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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 9:34:40 PM (EDT) on Friday, August 28, 2009 .
The magnitude 1.7 event occurred 77 km (48 miles) NNE (13 degrees) of Massena,NY.
The hypocentral depth is 18 km (11 miles).


Magnitude 1.7 - duration magnitude (Md)
Time Friday, August 28, 2009 at 9:34:40 PM (EDT)
Saturday, August 29, 2009 at 1:34:40 (UTC)
Distance from Massena,NY - 77 km (48 miles) NNE (13 degrees)
Ogdensburg,NY - 119 km (74 miles) NNE (30 degrees)
Plattsburgh,NY - 139 km (87 miles) NW (320 degrees)
Burlington,VT - 171 km (106 miles) NW (318 degrees)
Coordinates 45 deg. 36.3 min. N (45.605N), 74 deg. 37.4 min. W ( 74.624W)
Depth 18 km (11.2 miles)
Quality Fair
Location Quality Parameters Nst= 7, Nph= 15, Dmin=20.4 km, Rmss=0.09 sec, Erho=0.4 km, Erzz=0.7 km, Gp=216 degrees
Event ID# ld1024854
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