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

Dec 23rd, 2023–Dec 24th, 2023

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

Regions

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

Choose conservative terrain as snow and wind continue. Minimize exposure to overhead hazard, fresh wind slabs will form as snowfall increases over the day.

Confidence

Moderate

Avalanche Summary

On Wednesday size 1 natural wind slabs were reported from north facing alpine slopes, during active wind loading. Slabs may remain reactive to human triggers.

If you do go into the backcountry, consider submitting a Mountain Information Network report.

Snowpack Summary

By Sunday morning 20 cm of storm snow is expected at White Pass with another 20 cm likely over the day. Strong winds will rapidly build sensitive wind slabs on north and east facing terrain features. West and south facing slopes (windward), have likely been scoured by the strong winds or have dense, wind packed snow.

Below 1200 m, a thick crust is present approximately 50 cm above the ground. This crust is well bonded to the snow around it.

The middle and lower snowpack is reported to be well settled and bonded. Snow depth varies from 75-200 cm through this region.

Weather Summary

Saturday Night

Cloudy with up to 20 cm of snow likely, southwest winds 60-100 km/h, treeline temperature -7 °C. 

Sunday

Cloudy with another 20 cm of snow possible. Southerly winds ease, 50-70 km/h. Treeline temperatures rise to -3 °C.

Monday

Cloudy with 5-10 of snow. Southerly winds 40-60 km/h. Treeline temperatures -5 °C.

Tuesday

Partly cloudy with 60 km/h westerly winds. 10-20 cm of snowfall possible.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Wind slabs are most reactive during their formation.
  • Watch for newly formed and reactive wind slabs as you transition into wind affected 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.