The National Weather Service says whiteout conditions at mountain passes are possible. Meanwhile, significant travel delays may occur due to traffic accidents caused by slick roadways. There will also be periods where gusty winds could bring down branches and trees and cause local power outages.
Snow is expected initially at 4,500 to 6,000 feet, but will lower to 2,500 to 3,500 feet. Heavy snow with 1 to 2 feet are expected and light snow of 1 to 3 inches is possible in the foothills from Friday through Saturday.
Light to moderate precipation is expected throughout the Valley.
6AM - Chain controls are going up! Snow will continue to intensify. Avoid travel over Sierra passes if possible until the roads improve. pic.twitter.com/ibqhNgYY9V— NWS Reno (@NWSReno) December 23, 2016
TRAFFIC ALERT. West Main St near Alta st will be closed for several hours due to a large tree that has broken... https://t.co/GCF5Nxf9Wu— Grass Valley Police (@GrassValleyPD) December 23, 2016