Avalanche

Mountain Loop - North

Irene HenningerWest Slopes Central
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Observation photo 1Observation photo 2Observation photo 3

Quick report

Two words for today: soggy and stubborn. 

Snow surfaces had already been wet for a while by the time I got to them, which meant no icing on skins, phew. Likewise, small amounts of avalanche activity- meaning rollerballs- had already run, and there was very few actually wet loose avalanches. I was able to kick off a few new rollerballs, but that was it. 

In typical fashion for this year, unexpected openings were present across the landscape, a hazard I needed to pay close attention to while moving faster than a walking pace. 

Many natural rollerballs from the last 24hours, only a couple small avalanches.

Weather

Air Temp
37
Cloud Cover
obscured
Wind Loading
previous
Snow Avail For Transport
none

Sogggy day with intermittent low level clouds blowing through. Scattered rain showers happened throughout the day. Moderate wind detected along the ridgeline; otherwise calm in sheltered areas.

Snowpack

Snow began at about 3000ft, and at 4500ft there was about 2ft of snow. By 5000ft, there was 6-7ft of snow. 

All snow surfaces were soggy, with the top 3-5cm (1-2")of snow saturated. Beneath this layer, snow was moist, but progressively less so, down to the underlying crust complex, about 2 feet beneath the surface. 

I dug several pits and did extended column tests, compression tests, and propagation saw tests, and I didn't get results on any layers. I identified a weakness above the crust complex 2ft deep, but the only failures it showed were shears after tests.  

Avalanche

Limited to rollerballs from past 24hours.