There are TWO earthquakes being reported within two minutes of each other.
First, According to to the U.S. Geological Survey (USGS) National Earthquake Center there was a M2.4 earthquake at 5:46 p.m. about 1.5 miles SSW of New Bedford.
Source: http://earthquake.usgs.gov/earthquakes/eventpage/usc000mnk4#summary.
Second, the Massachusetts Emergency Management Agency reported a 4.1 magnitude earthquake at 17:48 hours off the coast of Nantucket.
Source: New England Incident Alerts