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Avalanche Forecast

Archived

Jan 13th, 2023–Jan 15th, 2023

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

Regions

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Developing storm slabs will remain sensitive to avalanche triggering throughout Saturday, particularly in downwind accumulation areas and on steep slopes,

With the end of precipitation and settling, conditions will stabilize a little more for Sunday.

Confidence

Moderate

Avalanche Summary

No new avalanche activity has been observed or reported.

More and more relevant information is shared by users with the Mountain Information Network. Thank you for contributing to the collection of this valuable data! You can also continue to write to us at [email protected].

Snowpack Summary

With the storm snow, 25 to 40 cm of new snow cover the January 2 melt-freeze crust that supports the weight of a skier or snowboarder. The middle of the snowpack seems well consolidated, and there is a combo of laminated crusts and decomposing facets dating from December 8 at the base.

In general, the thickness of the snowpack varies from 110 to 130 cm depending on the sector and the elevation.

Weather Summary

Synopsis: The passage of a major low pressure system south of Gaspésie will leave significant amounts of snow until Saturday morning. Clearing will follow and sunshine is forecasted for Sunday.

Friday evening and night: Snow at times heavy, 10-15 cm, northeasterly winds 30 to 50 km/h, minimum -10 C, freezing level at valley bottom.

Saturday: Flurries ending in the morning then cloudy, northeasterly winds 20 to 40 km/h, maximum -12 C, freezing level at valley bottom.

Sunday: Sunny, northeasterly winds 30 to 50 km/h, maximum -9 C, freezing level at valley bottom.

Monday: Periods of snow, 5-10 cm, easterly winds 40 to 60 km/h, maximum -5 C, freezing level at valley bottom.

Terrain and Travel Advice

  • Be careful to keep storm day fever from luring you out into bigger terrain features.
  • Continue to make conservative terrain choices while the storm snow settles and stabilizes.
  • Be aware of the potential for human triggerable storm slabs at lower elevations, even on small features.
  • Storm slabs in motion may step down to deeper layers resulting in large avalanches.

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.