Magnitude 6.4 earthquake rocks Northern California, leaving tens of thousands without power

A magnitude 6.4 earthquake shook parts of Northern California early Tuesday, jolting people awake, the U.S. Geological Survey said, and tens of thousands were without power afterward.

No injuries were immediately reported following the earthquake, which occurred about 2:34 a.m. near Ferndale, a small community about 213 miles northwest of San Francisco.

Following the earthquake, more than 66,000 customers were reported to be without power in the surrounding area, according to poweroutage.us, which tracks outages across the country.

Video posted to social media appeared to show the aftermath of the quake in Ferndale.

The California Highway Patrol reported the Fernbridge, a 1,320-foot-long concrete arch bridge that crosses the Eel River, has cracks in four places, CBS Bay Area reported.

The earthquake came just days after a small magnitude 3.6 earthquake struck the San Francisco Bay Area, waking up thousands of people at 3:39 a.m. Saturday and causing minor damage.

That earthquake was centered in El Cerrito, about a 16-mile drive to downtown San Francisco.