In the afternoon hours of June 5, 2009, a well-documented tornado moved across Goshen County, located in the state of Wyoming.

[1][3] Doppler weather radar positioned near the now-developed tornado recorded a rapid intensification over a period of three minutes, from 4:04 to 4:08.

[4] In the hours leading up to the tornado, multiple researchers working with the VORTEX2 team set up numerous instruments along U.S. Highway 85, including a doppler weather radar.

[5] By the time all of the instruments were set up, the hook echo of the supercell was located 21 miles (34 km) to the southwest.

[5] A Doppler on Wheels observed the entire lifecycle of an EF2 tornado in Goshen County, Wyoming.