2009–10 North American winter
The 2009–10 North American winter was one of the most active and prolific winter seasons on record in the United States and North America as a whole, and the most severe since the 1995–96 winter. Multiple winter storms and widespread arctic blasts throughout the winter led to an expansive snow cover, with the Weather Prediction Center (WPC) issuing summaries on a total of 20 significant winter weather events.
Source: Wikipedia — 2009–10 North American winter (CC BY-SA 4.0)