Position: – 41.49°N 77.34°W – Depth: 0 km
Distance from Exton PA: 2.0 Deg – 219 Km – Azimuth: 137.6 Deg
This unknown event (not cataloged by the USGS) was noticed on seismometers all around Pennsylvania. Most likely it was not an earthquake (explosion, mine collapse)?
Map of stations that detected this event.
SeisComP3 traces for AM.R8C73.00.SHZ (Exton PA), LD.WUPA.BHZ (West Chester PA), and LD.GEDE.BHZ (Greenville DE) showing the P wave arrivals.