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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 5:01:44 PM (MDT) on Sunday, May 4, 2008.
The magnitude 0.5 event occurred 14 km (9 miles) NNE of West Yellowstone, MT.
The hypocentral depth is 7 km ( 4 miles).


Magnitude 0.5 - duration magnitude (Md)
Time Sunday, May 4, 2008 at 5:01:44 PM (MDT)
Sunday, May 4, 2008 at 23:01:44 (UTC)
Distance from West Yellowstone, MT - 14 km (9 miles) NNE (31 degrees)
Gardiner, MT - 38 km (24 miles) SW (219 degrees)
Island Park, ID - 40 km (25 miles) NE (40 degrees)
Big Sky, MT - 60 km (37 miles) SSE (158 degrees)
Salt Lake City, UT - 452 km (281 miles) N (9 degrees)
Coordinates 44 deg. 46.2 min. N (44.770N), 111 deg. 0.9 min. W (111.015W)
Depth 7.3 km (4.5 miles)
Location Quality Good
Location Quality Parameters Nst= 10, Nph= 10, Dmin=1.5 km, Rmss=0.09 sec, Erho=0.4 km, Erzz=0.8 km, Gp=151.2 degrees
Event ID# uu05042301
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For more information, see http://quake.utah.edu/

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