Add Yahoo as a preferred source to see more of our stories on Google. Workers check damage to Interstate 880 in Oakland after it collapsed during the Loma Prieta earthquake in October 1989. (Paul ...

Scientists recently announced a terrifying find: A megaquake on the fearsome Cascadia fault in the Pacific Northwest could trigger a huge tremor on the San Andreas fault - essentially back-to-back ...

The Cascadia Subduction Zone has been quiet for more than three centuries, but that silence is exactly what alarms the scientists who study it. Along roughly 600 miles of fault off the Pacific ...

Picture a fault line lurking just offshore, stretching the length of entire states and quietly storing energy. Scientists say the Cascadia Subduction Zone has been still for centuries, which makes the ...

They are two of the West Coast’s most destructive generators of huge earthquakes: The San Andreas fault in California and the Cascadia subduction zone offshore of California’s North Coast, Oregon, ...

For generations, scientists believed that the West Coast’s two great earthquake engines — the Cascadia subduction zone and the San Andreas fault — operated on separate geologic stages. One dives, one ...

CORVALLIS, Ore. (KTVZ) – Two fault systems on North America’s West Coast – the Cascadia subduction zone and the San Andreas fault – may be synchronized, with earthquakes on one fault potentially ...

It’s like a plot from a Hollywood movie. A massive earthquake on one West Coast fault triggers other earthquakes far away, causing vast destruction over hundreds of miles. A new study released Tuesday ...

CORVALLIS, Ore. (KTVZ) — Oregon scientists are leading the world in tsunami research, helping communities better understand and prepare for one of the most destructive natural forces on Earth. “It has ...

PORTLAND, Ore. - A new study shows a Cascadia Subduction Zone earthquake could injure 27,000 people, displace 85,000, kill 1,400 and cause $37 billion in damage to buildings in the Portland metro area ...

Workers check damage to Interstate 880 in Oakland after it collapsed during the Loma Prieta earthquake in October 1989. (Paul Sakuma / Associated Press) They are two of the West Coast's most ...