The New Jersey earthquake occurred on Friday morning was the most recent of many felt in Pennsylvania over the years.
While it was one of the most powerful quakes recorded in the region, many others go unnoticed. The earliest records of earthquakes in Pennsylvania go back to colonial times.
The Reading-Lancaster seismic zone within Pennsylvania is responsible for many of these tremors.
The map below displays the location of previous earthquakes reported in Pennsylvania and nearby states. Click on a marker for more details, including the magnitude, of each quake.
Source: U.S. Geological Survey
How common are earthquakes in eastern PA and why was the New Jersey earthquake felt so far away?
