All the coastal cities have evacuation protocols and dozens of warning horns.
School kids have tsunami drills where they have to walk up big hills next to their schools.
We are waiting for the Big One. The subducting Pacific Coast Plate has been locked under the Continental Plate for a couple centuries. It will not be pretty when it finally slips.
Did I forget to mention that if Mount Rainier ever blows out on the northwest side, it will instantly melt trillions of pounds of snow which will flow down a river basin right into downtown Tacoma?