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Archived

Avalanche Forecast

Mar 6th, 2025–Mar 7th, 2025
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
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

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

New snow and wind are forming fresh, reactive slabs in leeward terrain features. Seek out wind-sheltered terrain for the best and safest riding.

Confidence

Moderate

Avalanche Summary

On Monday a size 1.5 wind slab was observed in the White Pass. On Sunday, size 2 avalanches were reported in the Three Guardsman area of Haines Summit.

Looking forward, wind slabs are likely to be reactive naturally and to rider triggers.

Snowpack Summary

By the end of the day Friday, 10 to 20 cm of new snow sits over a variety of surfaces, including a melt-freeze crust on solar slopes and hard wind-affected surfaces or faceted snow and surface hoar on shady slopes. Strong southwesterly winds have loaded deeper deposits on lee slopes.

A weak layer of facets and a crust from early December is buried 60 to 150 cm deep on all aspects up to 1750 m. This layer has not produced recent avalanche activity or test results and is not currently a concern.

Snow depth varies from 100 cm at highway elevations to over 200 cm in the alpine.

Weather Summary

Thursday night

Cloudy with a trace of snow. 30 to 40 km/h south ridgetop wind. Treeline temperature -5 °C.

Friday

Mostly cloudy with 10 to 15 cm of snow. 40 to 50 km/h southeast ridgetop wind. Treeline temperature -5 °C.

Saturday

Partly cloudy with 5 to 10 cm of snow. 20 to 40 km/h southeast ridgetop wind. Treeline temperature -5 °C.

Sunday

Partly cloudy. 20 to 30 km/h southeast ridgetop wind. Treeline temperature -7 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Dial back your terrain choices if you are seeing more than 20 cm of new snow.
  • Avoid freshly wind-loaded features, especially near ridge crests, rollovers, and in steep terrain.
  • Seek out sheltered terrain where new snow hasn't been affected by wind.

Avalanche Problems

Wind Slabs

Fresh wind slabs are forming in leeward terrain features. Natural and human triggering is likely.

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

Elevations: Alpine, Treeline.

Likelihood: Likely

Expected Size: 1 - 2