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Avalanche Forecast

Archived

Mar 23rd, 2023–Mar 24th, 2023

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

Regions

Chic-Choc Mountains, Littoral, Murdochville.

The problems created by the storm on Thursday night need some time to stabilize. Don't let Friday's mild weather and the powder fever affect your decisions.

Avoid starting zones, cross loaded slopes, and steep convex, and opt for low consequence terrain while the snowpack find its balance.

Confidence

Low

Avalanche Summary

No new avalanches were observed or reported.

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

10 to 15 cm of new snow already fell on the Chic-Chocs on Friday morning. The strong to extreme winds have affected the alpine and exposed features, which are showing a multitude of surfaces (soft and hard slabs, sastrugi, ice, pressed snow). In sheltered areas, this new snow rests on a 5 to 20 cm layer of slightly denser snow. The melt freeze crust of March 18, present at all altitudes, is now down 15 to 35 cm. Below 500m and on the solar aspects, we find a thin melt freeze crust below these 10 to 15 cm of new snow.

The mid-snowpack is well consolidated and right-side up. The base of the snowpack is composed of laminated crusts. In general, the height of the snowpack varies from 100 to 120 cm in the valley to 140 to 190 cm at the treeline.

Weather Summary

Forecast for the Chic-Chocs ridges and summits.

Synopsis: A low-pressure system will bring a significant amount of snow and strong winds Thursday night.

Thursday night and overnight: Cloudy. 10 to 15 cm of snow. Southerly winds from 45 to 55 km/h. Min. -7C.

Friday: Cloudy. 2 to 3 cm of snow. Winds from 15 to 20 km/h from the northwest. Max. -6C.

Saturday: Mostly sunny. No precipitation. Winds from 5 to 10 km/h from the north. Max. -3C.

Sunday: Cloudy. 1 to 2 cm of snow. Winds from 35 to 45 km/h from the southeast. Max. -8C.

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

Terrain and Travel Advice

  • Storm snow and wind is forming touchy slabs. Use caution in lee areas in the alpine and treeline.
  • Continue to make conservative terrain choices while the storm snow settles and stabilizes.
  • Caution around convexities or sharp changes in terrain.

Problems

Storm Slabs

Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-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.