People across the region felt a 3.8 magnitude earthquake that was centered off the coast of Maine in York Harbor. So how rare is such an occurrence in New England?

YORK HARBOR, Maine — 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, Maine, just north of Portsmouth, New Hampshire, around 3:15 a.m.