Snow covers the ground in a solid swath from eastern Arizona to the edge of a massive winter storm in Indiana and Michigan in these images from February 2, 2011.
This image of the United States from December 8, 2009, shows a blanket of snow across the West along with a thick swirl of storm clouds over the Great Plains from North Dakota to Oklahoma.
A severe winter storm hammered the Midwestern United States on December 1, 2006, icing roads, grounding flights, and leaving more than two million homes and businesses without power.