Cascadia Earthquakes

This is an article about the likelihood of a major earthquake occurring in the Pacific Northwest.  

"The Cascadia subduction zone is where two of Earth's tectonic plates meet in an epic collision and one haltingly slides below the other. The Cascadia Fault stretches for almost 700 miles (1,100 kilometers) from Northern California up to Canada... the Cascadia subduction zone has not experienced a major earthquake since 1700, when an estimated 9.0-magnitude earthquake generated an enormous tsunami that killed trees in Puget Sound and traveled across the ocean to Japan." 

The small tremors that have been occuring off the coast recently indicate that an earthquake could happen at anytime. "You have these small events every 15 months or so, and a magni1700+9 earthquake every 500 years. We need to know whether you want to raise an alert every time one of these small events happens," Segall said in a statement."