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Avalanche Forecast

Archived

Dec 5th, 2022–Dec 6th, 2022

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

Regions

Chic-Choc Mountains.

A few centimetres of new snow now covers the crust, but it is not enough to cover the early season obstacles.

Confidence

High

Avalanche Summary

No new avalanche activity has been observed or reported. Please share your observations at [email protected], or with the Mountain Information Network.

Snowpack Summary

At the Madeleine Mines today, we found between 3 and 7 cm of new very light snow that rested directly on the crust formed by the rain and ice from Saturday night to Sunday. In areas of heavy accumulation, between 10 and 15 cm of snow can be found between this crust and that of December 1, 2022. The snow crystals under the December 1 crust are slowly beginning to form flat faces. At this early stage of the season, snowpack heights range from 20 to 45 cm in general and up to 70 to 80 cm in areas of maximum accumulation. Conditions remain marginal with barely enough snow to cover obstacles and a crust (or two...) that makes travel difficult and perilous.

Weather Summary

Forecast for the Chic-Chocs ridges and summits

A ridge of high pressure will still have influence on Tuesday, but will slowly give way to the next low pressure system expected on Wednesday. Evening and night: Cloudy, winds south 60 to 80 km/h, low -5.Tuesday: Cloudy, winds south 60 to 70 km/h, high -2. Freezing level at 500 meters. Wednesday: Rain in the afternoon, winds southeast 60 to 90 km/h, maximum +1. Freezing level rises to 1500 m. Thursday: Rain or snow, winds from the west 20 to 40 km/h, maximum +1. Freezing level 600 meters.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Carefully evaluate steep lines for wind slabs.
  • Wind slabs may be poorly bonded to the underlying crust.

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.