Avalanche Forecast
Issued: Dec 25th, 2018 4:27PM
The alpine rating is Deep Persistent Slabs and Persistent Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeThe snowpack is stabilizing after last week's storm, however isolated natural avalanche are still being reported. Despite improving trend, forecasters confidence is low. Caution is still warranted.
Summary
Weather Forecast
Boxing Day should be a mix of sun and cloud with occasional light flurries, but little in way of accumulation. Freezing levels will be at surface and winds will be light to moderate from the SW
Snowpack Summary
The snowpack has doubled since Dec 10, and is slowly stabilizing after last week's storm cycle. Deeper snowpack areas continue to show the Dec 10 SH layer down 60-80 cm with hard, but sudden column test results. In shallow snowpack areas, the basal facets are producing easy collapse test results and should not be trusted.
Avalanche Summary
There were several reports over the past 48 hours of natural avalanches (up to 1.5) from the Sunshine Back-country.
Confidence
Problems
Deep Persistent Slabs
This problem dominates the central and eastern part of the forecast region and will continue to do so for some time. Continue to avoid large, open avalanche prone slopes at treeline and in the alpine as these cannot yet be trusted.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Persistent Slabs
The Dec 10 surface hoar and facets can be found 40-80 cm down in the deeper (western) parts of the forecast region. The layer is stabilizing, but continues to be a concern .
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Dec 26th, 2018 4:00PM