A small earthquake detected off the coast of Maine Wednesday was an aftershock from a larger quake that was felt in Boston earlier this week. Scientist John Ebel with the Weston Observatory explains why more are possible.

The southern coast of Maine has seen its second earthquake this week. The U.S. Geological Service said that the 2.0-magnitude earthquake occurred Wednesday morning, approximately five-and-a-half miles southeast of York Harbor,

A 2.0 magnitude earthquake was recorded off York Harbor, Maine, early Wednesday by the U.S. Geological Survey, an aftershock to Monday’s earthquake.

YORK, Maine — A small earthquake was reported off the coast of York Harbor Wednesday morning, two days after a larger one in a similar spot.

A magnitude 3.8 earthquake struck 10 miles off the coast of York, Maine on Monday. The earthquake was recorded at 10:22 a.m. on Monday and was about 10 kilometers southeast of York Harbor, according to USGS. It shook at a depth of 13.2 km. There is no tsunami danger from this earthquake.