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== PRELIMINARY EARTHQUAKE REPORT ==
University of Utah Seismograph Stations, Salt Lake City, Utah

Version #2: This report supersedes any earlier reports of this event.
This event has been reviewed by a seismologist.

A micro earthquake occurred at 3:07:52 AM (MDT) on Monday, May 5, 2008.
The magnitude 1.7 event occurred 12 km (7 miles) N of West Yellowstone, MT.
The hypocentral depth is 5 km ( 3 miles).


Magnitude 1.7 - duration magnitude (Md)
Time Monday, May 5, 2008 at 3:07:52 AM (MDT)
Monday, May 5, 2008 at 9:07:52 (UTC)
Distance from West Yellowstone, MT - 12 km (7 miles) N (360 degrees)
Island Park, ID - 35 km (22 miles) NNE (31 degrees)
Gardiner, MT - 43 km (27 miles) SW (226 degrees)
Big Sky, MT - 58 km (36 miles) SSE (165 degrees)
Salt Lake City, UT - 451 km (280 miles) N (8 degrees)
Coordinates 44 deg. 46.2 min. N (44.770N), 111 deg. 6.4 min. W (111.106W)
Depth 5 km (3.1 miles)
Location Quality Excellent
Location Quality Parameters Nst= 21, Nph= 21, Dmin=2.9 km, Rmss=0.12 sec, Erho=0.3 km, Erzz=0.8 km, Gp=72 degrees
Event ID# uu05050907
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