Avalanche Forecast
Issued: Jan 10th, 2017 4:07PM
The alpine rating is Wind Slabs and Persistent Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeSummary
Confidence
Moderate - Due to the number of field observations
Weather Forecast
Wednesday: Mainly clear skies / Moderate to strong northerly ridgetop winds / Alpine temperatures of -15Thursday: Clear skies / Light and variable winds / Alpine temperatures of -10Friday: Mainly clear skies / Moderate southwest winds / Alpine temperatures of -8
Avalanche Summary
No new avalanches were reported on Monday, although in the neighbouring North Columbia region, wind slab activity to size 1.5 was noted in exposed terrain. Ongoing northerly winds on Tuesday may promote a reverse loading pattern increasing the likelihood of wind slab activity on a variety of aspects.
Snowpack Summary
Up to 36 cm of low density snow fell on Sunday night and Monday. Moderate to strong southwest and then northerly winds have shifted these fresh accumulations into wind slabs at treeline and above. The new snow has also covered old, thicker wind and hard slabs from previous wind events. Persistent and deep persistent weakness in the mid and lower snowpack are giving variable results in snowpack tests, but are expected to be most touchy in shallow snowpack areas. Recent snowpack tests gave moderate but resistant results on facets and/or surface hoar buried mid-December where it was found down 45 cm, and hard but sudden collapse results on the facet/crust weakness buried in November down 116 cm near the base of the snowpack.
Problems
Wind Slabs
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Persistent Slabs
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Jan 11th, 2017 2:00PM