Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches unlikely, human triggered possible.
Regions
Glacier.
Lots of skiers/boarders are hitting Rogers Pass these holidays. Watch for other groups, both above and below you, as skier-triggered avalanches could affect you.
Weather Forecast
10cm of snow today/tonight with light to moderate westerly winds and an alpine high of -10*C. Flurries on Wednesday, moderate SW winds, and freezing levels remaining in the valley bottom. Thursday should bring a juicier pulse of snow, with 15cm, moderate to strong SW winds, and freezing levels up to 800m.
Snowpack Summary
Storm snow from last week and incremental loading this week overlie a weak, facetted Dec 18th layer. This interface shows moderate to hard results in compression tests, but natural and skier triggered slabs on this layer have been observed the last couple of days. As this load settles into a stiffer slab, there may be more avalanche activity.
Avalanche Summary
A size 2 skier-triggered avalanche from steep, shallow, unsupported terrain yesterday resulted in a rescue from NRC Gully. A size 2 skier-triggered slab on the approach slope to Video Peak was reported from Sunday.
Confidence
Problems
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.
Loose Dry
Loose Dry avalanches are the release of dry unconsolidated snow and typically occur within layers of soft snow near the surface of the snowpack. These avalanches start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-dry avalanches include point-release avalanches or sluffs.