The entire US?
Blizzard of 1993 hit Florida, Georgia and Alabama.
2009:
“The region west and northwest of the Dallas-Fort Worth area saw blizzard-like conditions throughout the day Christmas Eve as up to 8 inches of snow fell in the region, according to the National Weather Service. Winds gusting at up to 65 mph drifted the snow as deep as 5 feet in some areas.”