Haiti yesterday:
The earthquake that devastated Haiti Tuesday was the strongest temblor to hit the island nation in more than 200 years. The magnitude 7.0 quake caused tremendous damage that officials have yet to fully characterize, and the death toll may run into the thousands.... The Haiti earthquake occurred at a fault that runs right through Haiti and is situated along the boundary between the Caribbean and North American plates, which are rocky slabs that cover the planet and fit together like a giant jigsaw puzzle.
Seattle tomorrow?
The Cascadia Subduction Zone is a giant fault running off the coast of the Pacific Northwest. It is where the Juan de Fuca plate slides under the North American plate. When stress builds up between the plates an earthquake goes off sometimes accompanied by tsunamis. It's one of the biggest dangers towards Seattle. The last time it went off was in 1700.
The 30-mile-long fault runs through the heart of Seattle and Bellevue. In the past 3,000 years, it has violently rearranged the local landscape as many as four times—or every 750 years, on average. The last of those quakes came 1,100 years ago, and geologists estimate there's at least a 5 percent chance the fault will let loose again within the next 50 years.
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