TRUCKEE - A "high" avalanche advisory for the High Sierra backcountry was issued this morning through 8 a.m. Tuesday by the U.S. Forest Service in Truckee. For the same period, another 6 to 12 inches of snow is predicted at lake level and 1 to 2 feet above the 7,000-foot elevation, said Ray Collins, a meteorologist with the National Weather Service in Reno. High winds - "80 to 100 miles (per hour) over the ridges" - are expected to accompany the snow, Collins said.