Inclement weather has plagued areas of the U.S. in the first half of the weekend, with dangerous conditions including heavy snow, a major ice storm and unsual tornado activity. An ice storm beginning Friday created treacherous driving conditions across Iowa and eastern Nebraska. More than 33 inches of snow was reported near Orchard Park, New York, which is often a landing point for lake-effect snow. On Saturday, a tornado touched down in Scotts Valley, California, causing damage and several injuries. In San Francisco, a storm damaged trees and roofs and prompted a tornado warning, which was a first for a city that has not experienced a tornado since 2005.
