2.3 in Maine right near the larger one in October.
http://earthquake.usgs.gov/earthquakes/recenteqsus/Quakes/usc000e3se.php#details
Aftershock or a pre-quake?
Deeper than the first 4.0
http://www.ldeo.columbia.edu/LCSN/recenteqs/Maps/71-43.html
Given the history of the area....I would not say it’s a aftershock.
Interesting! We’ll have to wait and see but my bet would be on more to come...