* WHAT...Heavy snow possible. Snow accumulations 15 to 20 inches above 8,500 feet conceivable. Total snow 10 to 15 inches from 7,500 feet to 8,500 feet possible. Snow accumulations 5 to 10 inches from 6,500 feet to 7,500 feet conceivable. * WHERE...Ruby Mountains and East Humboldt Range in Elko County. * WHEN...From Saturday afternoon through Sunday evening. * IMPACTS...Snow covered roads are expected on State Route 229 through Secret Pass, up into Lamoille Canyon, and across Harrison Pass in the southern end of the Ruby Mountains.