Volcanoes give you a lot of warning and most in Washington are not located close to major population centers. The one exception is Mount Rainier, which is on the Decade Volcano list. Technically Glacier Peak is a similar distance from Seattle but it is a much smaller volcano and risk of damage is much lower. Historically the Cascade volcanoes only erupt something like 2-3 times per century and most are minor. It isn’t something anyone really worries about. Much higher risk from earthquakes.

I lived down range of Mount St. Helens when it had its major eruption in 1980. It was a regional disaster but the recovery was relatively quick and few people died despite the epic scale of it.

https://en.m.wikipedia.org/wiki/Decade_Volcanoes

Tahoma is the most potentially destructive one. some projections suggest lahar flows reaching downtown Seattle in a worst-case.

https://pubs.usgs.gov/publication/ofr98428

https://www.usgs.gov/media/images/mount-rainier-volcano-haza...

Here in seattle, volcanoes feel like an afterthought attached to the thing that's actually scary, which is the Cascadia Subduction Zone[1]. There's an hour long presentation from CWU [2] that's dry but fascinating, and pretty free of popsci FUD. When the CSZ eventually goes, it's gonna be truly catastrophic.

[1] https://en.wikipedia.org/wiki/Cascadia_subduction_zone

[2] https://www.youtube.com/watch?v=UJ7Qc3bsxjI