Another earthquake was detected off the coast of New England early Wednesday morning, the U.S. Geological Survey reported. The 2.0-magnitude earthquake struck at about 3:15 a.m. and was centered less than 10 miles east of Portsmouth.

A minor earthquake has hit Yellowstone National Park, and some people in the region experienced a tremor. The magnitude 3.9 earthquake struck near Norris Geyser Basin, which has a history of quakes.

N​early 75% of the country is at risk for a potentially damaging earthquake, according to a recently updated USGS map.

Another earthquake of a relatively minor 2.0 magnitud e was recorded overnight in approximately the same spot as Monday’s 3.8-magnitude quake off the coast of Maine, according to the United State Geological Survey.

YORK, Maine (WGME) -- Another small earthquake was reported off the coast of Maine on Wednesday morning. The United States Geologic Survey (USGS) reported a 2.0 magnitude earthquake occurred about 6 miles southeast of York Harbor. This was the same area where a 3.8 magnitude earthquake shook parts of Maine on Monday.

An earthquake​ just off Maine today was felt in Boston and into Connecticut, Vermont and New Hampshire, according to a "shake map."

Experts said we see earthquakes like the one that hit Monday only once every several years or so, and when we see something this strong, we can feel it for miles.

Experts from UNH explain how rare the 3.8 magnitude earthquake was and the likelihood of significant aftershocks.

Experts say that while it has been quiet after Monday's quake, the risk of one or more aftershocks is not out of the question.

The USGS initially reported this as a magnitude 4.1 earthquake but was downgraded to a 3.8 after further reports.

An earthquake centered about 17 miles northeast of Stanley was felt across four states on Monday morning, the U.S. Geological Survey reported.