Thunderstorm Wind in Teton County, Wyoming

A supercell thunderstorm moved over the Bridger Teton National Forest to the east of Jackson, WY. Strong outflow winds from the supercell downed hundreds of trees over an approximately 6 mile path. There was extensive damage to the Crystal Creek Campground, where people were trapped until the road could be cleared 24 hours later. The Grizzly Lake Trail and Gros Ventre River Road were affected by tree damage. Maximum wind gusts were estimated to be in the 80 to 120 mph range based on tree damage. This damage is in addition to the tornado that occurred at higher elevations to the southwest of this lower-elevation campground damage and road damage.

In a warm and unstable air to the south of a stationary front, several supercell thunderstorms developed. The storms brought large hail, in addition to strong winds that toppled many trees across western Wyoming.