Dutchsinse.com mapped some of the undersea volcanos that were erupting. Showed satellite photos of plumes. Someone reported seeing pumice washed ashore Oregon Coast.
I forgot about that. Thank you. Yes his website includes instruction as to how to forecast earthquakes (his full methodology). He hopes to educate interested parties to forecast earthquakes.
Something I watch is “Realtime Tremor maps” based on what he has shown using this tool. Those are worth looking up on his website and then bookmarking on your browser. The short version - tiny little tremors are normal and happen along Cascadia and if they should stop (the plate become locked for a few days - no movement) long enough he would warn for a very very large EQ along the cascadia range. His last few months re tremors indicate that a vast length of the west coast of North America is moving quite a bit. His motto is don’t be scared, be prepared and some videos talk about preparedness - hopefully his website does too.
Here’s the tremor map website I now use: http://tunk.ess.washington.edu/REALTIME/