Magnitude 6.3 Quake Off The Oregon Coast Raises Concerns That The Cascadia Subduction Zone Could Soon Rupture Prison Planet.com Posted on August 30, 2019 Posted in Aggregated No Comments Tagged with Sci Tech Michael Snyder | We haven’t seen this sort of seismic activity on the west coast in a very long time. Share this:Share Share on Facebook (Opens in new window) Facebook Share on Reddit (Opens in new window) Reddit Share on X (Opens in new window) X Share on LinkedIn (Opens in new window) LinkedIn Email a link to a friend (Opens in new window) Email