June 21, 2018
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2.3 magnitude earthquake strikes Blue Hill region

By Abigail Curtis, BDN Staff

SEDGWICK, Maine — A 2.3 magnitude earthquake shook the Blue Hill peninsula late last night, according to the Weston Observatory at Boston College.

The minor quake struck at 11:41 p.m. and lasted 2.7 seconds. Its epicenter was under Caterpillar Mountain in Sedgwick, according to the college’s New England Seismic Network. The network is responsible for monitoring and locating earthquakes in the six New England states.

“That’s pretty small. It’s really on the cusp of being a felt earthquake,” said Justin Starr, research assistant at the observatory.

He has heard reports that weak shaking from the earthquake was felt by people in Sedgwick, Blue Hill, Brooksville, Castine, Stonington and even Searsport.

People who believe they experienced the earthquake are encouraged to let officials know by way of the website for the U.S. Geological Survey.

According to Starr, the location of this quake is interesting because it is in the middle of two notable geologic events. Just east, in Bar Harbor, a substantial earthquake rattled the region in the fall of 2006. Smaller quakes occurred through the spring of 2007. Just to the west, a large swarm of microquakes occurred in the Bucksport and Searsport areas last May.

Earthquakes in Maine are of the “intraplate” variety, because the state is located in the middle of the North American tectonic plate.

He said that it’s “very unlikely” that the earthquake is related to four minor earthquakes that have been detected in central Maine in recent days.
Those were smaller and centered on Millinocket.

The website to report the earthquake is earthquake.usgs.gov/earthquakes/dyfi.

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