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Avalanche Forecast

Archived

Dec 15th, 2019–Dec 16th, 2019

Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.

Regions

Purcells.

Although the likelihood of triggering has reduced, weak layers near the base of the snowpack remain a concern in steep rocky terrain.

Confidence

Moderate - Uncertainty is due to extremely variable snowpack conditions reported through the region.

Weather Forecast

SUNDAY NIGHT: Cloudy with clear periods, light to moderate northwest wind, alpine high temperature -10 C.

MONDAY: Isolated flurries, moderate west wind, alpine high temperature -9 C.

TUESDAY: Isolated flurries, moderate southwest wind, alpine high temperature -6 C.

WEDNESDAY: Mainly cloudy, moderate southwest wind, alpine high temperature -8 C.

Avalanche Summary

On Saturday there were reports loose dry avalanches to size 1.5 primarily on north aspects in the alpine. 

Snowpack Summary

So far this season's snowpack has a high degree of variability. Anywhere from 10 to 35 cm of snow may sit on a weak layer of surface hoar in sheltered areas at treeline. A second layer of surface hoar primarily found in the in north of the region is found 40-60 cm below the surface in sheltered areas at treeline.

There are a variety of crusts buried in the mid to lower snowpack. These crusts have mostly broken down. The base of the snowpack generally consists of facets and depth hoar.