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.

A second earthquake in just three days was detected off the coast of New England early Wednesday morning. The United States Geological Survey confirmed a 2.0 magnitude earthquake centered southeast of York Harbor,

Another, smaller earthquake was reported off the coast of Maine overnight. The 2.0-magnitude earthquake occurred around 3:15 a.m. Wednesday off the coast of York, Maine, about the same location as Monday’s 3.