Breaking News – 322nd Year Anniversary of Cascadia Subduction Zone Earthquake/Tsunami

2022-02-26T21:39:05+00:00

Breaking News - 322nd Year Anniversary of Cascadia Subduction Zone Earthquake/Tsunami   By Nancy Aird January 26, 1700, at 9:00 pm, the last Cascadia Subduction Zone megathrust earthquake (CSZ) was estimated at magnitude 8 or 9, and the subsequent tsunami devastated the Pacific Northwest. How are we able to estimate the magnitude of the fault slippage, date, and devastation without modern seismic data? Indigenous knowledge, geo-forensics, and written history from other parts of the world provided clues. YouTube.com, “Tsunami Preparedness Oral History of the Hoh,” features Hoh elder Viola Rieke telling the story of Thunderbird and Whale roles in tsunamis. [...]