Two small earthquakes were reported on Sunday night near Nashawena in the Elizabeth islands chain, east of Cuttyhunk. One of the quakes was felt in Fall River.
The first earthquake, a magnitude of 2.1, took place at 8:39 p.m. The second occurred seven minutes later and was recorded at a magnitude of 1.3.
The Weston Observatory recorded both earthquakes and rated their magnitude, epicenter and depth. The first was centered at latitude 41.45, longitude 70.88, just north of Nashawena. The depth of the quake was recorded at 3.90 kilometers, or 2.4 miles below the surface. The second earthquake was beneath Nashawena at latitude 41.44, longitude 70.87. This quake was closer to the surface at a depth of 1.7 kilometers (about a mile).
The Weston Observatory is a geophysical research laboratory of the department of earth and environmental sciences at Boston College. The observatory is located in Weston and monitors seismic activity in the region. The Web site address is bc.edu/research/westonobservatory/