Quakprep.

But seismologists disagree. The Cascadia Subduction Zone (a 700-mile fault off the Pacific Northwest) has a 37% chance of producing a magnitude 8.0+ event in the next 50 years. In California, the probability of a magnitude 6.7 or higher earthquake in the next 30 years exceeds 99%.

Lower frequency, higher intensity potential. Soil here is older and transmits seismic waves farther. Expect liquifaction and building collapse in Memphis, St. Louis, and Evansville. Focus on strapping water heaters and bolting sill plates to foundations. quakprep.

This is where enters the conversation.

Tsunami risk after shaking. If you feel violent shaking for 20+ seconds and you are near the coast, do not wait for a warning. Walk to high ground immediately (100 feet elevation or 2 miles inland). But seismologists disagree