326TH Anniversary of the Cascadia earthquake in 1700

This week - 326 years ago - a massive earthquake shook the Pacific Northwest. Back then, there was no such thing as a seismometer. Here’s how scientists uncovered the date of the 1700 Cascadia quake ... and why preparedness matters today more than ever! For more about earthquakes, visit earthquake.ca.gov. And for more about tsunamis, visit tsunami.ca.gov.