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?

The Boston area shook from a rare, but minor, earthquake Monday morning. The U.S. Geological Survey rated the shaking as a magnitude 3.9, downgraded from the initial magnitude of 4.1. It was centered off the coast of New Hampshire and Maine in York Harbor, about 12 miles underground.

SCARBOROUGH, Maine (AP) — A 3.8-magnitude earthquake centered near the Maine coast rattles northern New England. Two Pensacolians went out Thursday to shoot photos of an eerie, empty Escambia Bay Bridge. They got something equally strange instead.