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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 7:19:36 PM (MDT) on Sunday, May 4, 2008.
The magnitude 1.8 event occurred 12 km (8 miles) N of West Yellowstone, MT.
The hypocentral depth is 5 km ( 3 miles).


Magnitude 1.8 - local magnitude (Ml)
Time Sunday, May 4, 2008 at 7:19:36 PM (MDT)
Monday, May 5, 2008 at 1:19:36 (UTC)
Distance from West Yellowstone, MT - 12 km (8 miles) N (359 degrees)
Island Park, ID - 35 km (22 miles) NNE (31 degrees)
Gardiner, MT - 43 km (27 miles) SW (227 degrees)
Big Sky, MT - 57 km (36 miles) SSE (165 degrees)
Salt Lake City, UT - 451 km (280 miles) N (8 degrees)
Coordinates 44 deg. 46.4 min. N (44.773N), 111 deg. 6.6 min. W (111.109W)
Depth 5.3 km (3.3 miles)
Location Quality Excellent
Location Quality Parameters Nst= 26, Nph= 26, Dmin=2.6 km, Rmss=0.12 sec, Erho=0.3 km, Erzz=0.6 km, Gp=50.4 degrees
Event ID# uu05050119
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For more information, see http://quake.utah.edu/

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