High winds blow snow along Highway 13 near Burnsville, Minn., on Sunday, Feb. 20, 2011. The heavy snow and high winds across southern Minnesota caused scores of accidents, grounded hundreds of flights and forced some businesses to close early. (AP Photo/Star Tribune, Brian Peterson)

Photo by: Brian Peterson

High winds blow snow along Highway 13 near Burnsville, Minn., on Sunday, Feb. 20, 2011. The heavy snow and high winds across southern Minnesota caused scores of accidents, grounded hundreds of flights and forced some businesses to close early. (AP Photo/Star Tribune, Brian Peterson)