Avalanche Forecast
Issued: Nov 21st, 2015 7:54AM
The alpine rating is Wind Slabs and Persistent Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeSummary
Confidence
Fair - Due to the number and quality of field observations
Weather Forecast
High pressure will persist over the region through Sunday before an advancing cold from the North brings light snowfall Monday and Tuesday. Sunday: Mainly clear, a temperature inversion may exist in the morning but freezing levels are forecast to fall back to the valley floor throughout the day. Monday: 2 to10 cm of snow, southwesterly wind, a high of -10C in the alpine. Tuesday: 5 to 10 cm of snow, northerly wind, a high of -15C in the alpine.
Avalanche Summary
Im working with limited observations but there havent been any recent reports of avalanche activity. However, the avalanche cycle that occurred during and immediately after the storm earlier in the week produced some large avalanches. Last weekend there was a report submitted to the Mountain Information Network of rider a triggered avalanche that released on basal facets at treeline in the Dogtooth range near Golden.
Snowpack Summary
Up to 50cm of low density snow fell in the storm earlier this week. A MIN report from the south of the region suggest that some of this fell as rain forming a crust up to 1900m near Kimberley. Moderate westerly winds are likely to have formed pockets of windslab on east and northeast aspects. Below this we're dealing with a complex snowpack. A couple of layers of surface hoar were formed earlier in the month. Where they exist, they are likely to be found buried down 50 to 100 cm. Depending on where you dig, you might also find a couple of crusts. It would be wise to test these layers before committing to a slope. Facets are likely to be found just above the ground at higher elevations in the alpine. Remember that it's still a thin snowpack. Rocks and stumps may be lurking unseen just below the surface. Ride with care!
Problems
Wind Slabs
Aspects: North, North East, East, South East, South.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Persistent Slabs
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Nov 22nd, 2015 2:00PM