20-06-13 Stanley Earthquakes

Counting two on June 13, the US Geological Survey has recorded more than 250 earthquakes in the area in the past three weeks, denoted by the dots on the map above.

Tremors continue to shake the Sawtooth Valley as aftershocks from the March 31 earthquake continue to rumble around Stanley.

As of Monday morning, 32 aftershocks have shook the region in the past week, according to the U.S. Geological Survey, including a 4.2 magnitude earthquake a few miles north of Stanley Lake on Sunday afternoon.

Those tremors didn't move much, according to reports to USGS. But, they add to the mounting total of seismic activity recorded since a 6.5-magnitude earthquake, Idaho's second largest on record, hit about 20 miles northwest of Stanley more than two months ago.

Over the past 30 days, USGS has identified 273 earthquakes magnitude 2.0 or higher in the region.

“This is still a very active series,” said geophysicist Don Blakeman at the USGS National Earthquake Information Center in Golden, Colo., after a small quake on May 21.

Email the writer: mdee@mtexpress.com

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