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Avalanche Forecast

Archived

Dec 18th, 2023–Dec 19th, 2023

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

Regions

Chic-Choc Mountains.

Your observations are important! If you head out on the field Tuesday, make sure to fill in a MIN to share your findings with us.

Confidence

Low

Avalanche Summary

Early season, observations are limited. Thanks for sharing your observation through the Mountain Information Network if you head out.

No new avalanches have been observed or reported. Please share your observations at [email protected] or via the Mountain Information Network.

Snowpack Summary

As a result of the rain, the snowpack has reduced considerably. In the alpine and at treeline, the lees previously loaded by the typical winds from the north, and area of pressed snow may have been a little less affected. In exposed areas and below the treeline, several spots are uncovered, and we suspect that complete areas are now back to the ground. Generally speaking, at all altitudes, the top of the snowpack is wet snow.

Temperatures should drop below zero by midday, creating a crust on the surface. Previously buried natural obstacles are now exposed, so don't rely on observations from your last day out.

Weather Summary

Synopsis: The major system affecting us will continue its path towards Labrador overnight, putting an end to precipitation.

Monday evening and night: Cloudy. Rain. Southerly winds up to 150 km/h. 8C. Freezing level 3,000m.

Tuesday: Cloudy. Rain ceasing in the morning. South winds from 55 to 65 km/h. Temperature dropping below zero in pm.

Wednesday: Sunny. Trace of snow. Winds from the west from 40 to 45 km/h. -6C.

Thursday: Alternating sun and cloud. 2 to 4 cm of snow. North winds from 60 to 75 km/h. -18C.

Terrain and Travel Advice

  • Avoid shallow snowpack areas, rock outcroppings and steep convex terrain where triggering is most likely.
  • Watch for unstable snow on specific terrain features, especially when the snow is moist or wet.

Problems

Loose Wet

Loose Wet avalanches are the release of wet unconsolidated snow or slush. These avalanches typically occur within layers of wet snow near the surface of the snowpack, but they may quickly gouge into lower snowpack layers. Like Loose Dry Avalanches, they start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-wet avalanches include point-release avalanches or sluffs. Loose Wet avalanches can trigger slab avalanches that break into deeper snow layers.

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.