I considered moving to Portland, until I read about how a big earthquake would pretty much completely wipe it out:
http://www.oregonlive.com/earthquakes/index.ssf/2015/07/the_...
http://www.oregonlive.com/earthquakes/index.ssf/2015/07/the_...
Expanding highways makes traffic worse.
Avoid living or working in brick buildings (they fall apart).
If worried, perhaps avoid high tsunami risk zones (that lack high ground, roads are less useful since they will be unusable during large earthquakes).
If you catalog your risks, earthquake death or disability is probably low in scheme of things.
From my experience, if you work in software with a laptop, earthquakes are not likely to affect your work too much.
Unless you have a neurotic partner, in which case avoid earthquake zones, because they lose the plot when the earth takes control.