Department of Earth and Environmental Sciences
On November 30, 2017, a magnitude 4.1 earthquake that occurred in Dover, Delaware was recorded by Weston Observatory. Below is the Weston Observatory seismogram of this earthquake, recorded at Westport, CT, our closest station to this quake. The Delaware earthquake is the big red spike at 16:48 (4:48 local time).
For more information about this earthquake see:
Additional information about this earthquake can also be found on the U.S. Geological Survey earthquake monitoring website.