High Wind in Roan and Tavaputs Plateaus, Colorado

At 10:41 PM MST on February 16th, the Colorado Department of Transportation sensor 139s034 Douglas Pass recorded a gust to 86 mph. Additional gusts recorded at this sensor during the event include a second gust to 86 mph at 1:55 AM MST 2/17, and a gust to 74 at 5:29 AM MST on the 17th. Additional sensors in the zone, all RAWS, recorded gusts from 45 mph to 67 mph during the period of high winds. No reports of damages, injuries, or fatalities were received in association with these high winds.

In the days leading up to this event, a strong trough made landfall along the West Coast of the US. Ahead of this system, unusually warm and dry conditions prevailed as high pressure dominated the Intermountain West. The trough began to track inland on the 15th into the 16th, but the high pressure was reluctant to shift east. This led to a tightening up of the pressure gradient between these two features, enhancing an already strong southwesterly upper level jet. Lift began to increase ahead of the trough on the evening of the 16th, with mountain rain and snow showers breaking out over the higher terrain of eastern Utah and western Colorado. This also helped to keep deep mixing ongoing well after sunset, resulting in some of the peak winds occurring between midnight and daybreak on the 17th. In addition, a potent cold front was associated with this system, and was expected to sweep through eastern Utah and western Colorado around daybreak. Ahead of the cold front, the surface pressure gradient tightened substantially and surface winds maxed out. This coincided with the period between midnight and daybreak on the 17th.