That's from the Rutgers University Global Snow Lab. By way of commentary, Jeff Masters says:
We live in the United States of Snow. A rare Deep South heavy snowstorm whipped across the southern tier of states yesterday, dumping six-plus inches of snow over portions of Louisiana, Mississippi, Alabama, Georgia, South Carolina, and North Carolina. Even Florida got into the act, with up to two inches recorded in the extreme northwestern Panhandle. The snowstorm left 49 of the 50 states with snow cover, according to an article by Associated Press. Hawaii was the lone hold-out. David Robinson, head of the Rutgers Global Snow Lab, said that 67.1% of the U.S. had snow cover on Friday morning, with the average depth a respectable 8 inches. Normally, the U.S. has about 40 - 50% snow coverage during the 2nd week of February. January had the 6th greatest snow cover in the 44-year record over the contiguous U.S., and December 2009 had the most snow cover of any December on record. The current pattern of record heavy snows over the the Eastern U.S. is primarily due to a natural oscillation in the Earth's climate system called the North Atlantic Oscillation (NAO).If one single person comments that this proves global warming does not exist, as God is my witness I will reach through the Internet and pop you right in the nose. I will then proceed to make a substantive argument as to why all this snow is actually just what you'd expect (in the short term) in a warming world, but I'd really prefer to not have to do that.