A storm system is expected to bring heavy rainfall and mountain snow to Southern California late Wednesday night into Thursday. Heavy downpours paired with thunderstorms and gusty winds will bring

The storm, which forecasters said could produce tornadoes, is expected to strengthen Friday and move towards the central US.

A powerful storm dropping drenching rain on flood-prone Southern California is raising concern among forecasters that it could produce a dangerous, widespread outbreak of tornadoes, damaging winds and fires along with a blizzard as it crosses the entire United States in the coming days.