Don't be fooled by the relatively modest water equivalent rates in the upper elevations of the Cottonwoods today. The mountains are having a dramatic influence on this storm, but more in the lower elevations.
The word orographic means relating to mountains. When we are talking about orographic precipitation or orographic effects, we mean precipitation or effects related to the mountains.
The orographic effects today are dramatic and pronounced on the radar. Check out the radar loop below, which covers the period from 1938–2144 UTC (1238–1444 MST). In the northwesterly flow, there is clear enhancement of precipitation on the windward side of the Cedar, Stansbury, Oquirrh, and Wasatch Ranges as one moves from west to east across roughly the center of the image.
Note also that there's shadowing on the east (downstream) side of those ranges too.
If one looks carefully over the Stansbury, Oquirrh, and Wasatch ranges, however, the highest returns are not found over the crest but over and upstream of the windward slopes. Totals in the lower Cottonwood Canyons, for example, will be larger for this part of the storm than in the upper Cottonwood Canyons. What a pity!