Mega-Tsunami Threat Looms as Cascadia Fault Builds Toward 9.0 Quake, Experts Warn
it’s not an issue ifHowever When.
The big one is coming, so to speak. And according to last work According to the Proceedings of the National Academy of Sciences, there is a 15% chance of a rupture in the Cascadia Subduction Zone within the next 50 years and a 29% chance of a rupture by 2100.
The Cascadia Subduction Zone, located off the Pacific Northwest, last erupted in 1700. According to experts, it is time for a new shakeup. When this happens, coastal communities could be devastated, with waves from a potential 9.0 magnitude earthquake reaching unimaginable proportions. We are talking about a wave that will wipe cities off the map.
“In the Pacific Northwest, the slow-motion collision of tectonic plates known as the Cascadia Subduction Zone has been creating tension for over 320 years,” says meteorologist Maiya May. “And when that tension is relieved, the resulting earthquake will likely have a magnitude of magnitude 9.0. That would be 45 times stronger than California’s most destructive earthquake of 1906. And the consequences defy imagination.”
Although the Cascadia Subduction Zone is located offshore, the destruction on land from such a large earthquake is expected to be devastating. And that was before the tsunami caused by the tremor was triggered and sent hurtling across the Pacific.
Related: Experts Warn: 1,000-Meter ‘Mega Tsunami’ Could Hit West Coast
West Coast, Japan, Hawaii; all within the impact area.
“Subduction zone earthquakes often cause sudden movements and changes in the ocean floor, triggering tsunamis large enough to wipe coastal communities completely off the map. Remember the Fukushima power plant disaster? In 2011, Japan was hit by a 9.0 magnitude earthquake similar to what we expect here.”
So how big will the tsunami from the Cascadia Subduction Zone be? It’s hard to say. Some estimates range from 100 to 1000 feet. But the thing about tsunamis is that it’s not always about size. Most of the time it looks more like a huge, relentless tidal wave.
“Situational awareness really comes into play if you’re on shore,” the video continues. “Not only are you facing an earthquake that will destroy buildings and bridges, you’re also facing a giant tsunami that will follow right behind you. High ground could save your life.”
Related: The Largest Tsunami Ever Recorded: Inside a 1,720-Foot Wave (Video)
This story was first published by . Surfer First appeared on April 3, 2026 News section. Add Surfer at: Preferred Source by clicking here.
