EF1 tornado in Nevada County, California

The Lake of the Pines Tornado: Supercells developed behind the cold front along a north-south boundary in the middle of the Central Valley, where both instability and shear were large. The Fire Department reported a tornado touchdown at approximately 4:30pm (PST). The estimated damage path length was approximately 4 miles with wind speeds estimated at 90-100mph. The tornado touched down near highway 49 and Combie Rd and snapped tree trunks of 1 to 3 ft in diameter. Many trees were uprooted and a few power lines were blown over. Some buildings were also badly damaged in the area.

A strong low pressure system moved through northern California, bringing several feet of snow to the mountains, significant rainfall to the valley and foothills, and tornadic supercells in the valley.