Recent Earthquakes in the Northeastern U.S.
== PRELIMINARY EARTHQUAKE REPORT ==Lamont-Doherty Cooperative Seismographic Network (LCSN)
Version #1: This report supersedes any earlier reports of this event.
This event has been reviewed by a seismologist.
A micro earthquake occurred at 7:18:42 AM (EDT) on Sunday, October 25, 2009
.
The magnitude 1.8 event occurred 20 km (12 miles) SW of Harrisburg,PA.
The hypocentral depth is 0.5 km (0.3 miles).
| Magnitude | 1.8 - duration magnitude (Md) |
|---|---|
| Time | Sunday, October 25, 2009 at 7:18:42 AM (EDT)
Sunday, October 25, 2009 at 11:18:42 (UTC) |
| Distance from | Harrisburg,PA - 20 km (12 miles) SW (216 degrees) Middletown,PA - 23 km (14 miles) SW (233 degrees) Harrisburg,PA - 49 km (31 miles) SE (132 degrees) |
| Coordinates | 40 deg. 4.5 min. N (40.075N), 76 deg. 59.2 min. W ( 76.987W) |
| Depth | 0.5 km (0.3 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst= 5, Nph= 11, Dmin=54.8 km, Rmss=0.14 sec, Erho=1 km, Erzz=0 km, Gp=136.8 degrees |
| Event ID# | ld1025198 |
| Additional Information | map |