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Avalanche Forecast

Archived

Apr 6th, 2023–Apr 7th, 2023

Alpine
Natural avalanches unlikely, human triggered possible.
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.

More fear than harm with the storm, which finally brought some heat and left very little rain !

The cold, snow and wind are back for Friday, which will promote the formation of new small isolated wind slabs to watch out for in the alpine.

Confidence

Moderate

Avalanche Summary

No new avalanches have been 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

The light rain and especially the mild temperatures have certainly affected the surface of the snowpack, which is showing a new melt-freeze crust that should be covered with a few centimeters of snow. Just below, 15 to 35 cm of snow covers the March 26 melt-freeze crust.

In the alpine and treeline, strong winds have redistributed these accumulations, forming an interface of soft and hard slabs that are upside down in some places.

The middle of the snowpack is well consolidated, and of increasing density, interspersed with several melt freeze crusts from the last few weeks.

Weather Summary

Forecast for the Chic-Chocs ridges and summits.

Synopsis: Following the passage of the storm, the return of temperatures below the freezing point brings some snow for Friday.

Thursday evening and night: Cloudy with little chance of rain, less than 1 mm, southwesterly winds 20 to 30 km/h, increasing temperature up to +2 C, freezing level at 1300 m.

Friday: Cloudy with flurries, 5 cm, northwesterly winds 30 to 50 km/h, falling temperature down to -7 C, freezing level back to valley bottom.

Saturday: A mix of sun and rain, no precipitation, northwesterly winds 30 to 40 km/h, maximum -12 C.

Sunday: Increasing cloudiness, no precipitation, northwesterly winds 30 to 40 km/h, maximum -6 C.

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

Terrain and Travel Advice

  • Carefully evaluate steep lines for wind slabs.
  • 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.