Re: Redmond
Pompeii itself was not buried under lava, it was a mix of dense ash and sulfuric clouds. Areas close in to Mt Saint Helens suffered a similar fate, except it was mostly trees instead of a city. Portland was covered in a thick layer of ash, which I as a lad was paid what seemed at the time good money to shovel off of parking lots (with minimal breathing protection, it was different times).
So in short, Redmond could end up like Pompeii, or could end up under mud. Or a major quake from the offshore subduction zone could lead to a mega-tsunami, which is also a bit overdue.