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Avalanche Forecast

Archived

Jan 7th, 2024–Jan 10th, 2024

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

Regions

Waterton Lakes, Waterton.

Windslabs are likely to form as the winds increase from Monday onwards, these may be easily triggered as they form on top of a crust. Lots of exposed hazards still exist below treeline.

Confidence

Moderate

Avalanche Summary

Numerous dry loose avalanches up to size 2 observed from steep terrain on Sunday.

Snowpack Summary

10 - 15 cm of new snow being re-distributed by moderate to strong winds into windslabs. This overlies a melt freeze crust complex in the alpine and at treeline. Due to previous warm temps and rain, there is very little snow on the ground below 1800 m.

Weather Summary

Mon

Partly cloudy with isolated flurries, winds increasing to strong SW. Alpine high of - 10°C

Tues

10 - 15 cm of new snow through the day with strong to extreme SW winds. Alpine high of - 4°C

Wed

Light winds with another 10 - 15 cm of snow possible. Temperature dropping over the day to - 25°C

For more info see: Mountain Weather Forecast.

Tuesday

Terrain and Travel Advice

  • Watch for wind-loaded pockets especially around ridgecrest and in extreme terrain.

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.