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Avalanche Forecast

Archived

Apr 8th, 2024–Apr 9th, 2024

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

Regions

North Rockies, Sugarbowl, East Kakwa, McGregor, Pine Pass, Tumbler.

New snow and wind will continue to promote wind slab development in high elevation terrain through the day Tuesday.

Confidence

Moderate

Avalanche Summary

There have been no new reports of avalanche activity in the past few days

If you are getting out in the backcountry, let us know what you are seeing by making a post on the MIN (Mountain Information Network).

Snowpack Summary

5-10 cm of snow may accumulate through Monday night and Tuesday at upper elevations. Expect southwest winds to redistribute this into alpine and treeline lee terrain. This may be sitting on a hard crust on all aspects to at least 1600 m. Below, the snowpack is generally settled and well bonded.

Weather Summary

Monday Night

Cloudy with 3-10 cm snow at higher elevations. Ridgetop wind southwest 30 to 50 km/h . Treeline temperature -5 °C. Freezing level 1000 m.

Tuesday

Mainly cloudy with 1 to 3 cm of snow at upper elevations. Ridgetop wind northwest 15 to 30 km/h. Treeline temperature -2 °C. Freezing level 1500 m.

Wednesday

Mix of sun and cloud. Ridgetop wind southwest 10 to 25 km/h. Treeline temperature -1 °C. Freezing level 1700 m.

Thursday

Mainly cloudy with scattered flurries. Ridgetop wind southwest 10 to 25 km/h. Treeline temperature 0 °C. Freezing level 1700 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
  • Wind slabs may be poorly bonded to the underlying crust.
  • 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.