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Archived

Avalanche Forecast

Dec 18th, 2023–Dec 19th, 2023
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
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
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.

Exercise caution when choosing terrain, especially in Alpine lee areas with significant loaded snow. Take time to discover how the new snow has bonded to existing surfaces.

Confidence

Moderate

Avalanche Summary

No new avalanche activity has been reported since Wednesday.

Check out Sundays min report from the log cabin area.

Reported whumping and cracking near the Big Y drainage on Sunday. Check out this min report for more detail.

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

Snowpack Summary

Recent storm snow of up to 100 cm in the last 5 days combined with south wind redistribution, has led to wind packing on south slopes and deep wind deposition on north slopes. Below 1200 meter elevation, a thick crust is present approximately 50 cm above the ground. Snow depths varies from 75-250 cm depending on the aspect, while the mid and lower snowpack is presenting as settled and bonded.

Weather Summary

Monday Night

Partly cloudy, trace accumulation, ridgetop winds variable 10 km/h, treeline temperature -8 °C. 

Tuesday

Sunny with cloudy periods, no accumulation, ridgetop winds south 15 km/h treeline temperature -12 °C. 

Wednesday

Increasing clouds, 1 to 5 cm accumulation, ridgetop winds southwest 50 to 70 km/h, treeline temperature -12 °C. 

Thursday

Increasing clouds, 5 to 10 cm accumulation, ridgetop winds southwest 50 to 70 km/h, treeline temperature -12 °C. 

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid freshly wind loaded terrain features.
  • Choose low-angled, sheltered terrain where new snow hasn't been wind-affected.

Avalanche Problems

Wind Slabs

Moderate to strong southerly winds, combined with up to 20 cm of new snow, have produced reactive wind slabs in all exposed tree line and alpine features.

Reactive storm slabs should be expected in sheltered areas..

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

Elevations: Alpine, Treeline.

Likelihood: Likely

Expected Size: 1.5 - 2.5