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Archived

Avalanche Forecast

Apr 12th, 2015–Apr 13th, 2015
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
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.

Winter has returned!  Recently buried surface hoar and crusts in the upper snowpack. Watch for reactive wind effected snow up high and sluffing in steep terrain on northerly aspects. Solar radiation will have a strong effect if it comes through.

Weather Forecast

Partial clearing later today as a weak ridge of high pressure builds over the Interior. Snowfall tapering off this morning to light flurries with alpine winds still expected to remain in the moderate to strong from the west. Freezing levels will rise to ~1300m. Light snow is expected tonight into tomorrow morning.

Snowpack Summary

Up to 40cm of new recent storm snow. The storm layer sits atop a crust on solar aspects and surface hoar on sheltered N aspects. The upper 40-50cm of the snowpack is dry with moist snow below it. Multiple crusts in the top 1.5m of the snowpack over well settled snow.

Avalanche Summary

No new avalanches observed yesterday.

Confidence

Avalanche Problems

Storm Slabs

40cm of recent storm snow sits over surface hoar on northerly aspects. Associated winds with the storms have been enough to create slabs in exposed areas. Its time to select more conservative terrain.
Be cautious as you transition into wind affected terrain.Watch for whumpfing, hollow sounds, shooting cracks or recent avalanches.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 3