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Archived

Avalanche Forecast

Dec 22nd, 2023–Dec 23rd, 2023
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold

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

Watch for fresh wind slabs forming as snowfall increases over the day.

Head to sheltered terrain at treeline to avoid old and new slabs

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

Storm snow from last week has been redistributed into north and east facing alpine and treeline features. West and south facing slopes (windward), have 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

Friday Night

Mostly cloudy with 1-3 cm of snow, southwest winds 20 to 30 km/h.

Saturday

Cloudy with 10 cm of snow possible, southwest winds 40-80 km/h, treeline temperature -7 °C. 

Snowfall intensifies overnight with 20 cm expected.

Sunday

Cloudy with 5-15 cm of snow. Southerly winds 50-70 km/h. Treeline temperatures rise to -3 °C.

Monday

Cloudy with 5-10 of snow. Southerly winds 50-70 km/h. Treeline temperatures -3 °C.

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 are most reactive during their formation.
  • Seek out wind sheltered terrain below treeline where you can avoid wind slabs and find great riding.

Avalanche Problems

Wind Slabs

Wind slabs formed on Wednesday may be more stubborn to human triggers, while fresh snow and wind on Friday are likely to form small but reactive slabs.

Aspects: North, North East, East, North West.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2