A 7.0 magnitude earthquake struck near Humboldt County in California, and tremors were also felt in Oregon. Residents of Rio Dell, Eureka, Santa Rosa, and Sacramento reported strong shakes.

Northern California residents could feel aftershocks as high as magnitude 6.0 for months following Thursday morning's magnitude 7.0 earthquake that hit offshore in Eureka, California. The main ...

Crews in Eureka, the biggest city ... More recently, a tsunami from a 2011 earthquake in Japan caused about $100 million in damages along the California coast, much of it in Crescent City.

The Northridge Earthquake in Southern California happened just one year earlier, in 1994. The two events killed 6,400 people, injured 45,000, and left a half million people homeless.

USGS map highlights earthquake risk zones. Blue boxes indicate areas of high activity of human-caused earthquake due to deep bore fluid injection. Disclaimer: AAAS and EurekAlert! are not ...