Is this spot in the tsunami zone?
Type an address and see whether Oregon's worst-case tsunami model floods it, how deep, and how little time it gives — evacuate on any long or strong quake regardless.
Astoria sits on the Cascadia Subduction Zone. In a local quake the first tsunami waves can reach the low ground in minutes — too fast for any warning to travel. Type an address to see whether Oregon's worst-case model floods that spot, how deep the water gets, and how little time it gives — then learn the walk to high ground from there.
If the ground shakes hard or for a long time, go
For a local Cascadia earthquake there is no siren and no app in time — the shaking itself is the warning. Drop, cover, and hold on; when it stops, walk to high ground or inland right away. This tool tells you what the model says about a spot; it is not an alert.