Avalanche Forecast

Archived

Nov 11th, 2020–Nov 12th, 2020

Alpine

Natural avalanches unlikely, human triggered possible.

Treeline

Natural avalanches unlikely.

Below Treeline

Below Threshold.

Alpine

Natural avalanches unlikely, human triggered possible.

Treeline

Natural avalanches unlikely.

Below Treeline

Below Threshold.

Alpine

Natural avalanches unlikely, human triggered possible.

Treeline

Natural avalanches unlikely.

Below Treeline

Below Threshold.

Regions

Jasper.

Early season hazards are very present at the moment. Watch out for wind slabs in unexpected places due to variable winds.

Weather Forecast

Thursday:

Mainly cloudy with isolated flurries.

Precipitation: Trace.

Alpine temperature: High -10 °C.

Ridge wind southwest: 20-40 km/h.

Freezing level at valley bottom.

Snowpack Summary

Treeline has a snowpack of 40-50cm with overall supportive travel. 5cm of recent snow has settled quickly. The Nov. 4th rain crust exists up to 2600m depending on location in the forecast area. Variable winds in the past 72 hrs have formed wind slabs on all aspects at ridge top.

Avalanche Summary

No new avalanches have been reported.

Confidence

Due to the number of field observations

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.