Observation Date
2/18/2021
Observer Name
Mark Staples
Region
Uintas » Mirror Lake Highway
Location Name or Route
Mirror Lake Highway/Bald Mtn Pass
Comments
I went looking for recent avalanches. Found two (one on Bald Mtn and one about 6 miles away). Otherwise the snowpack is still rotten near the ground and it's still easy to sink to the ground when you step off your sled.
Also, I wanted to look at the snowpack at low elevations (below treeline) as well as aspects other than north (we know that north facing slopes are dangerous and unstable)
The most important observation was shooting cracks (100+) that I triggered on a SE facing slope at 10,676 feet just north of Bald Mtn Pass. This slope was 29 degrees in steepness and wouldn't slide. Anything just a little steeper would have produced an avalnache. Photos below of the cracks and a snow profile from that location. Note - I dug near this location on January 9th and recorded this snow profile.



Video
My snowpits on low elevation east facing and west facing slopes both had snow depths about 3.8 feet. Both had about a foot of weak facets near the ground. ECT's consistently propagated after a few taps from the shoulder (low 20s).
First and second photos are from an East facing pit at 9140 feet near the upper Provo River. Total snow depth was 117 cm. The weak layer was 42 cm above the ground. ECTP23
Third and fourth photos and snow profile are from a West facinng pit at 9610 feet just above the Provo River falls along the Mirror Lake highway. Total snow depth was 120 cm. The weak layer was 40 cm above the ground. ECTP23





Northwest winds have been transporting snow on the high peaks. Notice the drifts on Bald Mountain in the first photo below. Winds were blowing right to left in the photo. Notice how the trees in the foreground still has snow in it and was not touched by winds.
Notice in the second photo how snow has just been blown off the tree tops. It looks like winds only blew on the big faces. The slightest drop in elevation into the trees and there is no evidence of winds drifting snow.


Today's Observed Danger Rating
High
Tomorrows Estimated Danger Rating
Considerable
Coordinates