DONNER SUMMIT -- Conditions near Donner Summit Tuesday night alternated between rain and snow and freezing fog; a preview of what is to come over the next few days.
A series of storms will continue to bring rapidly changing conditions to the mountains through Friday.
The forecast calls for as much as two feet of snow to fall above the 7,000-foot elevation, most of which will fall between Thursday and Friday. Snow levels will likely drop to lower elevations near 5,000 feet on Friday.
Mountain travel may be restricted at times to vehicles with four-wheel drive or tire chains. Travelers are advised to expect delays, and come prepared with full tanks of gas, warm clothes, blankets food and water.
Drivers are also cautioned to be alert for potential rock slides.
“Just take your time," advised Caltrans supervisor Pat Day. "If you don’t need to travel, I wouldn’t in the heavy storms.”