Another earthquake swarm shakes east-central Idaho

BOISE -- More than 40 small earthquakes have been recorded in east-central Idaho this week in what experts say is another earthquake swarm in the region.

Officials in the Challis area on Friday reported no damage from the micro-quakes that started Tuesday and have mostly gone unnoticed or unreported in an area experienced with more vigorous shaking.

But the temblors ranging up to 2.9 magnitude have perked up scientists trying to understand the fault system in the area where a 5.0 magnitude quake struck in January.

Idaho's largest recorded earthquake rocked the same area in 1983 when a 6.9-magnitude quake occurred near 12,667-foot Borah Peak, Idaho's tallest peak.

University of Idaho research geologist William Phillips says scientists aren't sure if the current earthquake swarm could lead to something bigger.


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