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 1:18:23 AM (EDT) on Monday, May 11, 2009
.
The magnitude 1.3 event occurred 20 km (12 miles) SW of Harrisburg,PA.
The hypocentral depth is 1 km ( 1 mile).
| Magnitude | 1.3 - duration magnitude (Md) |
|---|---|
| Time | Monday, May 11, 2009 at 1:18:23 AM (EDT)
Monday, May 11, 2009 at 5:18:23 (UTC) |
| Distance from | Harrisburg,PA - 20 km (12 miles) SW (221 degrees) Middletown,PA - 23 km (14 miles) WSW (238 degrees) Harrisburg,PA - 47 km (29 miles) SE (131 degrees) |
| Coordinates | 40 deg. 5.3 min. N (40.088N), 77 deg. 0.1 min. W ( 77.001W) |
| Depth | 1 km (0.6 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst= 5, Nph= 10, Dmin=56.2 km, Rmss=0.25 sec, Erho=0.6 km, Erzz=0 km, Gp=140.4 degrees |
| Event ID# | ld1023832 |
| Additional Information | map |