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Avalanche Forecast

Archived

Feb 23rd, 2022–Feb 24th, 2022

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

Regions

Yukon.

Terrain sheltered from the wind still holds soft snow. Stiff windslabs are unlikely to avalanche under the weight of a rider, but they can make for challenging riding conditions. 

Good backcountry safety and travel habits are still important.

Confidence

High - Confidence is due to a stable weather pattern with little change expected.

Weather Forecast

Wednesday Night: Clear. No new snow expected. Moderate southwest ridgetop wind. Alpine temperatures around -7 °C.

Thursday: A mix of sun and cloud. No new snow expected. Moderate to strong southwest ridgetop wind. Possible temperature inversion could make for temperatures warmer than -5 °C above 2000 m.

Friday: Mostly cloudy. 0-2 cm of snow expected. Strong to extreme southwest ridgetop wind. Temperature inversion breaking down. Alpine high around -7 °C.

Saturday: Mostly cloudy. 0-5 cm of snow expected, and another 2-5 through the day. Moderate to strong southeast ridgetop wind. Alpine high around -8 °C.

Avalanche Summary

We have received no reports of recent avalanche activity.

Snowpack Summary

Surface snow has been extensively wind affected by outflows on Monday followed by strong southwest flow Tuesday, and is very firm in exposed areas. 

A shallowly buried crust (around 20 cm deep) extends up to at least 1200 m on all aspects. It appears to be well bonded to surrounding snow, and is beginning to break down. Below this, the mid-pack is generally well-settled and strong in most areas. The basal snowpack consists of weak, sugary facets.

Terrain and Travel

  • Sheltered slopes at lower elevations will offer the best riding.
  • Recent wind has varied in direction so watch for wind slabs on all aspects.
  • Watch for signs of instability like whumpfing, hollow sounds, shooting cracks or recent avalanches.
  • Small avalanches can have serious consequences in extreme terrain. Carefully evaluate your line for wind slab hazard before you commit to it.

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.