Avalanche Forecast
Issued: Nov 21st, 2015 7:57AM
The alpine rating is Wind Slabs and Persistent Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeSummary
Confidence
Good - Due to the number and quality of field observations
Weather Forecast
High pressure will persist over the region through Sunday before an advancing cold front the North brings moderate snowfall Monday and Tuesday. Sunday: Mainly clear, freezing levels rising up to 1100m with a temperature inversion extending to 2000m, light precipitation starting late in the day. Monday: 5 to15 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
I'm working with limited observations but there haven't been any reports of avalanche activity. However, the avalanche cycle that occurred during and immediately after the storm earlier in the week produced some large deep avalanches.
Snowpack Summary
Up to 50cm of low density snow fell in the storm earlier this week. Over the last couple of days moderate westerly winds are likely to have moved this around and formed pockets of wind slab on east and northeast aspects. Below this were 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 65 to 120 cm. Depending on where you dig, you might also find one or more crusts. It would be wise to test these layers before committing to a slope. Facets can be found at the bottom of the snowpack at higher elevations in the alpine, especially on northerly aspects. Remember that its still a young snowpack. Rocks and stumps may be lurking unseen just below the surface. Ride with care!
Problems
Wind Slabs
Aspects: North, North East, East.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Persistent Slabs
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Nov 22nd, 2015 2:00PM