24.5" fell in the winter of '88-'89.
1989
Today, May 21, 2010, exactly 00.00000" of snow fell in Chicago, IL.
why snow fall occurs
more and more snow falls on it and the snow gets too much weight on it and falls
It all depends on how much evaporation happened that month.
90-100"
it makes snow fall over for about 5 seconds
Quite a lot.
It snowed on 2008 and 2009 on Christmas day
Precipitation of snow on the ground.
35.6" fell in the winter of 2006-2007.
11/2 inches