Quick report
- Cracking
- specific
I found sensitive wind slabs today on wind loaded upper elevation slopes. There was 2-3" of new snow that had been heavily wind loaded into slabs 4-12" thick. The wind slabs were small, easy to identify, and confined to near ridgetops, but they were also certainly large and stout enough to knock you off your feet and take you for a ride. They were also growing and will continue to grow tonight and tomorrow. I did not observe any significant signs of slab instability outside of wind loaded slopes.
Cornices have grown and are sensitive, large, and overhanging again.
At lower elevations, there was enough sun and warmth today for a small natural rollerball cycle to occur in the new snow.
I intentionally triggered multiple small wind slabs on wind loaded, upper elevation slopes. I also observed sensitive shooting cracks in similar locations.Weather
- Cloud Cover
- overcast
- Wind Loading
- moderate
- Recent Snowfall
- 8
- Snow Avail For Transport
- small smounts
It was overcast today with light to moderate snowfall. Graupel was falling during the heavier periods of snowfall. There were moderate west winds with some strong gusts along the upper elevation ridgeline.
Snowpack
I dug a snowpit on a southeast aspect at 7500 ft. The total depth was 110 cm or 43". There was 3" of new snow from the last ~36 hours resting on a thin crust. There was 14" of total recent snow from the last week resting on a thick crust. Below that, there were layers of rounding facets and another crust. I did two extended column tests. One of them started wobbling on moist rounding facets near the ground while being cut out. The other propagated on rounding facets 85 cm deep on the 25th tap (ECTP25). There is still some weak snow in the snowpack, but it is quite unlikely that you would be able to impact these layers with the thick crusts above.
Avalanche
- Size
- D1.5 R1
- Type
- HS
- Count
- 2
- Aspect
- E
- Trigger
- AS
- Elevation
- 7600 ft
I intentionally triggered multiple small wind slab avalanches on wind loaded, upper elevation slopes. They were generally 4" to 12" thick and up to 30 feet wide.

