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The risk of a devastating mega-tsunami from the Cascadia Subduction Zone highlights the need for improved evacuation plans.
An earthquake with a preliminary magnitude of 5.7 struck 17 miles west of Petrolia in Northern California on Wednesday.
A magnitude 8.8 monster off the eastern coast of Russia threatened tens of millions of people with a tsunami risk. So why did ...
Multiple earthquakes, including a 4.0 magnitude temblor, shook Thursday morning near Sonoma County, according to the United States Geological Survey.
A preliminary-magnitude 5.7 earthquake struck off the coast of Northern California on Friday afternoon, but there was no threat of a tsunami, officials said.
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