Our Northwest

New seismic model shows widespread faults

Friday, May 24, 2013by  Jon Osterberg

For years, Western Washingtonians have braced for “the big one” – a Cascadia subduction zone earthquake approaching magnitude 9.0.
   This week, geologists revealed a list of potential earthquake hot spots that include smaller faults across Washington. Their report may rattle some who figured only Puget Sound-area homeowners need worry about big tremors.
   Shallow faults don’t garner the same attention as forces that spawn megaquakes, but they’re prevalent, particularly in Eastern Washington. Inland faults stretch near population centers like Chelan and Wenatchee, Cle Elum and Ellensburg, Grandview, and Walla Walla.
   Geologists calculate that major quakes jolt Washington along shallow faults every 500 to 1,000 years. Read The Seattle Times article.

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