Two Shake Models for the 'Big One'

The University of Washington has some new graphics that show the level of shaking from two different Cascadia Fault scenarios. Check out, Simulations show how major 9.0 earthquake could impact Northwest — and what Seattle should fear.

Here's the simulation of the shaking. Watch the needle for Seattle react much more violently for the first scenario.

The Seattle Basin is mentioned in the description of shaking and how it will be amplified within the basin. Think of the south end of the basin being somewhere around Interstate 90, which is the general whereabouts of the Seattle Fault (another fault not to be messed with). See graphic below that illustrates the basin. The blue part is the basin and south of it there is "uplift" going on from eons of earthquakes.