After being down “for maintenance” since I don’t know when (last summer maybe?), the Washington Association of Sheriffs and Police Chiefs has finally put their searchable database of Washington missing persons back online.
It appears to be pretty much the same database as before; I’m not seeing any particular changes jumping out at me. I wish they had more pictures. Like, what’s the point of listing a person on the internet as missing when there’s no photo of them?
I noticed there were QUITE a lot of people who disappeared in mid-May 1980 and were listed as “catastrophe victims”. I thought about this for awhile, then Googled “Mount Saint Helens eruption.” Yup, mid-May 1980. I don’t think any of those people are going to be found at this point, though one never knows.
The Charley Project Blog 
They have a NamUs link on the missing person if they are in NamUs.