Avalanche Forecast
Issued: Apr 2nd, 2013 10:04AM
The alpine rating is Cornices, Loose Wet and Persistent Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeSummary
Confidence
Fair - Timing or intensity of solar radiation is uncertain for the entire period
Weather Forecast
Wednesday: Overcast skies / Light northwest winds / Freezing level at 1700mThursday: A high pressure system builds promoting clear and dry conditions with light westerly winds and 1800m freezing levels.Friday: An upper trough of low pressure will move over the Interior on Friday bringing light to locally moderate precipitation. Freezing levels will be in the valley bottom in the morning and rise to 1700m in the afternoon.
Avalanche Summary
Numerous natural loose wet and wet slab avalanches up to size 2.5 have recently been reported from solar aspects at a treeline and above.
Snowpack Summary
Surface faceting and surface hoar growth (up to 20 mm) has been prevalent on high, shady aspects, while the surface snow on sun-exposed slopes and at lower elevations (below 2000m) has been subject to daily melt-freeze cycles.Cornices are large and weak. Pockets of wind slab can be found on lee slopes and are possible to trigger under your skis or sled.A layer of buried surface hoar sitting on a crust down around 70-120cm, and has been producing variable results in snowpack tests. This persistent weakness remains a concern because of the potential for very large avalanches particularly with heavy triggers such as cornice falls. Old deep persistent weaknesses, including basal depth hoar, are a concern in shallow snowpack areas.
Problems
Cornices
Aspects: North, North East, East, South East.
Elevations: Alpine.
Likelihood
Expected Size
Loose Wet
Aspects: North, North East, East, South East, South.
Elevations: All elevations.
Likelihood
Expected Size
Persistent Slabs
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Apr 3rd, 2013 2:00PM