I may have spoken a little too quickly about the demise of the cold pool. It appears there still are a few cold-pool fragments persisting around the area. For example, check out the observations near Lehi, Point of the Mountain, Bluffdale, and Riverton where temperatures range from 39-47F.
Check out the temperature variability at the glider port near point of the mountain, which suggests it sits right near the top of the cold-air pool with the cold air intermittently spilling over the observing site.
Finally, haze and smog within the cold-pool fragment can be seen when looking south from the Avenues. In particular, check out the visibility obscuration in the saddle of the Traverse Mountains.
Further evidence of the value of MesoWest.