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Archived

Avalanche Forecast

Feb 1st, 2025–Feb 2nd, 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
1: Low
The avalanche danger rating at treeline will be low
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
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold

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

If you venture out in the cold, even a small issue can become a big problem.

Avalanches are of greatest concern in areas with a transition from shallow to deep snow.

Confidence

Moderate

Avalanche Summary

No new avalanches were reported this week.

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 areas that are shallow and rocky.

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 fell with strong southwest wind that has switched to strong northeast. Watch for reverse loaded slopes hiding pockets of hard 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

Saturday Night

Clear. 50 to 70 km/h north ridgetop wind. Treeline temperature -30 °C.

Sunday

Mix of sun and cloud. 50 to 70 km/h north ridgetop wind. Treeline temperature -20 °C.

Monday

Mostly sunny. 50 to 70 km/h northeast ridgetop wind. Treeline temperature -24 °C.

Tuesday

Mostly clear. 40 to 60 km/h northeast ridgetop wind. Treeline temperature -21 °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

New wind slabs are building on non-typical areas with northeasterly outflow winds.

Aspects: South, South West, West.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 1 - 2