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Archived

Avalanche Forecast

Mar 26th, 2022–Mar 27th, 2022
Alpine
1: Low
The avalanche danger rating in the alpine will be low
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate
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
2: Moderate
The avalanche danger rating below treeline will be moderate
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
1: Low
The avalanche danger rating below treeline will be low

Regions: Little Yoho.

A forecasted warming trend Sunday will deteriorate snowpack at lower elevations. Even short period of solar inputs may cause higher than expected reactivity of the loose wet problem.

Weather Forecast

Minimal re-freeze Saturday night at valley bottom. Freezing levels Sunday are expected to reach 2200m with valley bottom high temps near +8. Light precipe with minimal accumulation and moderate to strong winds are forecasted Sunday. The possibility of solar inputs could deteriorate the snowpack structure at lower elevations quickly.

Snowpack Summary

Surface melt freeze crusts extend high into the alpine on solar aspects. On shady aspects, 10cm of snow from Thursday AM is well settled. Several persistent layers are buried in the snowpack, consisting of crusts and/or facets. These are currently unreactive but may wake up in the future as spring heat starts to penetrate deeper in the snowpack.

Avalanche Summary

No new avalanche observations Saturday. Forecast team observed more evidence of last Wednesdays avalanche cycle.

Confidence

Avalanche Problems

Loose Wet

Less overnight recovery at valley bottom Saturday and a forecasted warming trend Sunday will increase the possibility of a loose wet problem at treeline and below. Even short period of solar inputs may cause a rapid deterioration of the snowpack.

Aspects: All aspects.

Elevations: Treeline, Below Treeline.

Likelihood: Possible

Expected Size: 1 - 1.5