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Avalanche Forecast

Archived

Feb 17th, 2024–Feb 18th, 2024

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.
Below Treeline
Below Threshold.

Regions

Yukon, Tutshi, Wheaton, White Pass East, White Pass West.

Low hazard does not mean no hazard.Check for wind slabs before committing to high-consequence terrain.

Confidence

High

Avalanche Summary

A large (size 2) natural slab avalanche was reported on Thursday in the alpine. Click on the picture for full details.

Snowpack Summary

Variable conditions exist at all elevations, including crusty and wind-affected snow. Soft snow and good riding can still be found in sheltered north-facing terrain. New surface hoar has formed at treeline.

A layer of surface hoar may be found down 20 - 60 cm in isolated north-facing terrain features.

A thick melt-freeze crust is buried 50 - 100 cm and exists below 1500 m.

Weather Summary

Saturday Night

Cloudy with trace amounts of new snow, 35 km/h south alpine wind, treeline temperature -8°C.

Sunday

Cloudy, with a trace of new snow, 30 km/h southwesterly alpine wind, treeline temperatures near -2°C.

Monday

Cloudy, with 1-3 cm of new snow. 30-40 km/h southwesterly alpine wind, treeline temperatures near -3°C.

Tuesday

Mostly cloudy with 1-4 cm of new snow, 60 km/h southwesterly alpine wind, treeline temperature -3°C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Seek out sheltered terrain where new snow hasn't been wind-affected.
  • Carefully evaluate steep lines for wind slabs.
  • 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.