Regions: Return to the Earthquake Reports page. Sorted by Magnitude Sorted by Year Sorted by Day of the Year Sorted By Region Cascadia subduction zone General Overview 1700.09.26 M 9.0 Cascadia’s 315th Anniversary 2015.01.26 1700.09.26 M 9.0 Cascadia’s 316th Anniversary … Continue reading ER: Sorted by Region!