RENO, Nev. (AP) — A winter storm packing powerful winds, heavy rain and potentially several feet of snow is blowing into the Sierra Nevada. On Saturday, it shut down mountain highways, toppled trees and triggered flood watches and avalanche warnings from the coast of Northern California to Lake Tahoe. Authorities said a 70-mile stretch of eastbound U.S. Interstate 80 was closed “due to zero visibility” from Colfax, California to the Nevada state line. More than 250 miles of the Sierra remain under a winter storm warning at least until Sunday night from north of Reno to south of Yosemite National Park. Up to 4 feet of snow is expected in the upper elevations around Tahoe. (Photo: AP)