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== PRELIMINARY EARTHQUAKE REPORT ==
University of Washington, Dept. of Earth and Space Sciences

Version #1: This report supersedes any earlier reports of this event.
This event has been reviewed by a seismologist.

A micro earthquake occurred at 6:10:38 PM (PST) on Wednesday, November 4, 2009.
The magnitude 1.2 event occurred 15 km (9 miles) N of Richland, WA.
The hypocentral depth is 0.4 km (0.2 miles).


Magnitude 1.2 - duration magnitude (Md)
Time Wednesday, November 4, 2009 at 6:10:38 PM (PST)
Thursday, November 5, 2009 at 2:10:38 (UTC)
Distance from Richland, WA - 15 km (9 miles) N (3 degrees)
West Richland, WA - 15 km (9 miles) NNE (25 degrees)
West Pasco, WA - 19 km (12 miles) NNW (339 degrees)
Spokane, WA - 199 km (123 miles) SW (226 degrees)
Coordinates 46 deg. 24.8 min. N (46.413N), 119 deg. 16.3 min. W (119.271W)
Depth 0.4 km (0.2 miles)
Location Quality Good
Location Quality Parameters Nst= 13, Nph= 13, Dmin=2 km, Rmss=0.13 sec, Erho=0 km, Erzz=0 km, Gp=118.8 degrees
Event ID# uw11050210
Additional Information 2-degree map ||
Topo map centered at earthquake (This link takes you offsite).


For more information, see http://www.ess.washington.edu/SEIS/PNSN/

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