Natural avalanches possible, human triggered probable.
Alpine
Natural and human triggered avalanches likely.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches possible, human triggered probable.
Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches possible, human triggered probable.
Regions
Glacier.
http://www.pc.gc.ca/apps/scond/Cond_E.asp?oID=30469&oPark=100205Avalanche activity will increase throughout the day as the warm alpine temperatures and sun begin to affect the snowpack.
Weather Forecast
Valley cloud will linger all day, once above it you will be treated to sunny skies and warm temps as there is a temperature inversion, alpine high of +3 and 20 km/hr south east winds at ridge top. Alpine temps remained near or above zero over night. Snow forecasted for Tuesday evening (6mm) and more Wednesday night into Thursday (22mm)
Snowpack Summary
70cm of storm snow has settled into a slab over several weak layers, Jan 4th and Dec 15 surface hoar layers which are down ~60cm and ~90cm respectively. The snow load has made these layers reactive with sudden planar results showing high propagation potential, especially on steep solar aspects where the snow has been heated by the sun.
Avalanche Summary
A natural avalanche cycle occurred yesterday afternoon with numerous sz 2.0 - 2.5 avalanches and several sz 3.0 - 3.5 avalanche from steep, solar facing terrain. The cycle occurred midday when solar radiation was at its highest.
Confidence
Problems
Loose Wet
Loose Wet avalanches are the release of wet unconsolidated snow or slush. These avalanches typically occur within layers of wet snow near the surface of the snowpack, but they may quickly gouge into lower snowpack layers. Like Loose Dry Avalanches, they start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-wet avalanches include point-release avalanches or sluffs. Loose Wet avalanches can trigger slab avalanches that break into deeper snow layers.
Persistent Slabs
Persistent Slab avalanches are the release of a cohesive layer of snow (a slab) in the middle to upper snowpack, when the bond to an underlying persistent weak layer breaks. Persistent layers include: surface hoar, depth hoar, near-surface facets, or faceted snow. Persistent weak layers can continue to produce avalanches for days, weeks or even months, making them especially dangerous and tricky. As additional snow and wind events build a thicker slab on top of the persistent weak layer, this avalanche problem may develop into a Deep Persistent Slab.
