When an earthquake rips along the Cascadia Subduction Zone fault, much of the U.S. west coast could shake violently for five minutes, and tsunami waves as tall as 100 feet could barrel toward shore.

On Jan. 26, 1700, an earthquake on the Cascadia fault caused the forest to lurch downward by more than 3 feet. Soon after, a tsunami perhaps 100 feet high barreled through at 20 or 30 mph.

When the fault rips, experts have said, it will precipitate the worst natural disaster in the nation’s history.A 2022 state and federal planning exercise for a Cascadia earthquake predicted ...

An earthquake rattled the Cascadia fault 325 years ago. Here’s what we know about the massive quake by: Michaela Bourgeois. Posted: Jan 28, 2025 / 08:00 AM PST.

PORTLAND, Ore. (KOIN) – A major earthquake waiting to strike the Cascadia Subduction Zone isn’t the only natural disaster looming in the Pacific Northwest, new research shows. A powerful quake ...

Earthquakes The Cascadia Subduction Zone looks a little different than researchers thought. ... a splay fault could send a tsunami hurtling toward the coast within 10 or so minutes.

The Cascadia Subduction Zone was not widely studied until the 1980s and 1990s, and earthquake standards for construction near the subduction zone and the Seattle Fault weren't incorporated into ...

The Cascadia fault, where the Juan de Fuca plate slips beneath the North American plate, is capable of producing megathrust earthquakes. These events not only trigger devastating tsunamis, but ...

Stories and news about Cascadia fault from GeekWire. Toggle search box ... Earthquake experts say current building codes don’t reflect the riskiest features of the Seattle area’s geology ...

When an earthquake rips along the Cascadia Subduction Zone fault, much of the U.S. West Coast could shake violently for five minutes, and tsunami waves as tall as 100 feet could barrel toward shore.