The Weston Observatory at Boston College reports the quakes were recorded Monday near Danielson and in Plainfield. They included four quakes within 20 minutes beginning just after 6:30 a.m. including the 3.1-magnitude tremor, and a 1.3-magnitude quake just after noon.
The U.S. Geological Survey says the 3.1-magnitude tremor was felt in Rhode Island and in Massachusetts in New Bedford and Framingham.
There were reports of shaking, but no major damage or injuries.
Scientists say such a series of small quakes isn’t unusual in New England.