Check out our Holiday Auction - Sign Up for the Utah Snow and Avalanche Workshop (USAW)

Observation: Mineral Basin

Observation Date
11/24/2024
Observer Name
Kelly, Snowbird Snow Safety
Region
Salt Lake » Little Cottonwood Canyon » Snowbird periphery » Mineral Basin
Location Name or Route
Mineral Basin
Weather
Sky
Scattered
Wind Direction
Northwest
Wind Speed
Light
Weather Comments
Winds were blowing from the west-northwest in the light to moderate range. Nearby weather station at 11,000' had a temperature of 12°F. As the clouds were breaking up and the sun was coming out there was some minor green-housing but this didn't last long. We did note some natural new snow dry loose avalanches that were 4"-6" deep and isolated to steep rocky terrain when the sun warmed the rocks. These were small and wouldn't have been enough to bury a person.
Snow Characteristics
New Snow Depth
6"
New Snow Density
Medium
Snow Surface Conditions
Powder
Snow Characteristics Comments
6" new snow with .6" of water for this storm. The new snow was soft and there was still lots of summer surface underneath.
Photo of lifting clouds looking back towards American Fork.
Snow Profile
Aspect
Southeast
Elevation
10,800'
Slope Angle
32°
Comments
We went looking for un-skied, un-touched terrain at high elevation southeast aspects to see what the facets near the ground may look like. In this location they were not totally faceted and we did not get any propagation with an extended column test. There was more snow than I expected and most likely this area had been wind loaded from northwest winds over the last few weeks. There were a couple of crusts present that were breaking down. I will keep an eye out for southeast aspects with thinner snowpacks to see if there is more faceting in those locations.
We also dug a few quick hand pits on west and northwest aspects 10,300'-10,800' in elevation and in many of those locations it was a much thinner snowpack (less than 12") with 2 distinct crusts surrounded by facets and covered by the newest snow. There is a lot of spatial variability right now, which means that it is not consistent and we can't really say that there is one widespread problem that you may find everywhere and the best way to approach this is to check out each slope you would like to travel on or under as we start to get more snow this week. The new snow appeared to be bonded well to the old snow where we travelled.
Today's Observed Danger Rating
None
Tomorrows Estimated Danger Rating
None
Coordinates