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Archived

Avalanche Forecast

Jan 25th, 2020–Jan 26th, 2020
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
2: Moderate
The avalanche danger rating below treeline will be moderate
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
3: Considerable
The avalanche danger rating below treeline will be considerable
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
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: Glacier.

Heads up if the sun comes out today!

Give fresh storm slabs a chance to bond to old layers.

Weather Forecast

Today: A mix of sun and cloud. No precip. Freezing levels at 1300m with alpine high of -5 C. Winds light from the south.

Tonight: Cloudy with clear periods and isolated flurries. Winds light from the south. Freezing level 900m.

Tomorrow: Flurries, 7cm. Freezing levels rising to 1600m. Winds light from the SW gusting to 45 km/h.

Snowpack Summary

20cm new storm snow was accompanied by light to mod S winds and warm temperatures. Rain below 1000m yesterday. New snow overlies a strong midpack, with the exception of the Dec 27th surface hoar/crust down 100cm and the Dec 11th surface hoar down 150cm.

Avalanche Summary

Yesterday's artillery control produced numerous size 2-2.5 avalanches, and a few size 3.5s. A natural cycle was also occurring the past two days from steep alpine terrain, and in some cases running to valley bottom. Skier accidentals this week on MacDonald West Shoulder # 4 (see photo here), Video Peak and Grizzly Colouir (see MIN).

Confidence

Due to the number of field observations

Avalanche Problems

Storm Slabs

20cm of new snow in the past 2 days fell with warm temperatures and moderate S winds, promoting the development of reactive slabs. The sun could initiate another natural avalanche cycle today.

  • Avoid convexities and unsupported features.
  • Use caution in lee and cross-loaded terrain near ridge crests.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely

Expected Size: 1 - 3