In Washington, that’s ONLY if Seattle, Tacoma, and Olympia are destroyed and they move the capital to Spokane.
Even though the fault is way offshore, if we get that ‘full 9 rip’, I’ll definitely feel it here. Seattle and Tacoma will get major damage and the coast will be destroyed by tsunamis.
All the coast along the the Strait of Juan de Fuca and Puget Sound will be swept away from Vancouver BC to Tacoma WA.
The fault being offshore is irrelevant - a long lasting mega-quake will take out most of WA and OR as well as some of Northern CA.
“In Washington, that’s ONLY if Seattle, Tacoma, and Olympia are destroyed ...”
That very well could happen. Maybe not “destroyed”, but electrical out for 6 months, sewer and water out for a year. Before we learned of the Cascadia fault the emergency response was for Vancouver, B.C. to help Seattle and vice-versa, Seattle and Olympia and Portland, etc.
Now they have shifted the response to come from east of the mountains. So Spokane to Seattle, etc.
Airplanes with supplies will land at the big Boeing testing facility in Moses Lake. Then trucked to Snoqualmie Pass. I-90 at the pass has numerous bridges and elevated structures that will probably be compromised or destroyed.
Then helicoptered from the east side of Snoqualmie Pass and into Seattle and the Suburbs. Almost all of Seattle is only accessible over a bridge - so that should be interesting.
I know one guy that lives out in a small town on the Pennissula. He said the City Manager worked for awhile to develop evacuation plans, etc. After learning more and what they were up against, he quit his good job and moved to Spokane!
A lot of those places they won’t be able to evacuate everyone. The school kids probably if they keep all the buses near the school.
The elderly in the nursing home? They won’t even bother as they won’t have enough time.
Some of those towns will have only about 15 minutes from the time the earthquake starts to when the tsunami will hit. (And 5 of those minutes you are still hunkered under your desk.) Tsunami wave height could be from 20 to 60 feet on the coast. Seattle itself won’t see much of a tsunami.
However - if/when the Seattle fault goes (runs east-west below the stadiums in south Seattle, but not associated with the Cascadia fault) - then we very well could see major wave action and flooding in Lake Washington, Lake Union, etc.