When will "The Big One" hit the U.S. West Coast? Nobody knows, but should it happen, science can give us a good idea of its ...

If and when a Cascadia Subduction Zone earthquake hits the Portland region, soil liquefaction could dramatically worsen the damage, leading buildings to tilt, roads to buckle and utility lines to ...

Since Monday evening, a cluster of at least 10 earthquakes – ranging from magnitudes of 3.1 to 5.8 on the Richter scale – have struck off the coast of Oregon. Alarms were raised, as this zone is home ...

A major earthquake hasn't struck any of California's biggest cities in more than three decades, but experts and officials say the so-called "Big One" is a matter of when, not if. And the risk is far ...