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Avalanche Forecast

Archived

Mar 29th, 2024–Apr 1st, 2024

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

Regions

Chic-Choc Mountains.

👉 ATTENTION - VALID FOR SATURDAY, MARCH 30 UNTIL MONDAY, APRIL 1 👈

The snowpack will remain unstable for a few more days. Take the time to read up on avalanche problems before venturing into the mountains. A watch for the out-of-zone areas has been issued for the weekend. You can consult it on the Avalanche Québec website.

Confidence

Low

Avalanche Summary

An accident involving snowmobilers occurred on Tuesday, March 26, near La Martre, just outside our forecast area. For more details, please consult the MIN report.

If you head into the backcountry, thanks for sharing your observations on the Mountain Information Network (MIN).

Snowpack Summary

Rainfall continues to make the upper part of the snowpack isothermal, allowing water to percolate down to the underlying crusts. The top 40 to 50 cm of snow is now moist or wet.

There is a crust 20 cm below the surface and another 40 cm below. Water seems to be percolating onto the deeper crust. The bottom of the snowpack is an ice loaf that is slowly breaking up.

Since Wednesday's rains began, we've lost nearly 30 cm of snowpack height.

Weather Summary

Synopsis: Still plenty of precipitation forecast for the start of the Easter vacation. Weather models disagree on the expected amount of rain versus snow. It looks like the coast and the western Chic-Chocs will receive more snow. From Saturday morning, temperatures should remain below freezing.

Friday evening and night: Rain. 25 to 40 mm of rain or freezing rain. Easterly wind, 20 to 40 km/h. Inversion in the mountains, maximum +6 at altitude and -1 in the valleys.

Saturday: Cloudy. 5 to 10 cm. Wind northwest, 40 to 60 km/h. Cooling to -6.

Sunday: Cloudy. 3 to 5 cm. Wind northwest, 20 to 30 km/h. High -5.

Monday: Sunny. Light northwest wind, 10 to 20 km/h. High -4.

For more details, check out the most recent alpine weather forecast.

Terrain and Travel Advice

  • Approach lee and cross-loaded slopes with caution.
  • Keep in mind that wet avalanches can be destructive due to their high density.

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.

Wet Slabs

Wet Slab avalanches are the release of a cohesive layer of snow (a slab) that is generally moist or wet when the flow of liquid water weakens the bond between the slab and the surface below (snow or ground). They often occur during prolonged warming events and/or rain-on-snow events. Wet Slabs can be very unpredictable and destructive.