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 ...

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.

Of particular concern was a traffic snarl around downtown Eureka ... of the California State Senate Mike McGuire noting that speed is essential for disasters. “Within minutes of the earthquake ...

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 United States Geological Survey reports a preliminary magnitude 2.5 earthquake struck near Pittsburg, CA on Thursday. The quake hit at 11:07 PM local time at a depth of 17 kilometers.

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.

When Hao Zhang of the University of Southern California and colleagues re-examined the aftershock sequence of the May 2015 earthquake, they did not find evidence for a 751-kilometer-deep ...