Nick Zentner of Central Washington University did a really good talk about this article and some of it seems overblown, specifically the "west of I5 will be toast."
They've placed GPS sensors throuout the PNW and one of the more interesting things is that Oregon and Washingtons land is working in a spiral, and the land is moving in a circular pattern. Also that the hot spot that creates Yellowstone used to be off the Oregon coast and traveled through Oregon, and Idaho before it reached where it currently is. It's left a trail of calderas that they're only now discovering. The hotspot stays in the same spot, but the earths crust moves over it changing it's position over time.