[Update 8:55 p.m. ET] The U.S. Geological Survey revised its report of Tuesday's earthquake to magnitude 4.0, down from a preliminary magnitude of 4.6. The epicenter was pinpointed 4 miles west-southwest of Hollis Center, Maine, at a shallow depth of 4.2 miles.
Despite the downgrade, the quake was felt as far away as Boston, Massachusetts; Albany, New York, and even Waterbury, Connecticut, according to the USGS.
You can report your earthquake experience to the USGS at the above link, as well as adding your comment to the many at the end of this post.
"My entire house shook for 3 to 4 seconds. It felt like it was about to collapse," a viewer from Everett, Massachusetts, wrote to CNN affiliate WCVB in Boston.
[Original post] An earthquake of preliminary magnitude 4.6 hit Maine at 7:12 p.m. ET Tuesday, according to the USGS website. The earthquake happened 3 miles (5 kilometers) west of Hollis Center, Maine.