A cross-country storm will explode in strength as it moves over the central United States Friday, delivering extreme weather to millions through the weekend, including the chance of multiple strong tornadoes.

The setup Friday through the weekend is a dangerous one in parts of the South, Midwest and East. Some tornadoes could be strong and widespread damaging winds are also a major threat.

The tornado stemmed from a winter storm that brought heavy rain and powerful wind gusts to Los Angeles County.

A tornado touched down in a Los Angeles County neighborhood early Thursday morning, a rare event in Southern California. With 85 mph winds, the Oxnard tornado knocked down trees and damaged homes and cars in Pico Rivera at around 3:15 a.

An EF0 tornado touched down in Los Angeles County early Thursday morning, causing damage to a Pico Rivera neighborhood, the National Weather Service said.