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Avalanche Forecast

Archived

Mar 11th, 2025–Mar 12th, 2025

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

The extent of the wind slab danger will depend on the amount of snow received on Wednesday morning.

The heavier the precipitation, the more crucial it will be to exercise caution in your decisions.

Confidence

Moderate

Avalanche Summary

No new avalanches observed or reported.

If you are out in the backcountry, please share your observations on the Mountain Information Network (MIN).

Snowpack Summary

The west and north-facing slopes of the alpine and tree line are generally bare or covered with a crust. The new snow has been deposited on top of this crust on the lee slopes to the east and south. However, strong winds have introduced significant spatial variability, with snow densities and wind slabs of very diverse characteristics.

Below the tree line, a layer of low-density snow, ranging from 10 to 25 cm, covers the crust, which typically supports the weight of a person.

The snowpack depth varies between 100 cm and 200 cm.

Weather Summary

WEATHER FOR THE CRESTS AND SUMMITS OF CHIC-CHOCS

A little snow accompanies the passage of a low-pressure system over the Chic-Chocs, followed by a high-pressure ridge and rather cold weather on Wednesday.

Tuesday evening and night: Snow, 5 to 10 cm. Southwest winds at 40 to 60 km/h shifting to northwest at 40 to 60 km/h. Rapid cooling to a low of -13 °C.

Wednesday: Alternating sun and clouds. Northwest winds at 30 to 50 km/h. High of -18 °C.

Thursday: Sunny. Light southwest winds. High of -7 °C.

Friday: Alternating sun and clouds. Winds from the west at 30 to 50 km/h. High of +1 °C. Freezing level at 580 m.

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

Terrain and Travel Advice

  • Wind slabs are most reactive during their formation.
  • Be careful with wind-loaded pockets, especially near ridge crests and rollovers.
  • Carefully evaluate steep lines for wind slabs.

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.