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Archived

Avalanche Forecast

Mar 28th, 2022–Mar 29th, 2022
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
3: Considerable
The avalanche danger rating below treeline will be considerable
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
1: Low
The avalanche danger rating below treeline will be low
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
1: Low
The avalanche danger rating below treeline will be low

Regions: Little Yoho.

The hazard will be low in the morning but will increase through the day as the surface crust breaks down with solar input and rising freezing levels.

Weather Forecast

A mix of sun and cloud on Tuesday with freezing levels up to 2100m and light west winds. Cooler temperatures and increasing cloudiness with isolated flurries expected on Wednesday and Thursday. 

Snowpack Summary

Surface melt freeze crusts exist on all aspects up to approx. 2300m. On high elevation north aspects dry snow can be found. The mid-pack is well settled but has several persistent layers consisting of crusts and/or facets. These are currently unreactive to skier triggering but may wake up as spring heat penetrates the snowpack.

Avalanche Summary

A ski touring party reported a cornice triggered size three slab on the north side of Cathedral Peak on Sunday. The local ski hills reported size one skier triggered wet loose avalanches below treeline on Monday.

Confidence

Freezing levels are uncertain

Avalanche Problems

Loose Wet

Warming daytime temperatures and high freezing levels will increase the possibility of a loose wet problem at treeline and below in the afternoon. Even short period of solar inputs may cause a rapid deterioration of the snowpack.

  • Use extra caution on solar slopes or if the snow is moist or wet.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Possible - Likely

Expected Size: 1 - 2

Cornices

After several days of warm temperatures cornices are weak and susceptible to failure. Cornices may trigger larger avalanches on slopes below.

  • Pay attention to overhead hazards like cornices which could easily trigger persistent slabs.

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

Elevations: Alpine.

Likelihood: Possible - Likely

Expected Size: 1.5 - 3