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.

Severe thunderstorms, flooding rainfall, damaging winds, wildfires, record temperatures and snow are all possible across the United States.

While tornadoes are rare in the region, certain areas are more prone to these destructive storms than many realize.

Here's an aerial view of the cleanup effort after a tornado touched down in the Pico Rivera area of Los Angeles County on Thursday.

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

Residents along Glencannon Drive were expecting rain. But instead they got a tornado that downed trees and damaged several homes.

The tornado early Thursday lasted 2 minutes and was around 1 mile long and 80 yards wide, officials confirmed.