Avalanche Forecast

Archived

Dec 2nd, 2019–Dec 3rd, 2019

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, 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.

Regions

Jasper.

Weather system set to drift through the region Tuesday and Wednesday; up to 25 cm new snow and moderate to strong winds.

Avoid areas where wind loading is observable and present during the storm.

Weather Forecast

A series of pacific lows tracking inland will bring strong westerly winds and significant snowfall on Tuesday and Wednesday. Details here: Mountain Weather Forecast.

Snowpack Summary

The shallow snowpack areas will be faceting and loosing support underfoot though much of the forecast region due to the sustained cold temps. Windslabs and wind effect in exposed areas. Oct. and Nov. crusts preserved in the mid and lower snowpack; both seem have a good bond to the overlaying snow.

Avalanche Summary

No new avalanches observed or reported.

Confidence

Intensity of incoming weather systems is uncertain on Tuesday

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind slabs that form over a persistent weak layer (surface hoar, depth hoar, or near-surface facets) may be termed Persistent Slabs or may develop into Persistent Slabs.