Alan Kafka
Weston Observatory
Department of Earth and Environmental Sciences
Boston College

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).

US Geological Survey map of region where this earthquake was felt.

From The Weather Channel: Where the magnitude 4.1 Delaware quake was felt.

Seismic waves from the Dover, Delaware earthquake moving across New England.

For more information about this earthquake see:

Magnitude 4.1 Earthquake Strikes Delaware (USA Today)

Additional information about this earthquake can also be found on the U.S. Geological Survey earthquake monitoring website.