A 9.0 megathrust earthquake along the Cascadia Subduction Zone would be one of the most destructive disasters in North American history. Scientists warn the 1,000 km fault from Vancouver Island to Northern California is capable of minutes of violent shaking, massive ground rupture, and a tsunami arriving within 15–30 minutes. This 15-second cinematic simulation shows how quickly the event could unfold — from the violent plate rupture offshore to the shaking in major cities like Seattle, Portland