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Archived

Avalanche Forecast

Dec 29th, 2023–Dec 30th, 2023
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
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.

6:30 AM Update: With the latest storm bringing more snow and strong wind, watch for newly formed reactive wind slabs.

Confidence

Moderate

Avalanche Summary

No new avalanches have been reported in the region. Natural winds slabs are likely to occur and will be easily triggerable by humans.

If you head into the backcountry please consider submitting your observations to the Mountain Information Network.

Thank you to all who have been submitting lately!

Snowpack Summary

10 to 20 cm of new snow arrived with strong southerly winds. This snow adds to the 25 cm of light snow that was available for wind transport. This could form large wind slabs. The mid and lower snowpack is reported to be well settled, with a thick, well-bonded crust approximately 30 to 50 cm above the ground at elevations below 1200 m. Snow depth ranges from 75 to 200 cm across the region.

Of note, a layer of surface hoar was found in the Halcyon area on Dec 28, check out their MIN

Weather Summary

Friday Night

Cloudy with 5 to 15 cm of snow, with higher accumulations in the White Pass area. Southeast wind, 40 to 70 km/h. Treeline temperature -8 °C.

Saturday

Cloudy with 5 to 10 cm of snow. South wind, 50 to 80 km/h. Treeline temperature rising to -3 °C.

Sunday

Mainly cloudy with trace amounts of new snow. Southwest wind easing through the day, 50 to 20 km/h. Treeline temperature -5 °C.

Monday

Mix of sun and cloud, with no new snow. Southeast wind, 15 to 30 km/h. Treeline temperature -8 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Stay off recently wind loaded slopes until they have had a chance to stabilize.
  • Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
  • Approach steep open slopes at and below treeline cautiously, buried surface hoar may exist.

Avalanche Problems

Wind Slabs

Over 30 cm of snow is available for transport into wind slabs from strong south winds. Be extra cautious when seeking out protected terrain on east aspects, as a layer of buried surface hoar may still exist.

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

Elevations: Alpine, Treeline.

Likelihood: Likely

Expected Size: 1 - 2