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The Express Gazette
Monday, September 21, 2026

Simulation Reveals Potential 100-Foot Tsunami Threat to West Coast

A new animation visualizes the catastrophic consequences of a megathrust earthquake beneath the Pacific.

US Politics 2 hours ago
Simulation Reveals Potential 100-Foot Tsunami Threat to West Coast

A recent simulation has brought to light the potential for a catastrophic tsunami along the U.S. West Coast, illustrating the devastating power of a megathrust earthquake. The animation, shared by cutawaynature on Instagram and reported by Surfer.com, depicts the seismic and oceanic forces at play when two tectonic plates lock and then rupture.

The simulation visualizes the buildup of immense pressure along a fault line over decades or even centuries, often with no surface indicators. This stored energy is released when the overriding tectonic plate abruptly snaps upward, causing the seabed to lift and displace a massive column of water.

Initially, the tsunami appears as a subtle swell traveling across the deep ocean. However, as the wave approaches shallower coastal waters, its destructive potential becomes apparent. The simulation shows the sea dramatically receding from the shore before surging inland.

The visual breaks down the complex geological event into understandable stages, highlighting how pressure and motion can combine to generate such a powerful natural disaster. The creator's description emphasizes the raw elements involved: "No narration. No music. Just rock, water, pressure and motion."

This visualization serves as a stark reminder of the geological hazards present along the West Coast, particularly concerning the Cascadia subduction zone, which is known for its potential to generate large megathrust earthquakes and subsequent tsunamis.


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