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Avalanche Forecast

Archived

Dec 15th, 2023–Dec 16th, 2023

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.
Treeline
Natural avalanches unlikely.
Below Treeline
Below Threshold.

Regions

Chic-Choc Mountains.

There is some doubt about the snow available for transport in the alpine.

Assess carefully your line for signs of wind slabs, and remember that they are at their most sensitive during their formation.

Confidence

Low

Avalanche Summary

Early season, observations are limited. Thanks for sharing your observation through the Mountain Information Network if you head out.

No new avalanches have been observed or reported. Please share your observations at [email protected] or via the Mountain Information Network.

Snowpack Summary

The winds from the past couple of days have redistributed the available snow. The summits are back to ice, and greater accumulations can be found on the eastern slopes. In general, 10 to 20 cm of low-density snow covers the December 11 crust, and facets can be found above and below it. The November 28 crust is between 20 and 40 cm deep and rests on facets in the north of the region.

Weather Summary

Synopsis: A cold front and the ice-free St-Lawrence will leave a few centimetres overnight and early tomorrow morning. Temperatures will drop and winds are going to be noteworthy.

Friday evening and night: Cloudy. 1 to 2 cm of snow. Winds from 65 to 75 km/h from the west. -10C. Freezing level at valley bottom.

Saturday: Increasing sun. 1 to 2 cm of snow. Northwest winds from 45 to 55 km/h. -15C. Freezing level at valley bottom.

Sunday: Generally cloudy. No precipitation. Southwest winds from 90 to 100 km/h. Inversion, it will be warmer at higher elevation. Maximum 1C.

Monday: Cloudy. Rainy. Winds from 90 to 100 km/h from the south. 5C.

Terrain and Travel Advice

  • Carefully evaluate steep lines for wind slabs.
  • Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
  • Be carefull around freshly wind loaded features.

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.