Strong Sierra snowstorm for end-of-week truckers

A Pacific storm will bring periods of moderate to heavy snowfall Thursday and Friday to the Sierra Nevada, as well as the southern Cascades. Travel delays and chain controls will impact mountain travel.

Snow levels Thursday will range from 4,500 to 5,500 feet in northern California and 5,000 to 7,000 feet in eastern California. Cooler air Thursday night and Friday will drop snow levels to around 3,000 to 4,500 feet in northern California and 4,000 to 6,000 feet in eastern California. Most of the accumulating snow will occur Thursday and Thursday night.

The National Weather Service has issued a winter storm warning for the high elevations of Trinity and Siskiyou counties, California, which includes the Mount Shasta region. This is where drivers may hit some of the worst conditions, with up to 12-plus inches of accumulation and wind gusts up to 60 mph. Occasional whiteout conditions are likely.

Other high elevations of northern California, as well as eastern California, could see snowfall totals exceeding 12 inches and/or blowing snow. This will impact places such as Lassen Volcanic National Park, the western slopes of the Sierra Nevada, Scott Mountain, Devils Postpile, Florence Lake, Lake Thomas Edison, Tuolumne Meadows and Shaver Lake.