Vice's Motherboard is running a 5 part story about what will likely happen when the Cascadia Subduction Zone in the Pacific Northwest cuts loose. It'll be like the Japanese event, but probably a bit worse, depending on where you are. This piece looks at the events as they unfold in Portland, OR. It's very well done and the author has quite a few footnotes with info.
Five Minutes | Motherboard
Five Minutes | Motherboard