A major storm continued to wallop much of Southern California on Thursday morning, bringing evacuation warnings, fears of mudslides and heavy mountain snow.

The tornado, creating gusts of up 85 mph, left a trail 80 yards wide and a mile long, damaging homes, plowing over trees, taking down power lines and rupturing water pipes, authorities said. It hit a mile west of the 605 Freeway.

The strongest wave of a powerful winter storm reached Southern California overnight, bringing flash flood warnings, dropping snow levels and a possible tornado. “Storms will likely produce