The United States Geological Survey detected a small earthquake in Longswamp Township Saturday night, near the Berks/ Lehigh County line.
The magnitude 1.7 quake was recorded on September 2, at a depth of 6.5 kilometers (4.039 miles), in the area of Swabia Creek, near State Street and Fairchild Street.
The recorded time was 7:25pm. The earthquake was picked up by multiple monitoring stations.
Read the full USGS earthquake report here: https://earthquake.usgs.gov/earthquakes/eventpage/us7000ksxf/executive
According to the USGS, Berks falls into the Lancaster seismic zone of southeastern Pennsylvania. Earthquakes in the central and eastern U.S., although less frequent than in the western U.S., are typically felt over a much broader region. East of the Rockies, an earthquake can be felt over an area as much as ten times larger than a similar magnitude earthquake on the west coast.
