January 26 marked the 325th anniversary since the last earthquake struck the Cascadia subduction zone. Centuries later, the ancient quake has left clues for scientists to prepare for the next one.

An earthquake ... The Cascadia Subduction Zone is capable of generating "megathrust" earthquakes with magnitudes of 9.0 or higher. Such an event, which last occurred over 300 years ago, could ...

Pinpointing the evening of January 26th, 1700 as the date and time of our last great earthquake was a monumental accomplishment. At a magnitude 9, it qualifies as a megathrust event. The 300-year ...

The Pacific Northwest is at risk for a mega-earthquake because of the Cascadia Subduction ... One happening every few hundred years. It has been more than 300 years since the last Big One ...

The last massive earthquake ... the Cascadia subduction zone. "The sediments preserved on the bottom of Effingham Inlet resemble the rings of a tree," Dallimore said, explaining that each year ...