For U.S. earthquake scientists, Japan's 'megaquake' warning renewed worries about when and how to warn the public if they find clues that the 'big one' might be coming for the West COast.

Since Feb. 18, Washington has seen seven earthquakes with a magnitude above 2.5, including the strongest earthquake to hit the state in five years, a magnitude 4.5 that struck Orcas Island early ...

In California, where the next "Big One" is an always-looming threat, some lessons learned from the 1925 Santa Barbara quake ...

Two more earthquakes, a 4.8 and a 3.7, have hit southern British Columbia since mid-February. A string of earthquakes is sometimes interpreted as a sign that a more significant earthquake is on ...

Large earthquakes could be forecast by early warning signs detectable months or even a year beforehand, seismologists have reported in a study. Scientists discovered that unique seismic signals ...

Southern California’s housing stock and propensity for earthquakes mean homeowners here need to pay special attention to foundations, chimneys and more. Here’s your guide to retrofitting. June ...

A string of earthquakes is sometimes interpreted as a sign that a more significant earthquake is on the way. Washington hasn’t seen a major earthquake since the 6.8 magnitude Nisqually ...

Two more earthquakes, a 4.8 and a 3.7, have hit southern British Columbia since mid-February. A string of earthquakes is sometimes interpreted as a sign that a more significant earthquake is on ...

Two more earthquakes, a 4.8 and a 3.7, have hit southern British Columbia since mid-February. A string of earthquakes is sometimes interpreted as a sign that a more significant earthquake is on ...