While hiking in the Avenues Foothills, I experienced increasingly strong, cold easterly flow as I hiked eastward and upward to the top of the Avenues Twin. It was absolutely frigid on top, with screaming easterlies of perhaps 25–30 mph. I wasn't dressed for that!
Observations from the University of Utah show the development of the easterlies this morning with gusts reaching about 40 mph around 11 am.
As I looked westward toward the airport, I also saw evidence of a pronounced hydraulic jump where the flow separates from the surface and rises rapidly. An example of such a jump is provided by the figure below, which is based on an idealized numerical simulation.
|Source: Doyle and Durran (2007)|
Cumulus clouds just near downtown provided evidence of the strong ascent associated with the hydraulic jump this morning.
This cumulus cloud and scd clouds extended northward just west of the Wasatch foothills (photo below taken ~15 min earlier than the one above).