The record for the biggest single day of snowfall in the U.S. goes to Silver Lake, Colorado, elevation 10,220 feet. In 1921, the area saw 75.8 inches of the white stuff in 24 hours! Down here at sea level, Oklahoma set a new 24-hour snowfall record in 2011 when 27 inches piled up in Spavinaw - Mickey Mantle's hometown. That's a lot to shovel out...