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Archived

Avalanche Forecast

Jan 30th, 2025–Jan 31st, 2025
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
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
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

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

Seek out areas with soft snow on the surface, and no large slopes above you.

Uncertainty about a buried weak layer warrants conservative terrain choices.

Confidence

Moderate

Avalanche Summary

No new avalanches were reported Wednesday or Tuesday. On Monday, a few size 1 to 2 natural avalanches occurred on northeast alpine slopes.

There have been no recent reports of persistent slab avalanches, but uncertainty remains. Snowpack test results and whumpfing suggest it may still be triggerable in some areas.

Snowpack Summary

Up to 25 cm of new snow fell between Monday and Wednesday. Expect lesser amounts of new snow the further inland you go. It came with strong southwest wind that has switched to northeast. Watch for reverse loaded slopes hiding pockets of windslab

A weak layer of facets and a crust from early December is buried 50 to 100 cm deep. This layer exists on all aspects up to around 1700 m.

At the highway elevation the snow is 120 cm deep and in the alpine there is more than 200 cm.

Weather Summary

Thursday Night

Mostly cloudy with flurries. 20 to 30 km/h east ridgetop wind. Treeline temperature -20 °C.

Friday

Mix of sun and cloud. 30 to 50 km/h northeast ridgetop wind. Treeline temperature -25 °C.

Saturday

Mostly sunny. 40 to 60 km/h ridgetop wind. Treeline temperature -26 °C.

Sunday

Partly sunny. 50 km/h north ridgetop wind. Treeline temperature -30 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be aware of the potential for large avalanches due to buried weak layers.
  • Avoid shallow, rocky areas where the snowpack transitions from thick to thin.
  • Avoid freshly wind-loaded terrain features.

Avalanche Problems

Persistent Slabs

The early December weak layer may still be triggered in shallow, thin-to-thick areas, or with large loads like a cornice or avalanche.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 2 - 3.5

Wind Slabs

Fresh windslabs are building on non-typical areas with northeasterly winds.

Aspects: South, South West, West.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 2