Avalog
Register
Get forecast notifications
Create an account to receive email notifications when forecasts are published.
Register
Login
Archived

Avalanche Forecast

Jan 1st, 2025–Jan 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
1: Low
The avalanche danger rating in the alpine will be low
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.

Use extra caution on wind-loaded terrain features where a slab has formed over a crust. Evaluate snow and terrain carefully before entering high-consequence slopes

Confidence

Moderate

Avalanche Summary

On Tuesday, our field team noted a natural size 2 slab avalanche on a north aspect at 1300m. (See photo below). The slab was 20-30 cm deep and failed on facets above a crust, which is the weak layer described in the snowpack summary below.

Reports have been limited, if you head out in the mountains, please consider sharing your observations on the Mountain Information Network.

Snowpack Summary

The primary layer of concern is a layer of weak, facetted, snow that overlies a crust. In most areas, it is buried 20 to 30 cm deep, and extends up to 1750 m. Wind slabs are expected to be more reactive where they have formed over this weak layer.

Further inland regions such as Powder Valley and Mt.Tutshi have less snow, and may also have a weak layer of surface hoar on this crust.

Despite the presence of faceted grains in the lower snowpack, there are no current layers of concern below the crust. 

Snowpack depths range from about 70 to 180 cm.

Weather Summary

Wednesday Night

Clear. 10 to 20 km/h east ridgetop winds. Inversion; valley bottom -15 °C, alpine -10 °C

Thursday

Sunny. 15 to 20 km/h ridgetop south winds. Inversion; valley bottom temperature -20 °C, alpine -12°C,

Friday

A mix of sun and cloud. 20 km/h southwest ridgetop wind. Treeline temperature -25 °C.

Saturday

Mostly cloudy, with 0 to 2 cm of snow. 30 to 40 km/h south ridgetop winds. Treeline temperature -25 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Keep in mind a buried crust offers an excellent bed surface for avalanches.
  • Recent wind has varied in direction, so watch for wind slabs on all aspects.
  • Pay attention to the wind; once it starts to blow, sensitive wind slabs are likely to form.

Avalanche Problems

Wind Slabs

Recent winds may have varied in direction so watch for slabs on all aspects. Wind slabs may be more reactive where they overlie weak facets on a hard crust.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2