RENO, Nev. (AP) — The main highway from San Francisco to Reno remains closed for a third day due to record-setting snow in the Lake Tahoe area after a winter storm blasted across northern California and Nevada.

Snow-choked Interstate 80 shut down Sunday from the Nevada state line to Placer County, California, although Caltrans said U.S. 50 reopened late Monday for vehicles with chains or four-wheel drive.

At Donner Pass, a University of California, Berkeley laboratory has tallied a record snowfall for December, breaking a record set in 1970. Officials in both states extended avalanche warnings Tuesday for areas north and west of Lake Tahoe