Dashboard Regions Weather Stations Radar Alerts Glossary
Contact About
Log In

Register for an account and never miss a forecast again!

Register

Avalanche Forecast

Archived

Feb 1st, 2022–Feb 2nd, 2022

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

Regions

Yukon.

New snow and strong winds are driving the avalanche danger to CONSIDERABLE. Wind slabs will likely be touchy and easily triggered.

Confidence

Moderate - Forecast snowfall amounts are uncertain.

Weather Forecast

Tuesday Night: 5-10 cm of new snow with strong southwest winds at ridgetop. Arctic air is still in place for White Pass with slightly warmer temperatures near -20. 

Wednesday: Another 5-10 cm of snow with moderate to strong southwest wind at ridgetop. Alpine temperatures near -20.

Thursday/ Friday: Continued snow flurries possibly adding another 10 cm with strong southeast wind at ridgetop. Average alpine temperature near -15. 

Avalanche Summary

The Yukon field team spotted a recent natural cornice fall size 2.5 from steep north-facing alpine terrain. 

With increased northerly winds and new snow, I suspect wind slabs will be touchy on Wednesday. 

Snowpack Summary

Forecast new snow and strong winds will likely build fresh wind slabs on leeward slopes and terrain features. Changing winds may load atypical slopes and features. 

Previous strong southerly winds combined with snow created wind slabs on all exposed terrain on north aspects. These wind slabs are generally now well bonded to the surface below but rider triggering could still be possible in specific areas near ridge crests. South aspects are a mix of scoured and pressed surfaces. 

Soft snow can still be found in sheltered features and at lower elevations.

In shallow snowpack areas a layer of loose facets sits at the bottom of the snowpack.

Terrain and Travel

  • Minimize exposure during periods of heavy loading from new snow and wind.
  • Back off if you encounter whumpfing, hollow sounds, or shooting cracks.
  • Use ridges or ribs to avoid areas of wind loaded snow.
  • Recent wind has varied in direction so watch for wind slabs on all aspects.

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.