I remember reading about this years ago.
Still don't know what I'm supposed to do with this information.
I don't live on that coast and I don't have anyone close to me who does.
It's like the super-volcano or a meteor strike or the planet shifting it's poles or some super nova taking out our electronics and the like. Out of my hands.
So I just throw it on the pile of "what-can-I-do-about-it?" items.
Sure, there might be a huge economic impact from an avalanche there; but I live in an agricultural area that grows abundant foodstuffs, usually has plenty of water, generates more hydro-power than we can use, and has numerous folks who know how and can do to keep things at least limping along.
So we'll mostly be fine.