if you get accepted you can choose to do your first year at a site other than seattle... spokane or pullman. you rank the sites on the secondary, did you do that already? based on what I've heard current students say, if you rank spokane as #1 you're almost sure to get it, because the majority of applicants want the seattle site.
if you're asking about interviews though, the FAQ says they do interviews for WA residents and OOS applicants in Washington, and the two interview sites in Washington are Seattle and Spokane. So there's a good chance you can interview in Spokane as well. If you didn't indicate that on your app somewhere, it might be helpful to send them an email explaining your situation to avoid them assigning your interview to Seattle and then having to change it.
Just curious, if you like in Spokane, why are you OOS? School? Good luck!