This should have West Coasters shaking in their shoes.

The Cascadia Subduction Zone runs for almost 600 miles along the coasts of California, Oregon and Washington in the US and British Colombia ... the fault is split into four segments.

A moderately strong, 5.2-magnitude earthquake struck in Southern California on Monday, according to the United States Geological ... to update the shake-severity map. The San Diego County Sheriff ...

The US Geological Survey estimates ... “Unfortunately, earthquake prediction remains an extremely challenging endeavor,” ...