A 3.8 magnitude earthquake struck off the coast of New England on Monday morning with shaking felt in Portsmouth, New Hampshire, and an hour away in Boston. The quake was centered 10 kilometers southeast of York Harbor, Maine.

The largest known New England earthquakes were a 6.5-magnitude in 1638 centered in Vermont or New Hampshire, and a 5.8-magnitude centered offshore from Cape Ann in 1755, which resulted in severe damage to the Boston waterfront.