White out conditions were seen across the Sierra Nevada Mountains as heavy winds affected visibility throughout the state. | Credit: Brian Walker
White out conditions were seen across the Sierra Nevada Mountains as heavy winds affected visibility throughout the state. | Credit: Brian Walker

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Daniel Swain for San Francisco Chronicle — Tahoe travel: Here’s what to expect on highways as multiday Sierra snowstorm arrives

UCLA climate scientist Daniel Swain discusses the major Sierra snowstorm headed towards the Western United States for San Francisco Chronicle. “It will be a big Sierra storm at the passes, but not so much below the passes,” Swain said.