Sierra Storm

Heavy snow is forecast for the Lake Tahoe region, just in time for the Christmas holiday.

A winter storm warning is in effect through Friday morning for the Lake Tahoe area, where forecasters say more than a foot of snow is possible.

Chains or snow tires are required on all mountain passes in the Sierra between Reno and California, including Interstate 80, and Highway 50.

The National Weather Service says snow levels will drop overnight to the valley floors across western Nevada, where one to three inches of snow is possible.