National Weather Service United States Department of Commerce

Overview

A large supercell thunderstorm developed near the Interstate 80 Summit during the early afternoon hours on 05/27/18. Initial reports of large hail were received at around 1415 MDT. This severe thunderstorm lifted northeast into western portions of Laramie county spawning its first tornado at around 1443 MDT north of Buford, WY. This tornado producing severe thunderstorm continuing lifting northeast recycling numerous times. Although much of the life-cycle of the tornado was spent over open country causing no damage, significant damage occurred in the vicinity of Federal, WY, 17 miles northwest of Cheyenne. The tornado continued over open country and crossed Interstate 25 near the Whitaker exit producing damage to a vehicle. With no damage indicator as it crossed Interstate 25, this portion of this cyclical tornado was rated EF-Unknown. Although the tornado likely continued periodically east of Interstate 25 before lifting, there were no additional reports of structures impacted or other damage.

 

Storm as it crossed Interstate 25 near the Whitaker Exit.

 

 

Supercell west of Cheyenne

tornado north Cheyenne Kimball ne

Supercell Thunderstorm West of Cheyenne

Credit: Jacob Deflitch

Tornado near Federal

Credit: Dan Fitts

Tornado near Federal

Credit: Jeremy Bower

 

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