[Geysers] Earthquake in western Montana (near Dillon)

[David Monteith]

According to Tara, an earthquake was felt in the old Faithful area at about 
2210 25 July, 2005.  She was at the top of the west wing of the Inn, which 
swayed for a half minute or so.  Bronco felt it at the government 
area.  Those at the Old Faithful Lodge cabins did not feel anything.  Tara 
and the Strassers went for a quick tour of the basin but reported nothing 
out of the ordinary.

The following is from the USGS.

Preliminary Earthquake Report U.S. Geological Survey, National Earthquake 
Information Center World Data Center for Seismology, Denver Recent 
Earthquake Activity in the USA

Magnitude 5.6 - WESTERN MONTANA
Monday, July 25, 2005 at 10:08:36 PM Local Time -- 2005 July 26 04:08:36 (UTC)

A moderate earthquake occurred at 04:08:36 (UTC) on Tuesday, July 26, 2005. 
The magnitude 5.6 event has been located in WESTERN MONTANA. (This event 
has been reviewed by a seismologist.)
	
Magnitude 	5.6
Date-Time 	Tuesday, July 26, 2005 at 04:08:36 (UTC) Coordinated Universal Time
                       Monday, July 25, 2005 at 10:08:36 PM local time at 
epicenter

Location 	45.398°N, 112.550°W
Depth 	5 km (3.1 miles) set by location program
Region 	WESTERN MONTANA
Distances 	21 km (13 miles) NNE (18°) from Dillon, MT
                      24 km (15 miles) SW (226°) from Twin Bridges, MT
                      28 km (18 miles) WSW (257°) from Sheridan, MT
                      63 km (39 miles) S (179°) from Butte-Silver Bow, MT
                      353 km (220 miles) NE (55°) from Boise, ID
                      519 km (323 miles) N (354°) from Salt Lake City, UT
Location Uncertainty 	horizontal +/- 6.5 km (4.0 miles); depth fixed by 
location program
Parameters 	Nst= 75, Nph= 75, Dmin=67.7 km, Rmss=1.04 sec, Gp= 43°,
M-type=moment magnitude (Mw), Version=6
Source 	USGS NEIC (WDCS-D)
Event ID 	usazad