There are people who follow this stuff very closely, especially if they live in the target zone of the Pacific Northwest. I don't know how close Jazz Shaw of hotair.com is to the danger zone, but he's got a fine article about a training session scheduled to take place next week to help prepare responders for a potential catastrophe.
The Cascadia Subduction Zone is a 620 mile fault line running off the West coast from Northern California to Southern Canada. It's over due for a quake, and when it happens, a tsunami will likely follow.
Here's Jazz Shaw in Pacific northwest stages drill to prepare for massive tsunami:
The fault line is only a short ways off the coast and if the geologic record is any indicator, when it decides to snap it does it in a big way. We could readily be talking a magnitude nine earthquake which will shatter much of mankind’s wonderful constructions along that region. But then, perhaps less than thirty minutes later, a wall of water like something out of a disaster movie will come roaring ashore and wipe out everything in its path.
That’s barely enough time to clear out a gas station, say nothing of the major population centers from northern California to the Canadian border. From the projections I’ve seen, the dead would likely number in the tens of thousands at least and the infrastructure will be pretty much wiped out. No power, no cell towers, no running water, and whatever isn’t collapsed or underwater will likely be on fire. So what sort of precautions are they taking? As I said, you’re not going to get any significant number of people to high ground in that amount of time so I assume it’s mostly rescue and recovery missions. Ham radio is a great start, but I assume they’ll be telling people how to have a bug out kit ready and some stores of food and potable water to keep them alive (assuming they survive the initial onslaught) until they can be evacuated to some intact territory.
Californians have been bracing for earthquakes for years, and the big one has yet to strike. But maybe they'll all strike at about the same time. Here's Wikipedia:
Studies of past earthquake traces on both the northern San Andreas Fault and the southern Cascadia subduction zone indicate a correlation in time which may be evidence that quakes on the Cascadia subduction zone may have triggered most of the major quakes on the northern San Andreas during at least the past 3,000 years or so. The evidence also shows the rupture direction going from north to south in each of these time-correlated events.
One more reason for Californians to move East. But just so you know, the East coast isn't entirely off the hook. See Atlantic hurricane season: La Nina may fuel most active season in 3 years.