Overview

• The National Weather Service issued Winter Storm Warnings for the Sierra crest, including Interstate 80 over Donner Pass, with advisories around Lake Tahoe through Wednesday morning.
• Forecasts call for roughly 2 to 3 feet or more at the highest summits, up to 16 inches above 7,000 feet in Mono County, and brief snowfall rates of 1 to 2 inches per hour.
• Winds near 70 mph are possible along ridgelines, raising risks from falling branches and making travel through Sonora and Tioga passes very difficult.
• California Highway Patrol in Truckee reported a vehicle off the road near Donner Summit and urged drivers to expect slick conditions.
• Caltrans is preparing to pause three I‑80 projects near Colfax, Yuba Pass and Soda Springs and advises motorists to carry chains and supplies, as the same storm that flooded parts of Southern California brings early-season snow nearly two weeks ahead of typical timing in some Tahoe areas.