A major storm with heavy snow and record rain that's moving through Northern California has toppled trees, closed roads and prompted evacuations in some areas after knocking out power to hundreds of thousands of people in Washington and Oregon.

A third winter storm is on its way to California, with forecasts anticipating that it will hit the Golden State on Friday, only days after a bomb cyclone unleashed hurricane-force winds across the Pacific Northwest and an atmospheric river brought a deluge of rain and snow.