Volcano Update from Archive

Tuesday, March 25, 2008 11:16 MDT (Tuesday, March 25, 2008 17:16 UTC)

44.43°N 110.67°W, Summit Elevation 9203 ft (2805 m)
Volcano Alert Level: NORMAL
Aviation Color Code: GREEN

University of Utah PRESS RELEASE

The University of Utah Seismograph Stations reports that a light earthquake of magnitude 4.10 occurred at 05:59 AM on March 25, 2008 (MDT) in Yellowstone National Park. The epicenter of the shock was located 29.8 km (18.6 mi) NE of Fishing Bridge, WY. Two earthquakes of magnitude 3.0 or greater have occurred within 25 km of the epicenter of this event since 1962. The largest of these events was a magnitude 3.53 on July 20, 1992, 6.4 km (4.0 mi) NE of Fishing Bridge, WY. No earthquakes of magnitude 4.5 or greater have occurred within 50 km of the epicenter of this event since 1962. This event has been reported felt in Pahaska Tepee, outside the east entrance to Yellowstone National Park and in southwest Montana as well as in western Wyoming.

The location of the earthquake has been analyzed by a seismologist.

Persons who felt the earthquake are encouraged to fill out a survey form on the USGS Community Felt reports web site: http://pasadena.wr.usgs.gov/shake/STORE/X13060_08/ciim_display.html.

Information on the earthquake can be viewed at the University of Utah Seismograph Stations: http://www.seis.utah.edu/.

Recordings from a nearby Yellowstone seismograph station can be viewed online at:

The Yellowstone Volcano Observatory (YVO) is a partnership of the U.S. Geological Survey (USGS), Yellowstone National Park, and University of Utah to strengthen the long-term monitoring of volcanic and earthquake unrest in the Yellowstone National Park region. Yellowstone is the site of the largest and most diverse collection of natural thermal features in the world and the first National Park. YVO is one of the five USGS Volcano Observatories that monitor volcanoes within the United States for science and public safety.