This Is What Northern California Looks Like After Earthquake

— -- Residents of northern California woke up to cracked streets, homes on fire and crumbled buildings after a 6.0 magnitude earthquake hit the area about 3:20 a.m. local time early Sunday morning.

The earthquake's epicenter was located about six miles south-southwest of Napa and 51 miles west-southwest of Sacramento. ABC News station KGO in San Francisco reported several fires and damaged buildings in Napa. More than 15,000 customers were without power, according to Pacific Gas and Electric Company.

Northern California Shaken by 6.0 Magnitude Earthquake

Dozens of people were being treated at Queen of the Valley Medical Center in Napa, including a handful of critical cases, officials said.

These photos showed the destruction caused by the largest earthquake to hit the Bay Area since 1989.