May 17, 2009
Earthquake felt in central Wyoming
A magnitude 3.9, intensity III earthquake occurred 15 miles west-northwest
of Jeffrey City, Wyoming and 37 miles south-south-east of Riverton, Wyoming at
00:47 MST on May 17th, 2009. The event occurred at a depth of 3.1 miles below
the surface. The U.S. Geological Survey National Earthquake Information Center
in Golden, Colorado reported this earthquake to the Wyoming State Geological
Survey. The quake was felt as intensity II in Lander and Rock Springs, Wyoming
and as intensity III in Thermopolis, Riverton and Fort Washakie, Wyoming. There
has been no reported damage associated with this event.
The WSGS has generated seismological characterizations of all Wyoming counties (see Earthquake Database), which include analyses of historic seismicity as well as projections of possible future earthquakes. For more information, please contact Seth Wittke by phone at (307) 766-2286, ext. 244, or by email at firstname.lastname@example.org.
from the Office of the Wyoming State Geologist
Ron Surdam, State Geologist