1996 46.0 43.9 40.5 32.8 20.3 10.5 4.4 3.0 6.7 19.7 35.5 40.6 25.3 1997 45.3 44.1 37.8 31.1 19.7 9.5 4.8 3.9 6.7 17.4 34.9 43.1 24.9 1998 44.7 43.5 40.7 30.0 17.8 9.4 4.3 3.5 5.1 18.9 34.1 42.3 24.5 1999 43.3 42.6 38.9 29.1 18.3 8.2 3.1 2.3 5.1 18.0 33.2 42.1 23.7 2000 46.4 43.8 38.0 27.7 18.6 9.1 3.0 2.5 7.0 17.8 34.7 43.1 24.3 2001 45.3 43.8 39.0 28.3 16.4 7.4 3.0 2.3 5.7 17.9 31.1 44.0 23.7 2002 44.9 40.9 35.5 29.4 18.2 8.1 2.9 2.5 5.4 23.0 35.5 44.5 24.2 2003 46.3 46.5 39.7 30.7 19.4 9.3 2.8 2.2 4.7 18.4 34.9 41.9 24.7 2004 46.1 43.5 37.4 28.4 18.8 9.4 3.1 2.1 5.5 20.2 33.1 42.7 24.2 2005 45.1 45.7 39.1 27.4 19.0 8.0 2.5 2.1 4.6 16.7 30.1 42.9 23.6 2006 46.1 44.3 39.0 28.5 17.9 7.7 2.8 2.1 4.1 19.8 33.7 41.2 23.9 2007 43.4 43.4 38.2 26.9 15.9 6.8 2.5 1.9 4.1 15.3 32.0 43.1 22.8 2008 48.5 44.4 36.1 30.8 19.9 7.4 2.2 2.0 3.6 14.7 32.2 42.0 23.6 2009 45.6 43.1 38.1 27.7 16.5 6.3 2.3 2.0 3.4 19.7 34.1 44.3 23.6 2010 46.7 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 45.6 44.4 39.3 29.9 19.2 9.7 4.2 3.2 5.3 17.6 33.2 42.2 STD DEV 1.5 1.7 1.8 1.9 1.8 2.1 1.3 0.9 1.1 2.7 2.2 1.9