Heavy rain from thunderstorms was produced by a very cold and unstable storm from the north. Several debris flows occurred. In the Santiago burn area of eastern Orange County, extensive damage was done to homes and businesses. In rural northeast Moreno Valley, 28 residences were flooded and damaged. Minor damage occurred in the Witch Creek burn area around Ramona. Snowfall of several inches hit the mountains, even as low as 5000 feet elevation. Thunderstorms deposited several inches of hail from Redlands to Perris. Several reports of nickel size hail in Moreno Valley and dime size hail in Murrieta. Snowplows were called to clear the hail. Awnings, trees and vehicles were damaged. Four tornadoes touched down near Moreno Valley. One tornado was rated EF-2, which was the strongest California tornado since the Sunnyvale tornado in 1998, and was on the ground for an exceptional 21 minutes. Nine railroad cars were derailed. A semi truck was lifted 30-40 feet in the air and severely injured the driver. Damage was done to roofs, trailers and sheds.