It's very difficult to describe how bad this earthquake is expected to be for a large swath of the Pacific Northwest when it happens again (and it's when, not if). It will be similar to Fukushima except absolutely nothing in the region is designed for earthquakes of this magnitude, not to mention the expected tsunami. Given the massive investment required and lack of motivation to do it, there will be almost no preparation in advance. It is not unreasonable to predict it will be the biggest natural disaster in American history by orders of magnitude.

Here is the best attempt I've seen so far to novelize what will happen in Portland. While obviously speculative, it's all very much based on the evidence at the time and I think does a better job of describing what will happen than just reading the dry (and usually incorrect because they assume supporting infrastructure) reports from the utility companies on how long they think it will take to, for example, repair the transmission lines. If you live in Portland, I implore you to sit down for an evening and take the time to digest this:

https://www.vice.com/en/article/8q8gyx/first-five-minutes-bi...

Don't panic, but take this seriously, this is a scientifically verified thing that will happen. It is never too early to consider things like earthquake retrofitting your home (bolting the frame to the foundation) and preparing emergency supplies like properly stored food and water. If you're on the coast, memorize your escape route, you won't have time to look it up and your phone won't work anyways.