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By Ear to the Ground
It wasn’t DNR’s mapping that caused it of course, but, just by coincidence, a geology team from the department had recently completed seismic mapping in the area of last Tuesday’s minor earthquake east of Seattle.
On Tuesday morning, May 25, at 5:21 a.m., a moderate 3.4 magnitude earthquake rattled residents near Carnation in eastern King County. We have heard no reports of damage or injuries, though there were stories of family pets acting oddly shortly before the quake occurred (but if you own cats, how can you tell?). A lot of people slept through the quake. The epicenter was about 3 miles east of Union Hill Rd. and Novelty Hill Rd., at a depth of 3.9 miles below the ground on a segment of the Rattlesnake Mountain fault.
It just happens that at least one homeowners’ association we know of in the area has an aggressive program of earthquake preparedness. The Trilogy at Redmond Ridge homeowners’ association takes part in the Map Your Neighborhood program from the Washington State Emergency Management Division. They have trained and educated 68 percent of residents in the community’s 1,600 homes. Tonight, Timothy Walsh, DNR chief hazards geologist, is speaking to Trilogy residents at a previously scheduled emergency preparedness meeting. Tim is one of the experts featured on a four-part series on earthquakes in the Northwest, “On Shaky Ground,” scheduled to air June 8 through 11th on KUOW-FM.
More about earthquakes is on the web page of the DNR Division of Geology and Earth Resources, which maps and assesses earthquake faults so homeowners, businesses and goverments know where the risks are.
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