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Recent Earthquakes in the Northeastern U.S.

== PRELIMINARY EARTHQUAKE REPORT ==
U.S. Geological Survey, National Earthquake Information Center

Version #N: This report supersedes any earlier reports of this event.
This event has been reviewed by a seismologist.

A micro earthquake occurred at 10:56:32 PM (EST) on Tuesday, February 19, 2013 .
The magnitude 1.8 event occurred 25 km (15 miles) ENE (70 degrees) of Lawrence,MA.
The hypocentral depth is 5 km ( 3 miles).


Magnitude 1.8 - local magnitude (Ml)
Time Tuesday, February 19, 2013 at 10:56:32 PM (EST)
Wednesday, February 20, 2013 at 3:56:32 (UTC)
Distance from Lawrence,MA - 25 km (15 miles) ENE (70 degrees)
Beverly,MA - 25 km (16 miles) NNE (16 degrees)
Pease AFB,NH - 32 km (20 miles) S (183 degrees)
Boston,MA - 50 km (31 miles) NNE (18 degrees)
Coordinates 42 deg. 47.8 min. N (42.796N), 70 deg. 50.2 min. W ( 70.837W)
Depth 5 km (3.1 miles)
Quality Poor
Location Quality Parameters Nst= 8, Nph= 8, Dmin=57.8 km, Rmss=0.35 sec, Erho=11.7 km, Erzz=2 km, Gp=237.6 degrees
Event ID# usc000fbj3
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