Quincy, California – Travel across the northern Sierra Nevada is expected to deteriorate rapidly late Monday night as a multi-day winter storm brings accumulating snow to higher elevations, setting up difficult driving conditions through midweek.
According to the National Weather Service in Sacramento, a Winter Weather Advisory remains in effect from 10 p.m. Monday until 4 p.m. Wednesday for areas above 5,000 feet in Western Plumas County, Lassen Park, and the west slope of the Northern Sierra Nevada. Snow totals of 4 to 10 inches are expected above 5,000 feet, increasing to 10 to 18 inches above 6,000 feet, with locally higher peaks seeing close to 2 feet of accumulation.
The heaviest snowfall is expected Tuesday afternoon into Wednesday morning, when mountain travel could become very difficult. Routes near Quincy, Chester, and Blue Canyon are likely to see snow-covered roads, reduced visibility, and extended travel delays. Chain controls are likely along higher-elevation highways as conditions worsen.
Caltrans crews are preparing for round-the-clock operations, but drivers are urged to avoid unnecessary mountain travel during peak snowfall periods. Anyone traveling should carry chains, extra supplies, and check road conditions through Caltrans QuickMap or by calling 5-1-1 before departure.
Snow tapers late Wednesday afternoon, but hazardous conditions may persist beyond the advisory period. Additional winter advisories remain possible if snowfall intensifies or lingers longer than expected.
