Avalanche Forecast
Issued: Dec 30th, 2017 3:00PM
The alpine rating is Loose Dry and Wind Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeSummary
Confidence
Moderate -
Weather Forecast
Sunday will be sunny with cloudy periods and no new snow. Temperatures are finally beginning to moderate, and after another cold night the daytime high should be a comparably pleasant -13 °C at higher elevations. Ridge top winds will be out of the west at 15 km/h. As the week progresses temperatures will continue to moderate with highs near 0°C by Wednesday or Thursday.
Avalanche Summary
Loose dry avalanches continue to occur in steep terrain at all elevations and on all aspects. These slides are generally size 1.5 or smaller, but are running a far distance in some terrain features.
Snowpack Summary
Another 10 to 15cm of new snow overnight brings the storm snow total to 40 to 50cm. This snow is mostly still low density in nature except in the high Alpine and in wind prone areas. Expect to find slabs on all aspects in the Alpine that have either been recently formed, or formed earlier in the storm and are now buried. At Treeline and below the Dec 15th surface hoar layer is buried between 40 and 60cm deep and is failing in loose dry avalanches, but not yet as a slab due the lack of an overlying cohesive layer. With increased winds this could change. Recent snowpits are showing that the November crusts are faceting, but these layers have not been active as an avalanche problem.
Problems
Loose Dry
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Wind Slabs
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Dec 31st, 2017 2:00PM