Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely, human triggered possible.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely, human triggered possible.
Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches unlikely, human triggered possible.
Regions
Glacier.
A warming trend will increase potential slab formation over the Dec 15 persistent weak layer. Watch for changing conditions and take time to evaluate the snowpack.
Weather Forecast
Cloudy with sunny periods an alpine high of -1C and light winds are the forecast for today. A SW flow, warming temps and moderate precipitation in the form of snow is expected Friday through Sunday. Look for an increasing avalanche danger trend.
Snowpack Summary
The Dec 15th PWL (most prominent at TL) is the main layer of concern. Small slides have been occurring sporadically on this layer. Slab development has been slow with the past cold, but warming temps and solar input will contribute to slab development over the Dec 15th layer. Steep solar aspects will have a sun crust after yesterday's warmth.
Avalanche Summary
No new avalanche activity observed or reported in the last 24 hours. On Tuesday our team had a skier remote size 1 on a S aspect in the west end of the park. This slide released on the Dec 15th layer. Frequent Flyer came out size 2 sometime on Tuesday down across the summer trail.
Confidence
Due to the number of field observations
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.
