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Archived

Avalanche Forecast

Mar 29th, 2018–Mar 30th, 2018
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
1: Low
The avalanche danger rating below treeline will be low
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
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Glacier.

Skier/Rider triggered avalanches are possible today. Extra caution should be exercised on steep slopes where crusts are buried under the new snow and where the wind has affected the storm snow.

Weather Forecast

Today is starting off with some sun, that will make way for clouds near noon and snow falling shortly after. FL will rise to 1300m, mod winds from the SW. No significant accumulation today, but we could see 20cm by tomorrow morning. Friday night into Saturday, there will be a break in the weather before the next low moves over Rogers pass.

Snowpack Summary

30cm in the past 48hrs brings the weekly total to 60cm of storm snow. Moderate to strong winds have redistributed the new snow into wind slab on lee features. Watch for a buried crust up to 2000m on all aspects and on steep solar aspects into the alpine down 30-60cm.

Avalanche Summary

Vague report from a MIN of Puff Daddy, skier accidental? Healthy size 2, ran 200 meters in length, crown up to 1m deep in and 50m wide. A field team in the Illecillewaet area yesterday, observed limited and small activity that occurred during the storm on March 27. Artillery control on the 27th produced results up to size 3.0.

Confidence

Due to the number of field observations

Avalanche Problems

Storm Slabs

60cm of storm snow buries a crust up to 2000m on all aspects and into the alpine on solar aspects. 30cm of new snow is settling quickly could be reactive to human presence. Moderate to strong winds have formed wind slabs on lee features.
The storm slab may be more sensitive to human triggering on solar aspects where it sits on a crustUse caution in lee areas. Recent wind loading have created wind slabs.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2

Cornices

Cornices are hard to predict and have been sporadically failing in the park triggering avalanches to size 2.5. New snow, wind and temperature increases are a great recipe for cornice triggered avalanches.
Give cornices a wide berth when travelling on or below ridges.Extra caution needed around cornices with current conditions.

Aspects: All aspects.

Elevations: Alpine.

Likelihood: Possible

Expected Size: 1 - 2.5