Thunderstorm Wind in Grand County, Utah

A strong to severe thunderstorm tracked from west to east along I-70 on the afternoon of the 27th, producing strong to severe wind gusts in addition to other hazards. Wind gusts ranged from 45 mph to 61 mph. The peak gust of 61 mph was recorded at the Utah Department of Transportation mesonet site I-70 at MP 226 Harley Dome. This was the only location to see a severe wind gust with this storm, although this same storm did go on to produce more severe wind gusts at locations just to the east, in Mesa County, CO. No reports of wind damage were received with this storm.

Deep subtropical moisture increased across eastern Utah and western Colorado and combined with forcing from a strong low pressure trough digging across the Intermountain West to result in widespread severe thunderstorms. These storms produced severe wind gusts, large hail and heavy rain that resulted in flash flooding and debris flows.