UPDATE, 9:25 a.m. EDT: NBC News reported more than 50,000 people are now without power following the earthquake.


Original Story:

A magnitude-6.0 earthquake hit Northern California early Sunday, according to the U.S. Geological Survey. The USGS said the quake struck at 3:20 a.m. PDT (6:20 a.m. EDT) four miles northwest of American Canyon and 51 miles west-southwest of Sacramento.

There were no immediate reports of injuries. However, the Pacific Gas and Electric Co. unit of the PG&E Corp. (NYSE:PCG) indicated as many as 15,000 of its customers in the region are without power as a result of the quake:

Some Twitter users reported there had been “serious damage,” although those reports are yet to be confirmed:
This is a developing story. Check back for updates.