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Avalanche Forecast

Archived

Dec 16th, 2015–Dec 17th, 2015

Alpine
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.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.

Regions

Glacier.

With better visibility today, have a good look around for recent avalanche activity near you.

Weather Forecast

Expect cool temp's (-10 to -15*C) in the alpine with light NW winds. The Arctic high that is sitting over the region should deliver some sun today. A storm system will begin rolling into the area Thursday night with light amounts of snow Friday.

Snowpack Summary

30cm of snow covers a supportive crust below 1600m. 60-80cm of settled snow covers the Dec 2 interface. Below tree line Dec 2 surface hoar has showed no recent activity. On steep solar aspects above treeline Dec 2 is a sun crust and remains reactive in tests in the mod - hard range. Expect pockets of wind affected snow at tree line and above.

Avalanche Summary

Sluffing and skier triggered size 1's from sidewalls of steep gully features have been reported.

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.