Montana News

Dec 14, 2011 2:33 PM by Dennis Bragg (KPAX/KAJ Media Center)

Magnitude 3.5 earthquake rattles Western Montana

Another small earthquake has been reported in the Upper Clark Fork Valley east of Clinton.
The U.S. Geological Survey reports the quake, measured around magnitude 3.5, was centered 14 miles southeast of Clinton and hit at 9:56 a.m. It was initially measured at a depth of 7.6 miles.

Although it didn't appear the quake was felt over a broad area, we did receive a call from a Rock Creek resident who said he'd felt the event.

That's the same general area where quakes have hit over the past several months, including a sizeable quake in late summer and an even larger quake last month. Those aren't the only quakes in the area that have shown up in the past couple of days.
USGS also reported a small quake measuring magnitude 2.2 that happened 11 miles southwest of Drummond just before 9 p.m. Monday night. And two tremors of less than magnitude 2 occurred near Thompson Falls and northwest of Polson Tuesday afternoon.

All those readings are computer generated and must be reviewed by geologists for accuracy. But they show the frequency of the earth's movements under western Montana. Montana is considered one of the most seismically active states in the country.


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