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Avalanche Forecast

Archived

Mar 25th, 2023–Mar 26th, 2023

Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
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.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

Chic-Choc Mountains, Littoral, Murdochville.

Although shallow, the wind slabs will be increasingly reactive throughout the day on Sunday.

Continue to practice good travel and group management habits by skiing the committing lines one at a time and regrouping in safe areas.

Confidence

High

Avalanche Summary

A few wet loose avalanches of size 0.5 were observed directly below rocks, on sunny slopes.

Thanks for contributing to the collection of this valuable data by sharing with other users on the Mountain Information Network or by writing to us directly at [email protected].

Snowpack Summary

The top of the snowpack consists of 10 to 25 cm of new snow with surprisingly little wind effect from Thursday's storm, other than very soft waves of snow on the SW-S-SE aspects. Below 600m and at all elevations on the solar slopes, this new snow is moist on the surface, and should freeze overnight Saturday into Sunday. The mid-snowpack is well consolidated, and right-side up, interspersed with several melt-freeze freezing crusts from the last few weeks.

Weather Summary

Forecast for the Chic-Chocs ridges and summits.

Synopsis: A storm from the Great Lakes beginning Sunday could leave close to 10 cm by Monday.

Saturday night and overnight: Increasing clouds. Trace of snow. Winds from 40 to 50 km/h from the southeast. Min. -6C.

Sunday: Cloudy. 2 to 4 cm of snow. Winds from 30 to 40 km/h from the southeast. Max. -6C.

Monday: Cloudy. 2 to 5 cm of snow. Winds from 10 to 15 km/h from the southeast. Max. -5C.

Tuesday: Mostly cloudy. Trace of snow. Winds from 10 to 15 kph from the northeast. Max. -6C.

For more details, see the Chic-Chocs alpine forecast.

Terrain and Travel Advice

  • Watch for wind-loaded pockets especially around ridgecrest and in extreme terrain.
  • Wind slabs may be poorly bonded to the underlying crust.
  • Wind slabs are most reactive during their formation.

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.