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

The storm moved through the Southland early Thursday amid evacuation warnings and fears of debris flows, bringing a heavy dose of rain over a short period of time and causing a rare tornado in Pico Rivera.

But why wasn't a major alert sent to all the residents nearby?According to Doctor Ariel Cohen with the National Weather Service, the tornado hit at about 3:15 a.m. It touched down in Pico Rivera and barreled along a one-mile path with a width of approximately 80 yards.