Preliminary Earthquake Report

Magnitude 1.8 YELLOWSTONE NAT. PARK, IDAHO
2009 November 21 18:17:44 UTC

Magnitude 1.8
Date-Time 2009 11 21 18:17:44 UTC
Time of Earthquake in other Time Zones
Location 44.47N 111.07W
Depth 11.1 kilometers
Region YELLOWSTONE NAT. PARK, IDAHO
Distances 20 km (10 miles) W of Old Faithful, Wyoming
20 km (15 miles) S of West Yellowstone, Montana
90 km (55 miles) NE of Rexburg, Idaho
630 km (390 miles) NW of CHEYENNE, Wyoming
Location Quality Error estimate: horizontal +/- 0.7 km; depth fixed by location program
Location Quality
Parameters
Nst=12, Nph=12, Dmin=15 km, Rmss=0.09 sec, Gp=136.8 degrees
Source University of Utah Seismograph Stations
Event ID uu00004645

Earthquake Location

Earthquake Location