'Notable' 6.4-magnitude earthquake strikes California coast

A "notable" 6.4-magnitude earthquake struck the northern coast of California early Tuesday, the U.S. Geological Survey said.

Preliminary data placed the center of the quake along the Pacific coast about 7.5 miles away from Ferndale, California, USGS said. The quake was recorded at about 2:34 local time.

A tsunami wasn't expected, according to the U.S. National Tsunami Warning Center, which reported the quake at a preliminary magnitude of 6.1.

More than 68,000 customers -- about 69% of those in Humboldt County -- had lost power as of about 4:15 a.m....