Seismicity has calmed in the northeast after weak earthquakes rattled south-central Connecticut and southeastern New Hampshire over the last week; according to USGS, there have been no other earthquakes having a magnitude of 1.5 or greater since those struck in the northeast in recent days.
The first earthquake hit near Killingworth, Connecticut last Friday April 11 at 10:12 am. That weak magnitude 1.6 event struck from a depth of 4.1 km due south of Hartford and west of the Lower Connecticut River Valley.
The second earthquake hit near Alton, New Hampshire last Monday, April 14, at 4:44 pm in the afternoon. That weak magnitude 2.0 event struck from a depth of 5 km about a third of the way between Concord, New Hampshire and Portland, Maine.
According to USGS, earthquakes with a magnitude of 2.0 or less are rarely felt or heard by people, but once they exceed 2.0 , more and more people can feel them. While damage is possible with magnitude 3.0 events or greater, significant damage and casualties usually don’t occur until the magnitude of a seismic event rises to a 5.5 or greater rated event…