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Archived

Avalanche Forecast

Apr 8th, 2016–Apr 9th, 2016
Alpine
Below Threshold
The avalanche danger rating in the alpine will be below threshold
Treeline
Below Threshold
The avalanche danger rating at treeline will be below threshold
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold
Alpine
Below Threshold
The avalanche danger rating in the alpine will be below threshold
Treeline
Below Threshold
The avalanche danger rating at treeline will be below threshold
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold
Alpine
Below Threshold
The avalanche danger rating in the alpine will be below threshold
Treeline
Below Threshold
The avalanche danger rating at treeline will be below threshold
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold

Regions: Banff Yoho Kootenay.

Heating over the last two days has added a lot of heat to the snowpack. Expect crusts to break down quickly at lower elevations despite the cooler temperatures that are forecast. Spring Conditions !

Weather Forecast

Following the hot and sunny conditions Thursday and Friday, passage of a cold front late Friday promises to bring cooler temperatures for Saturday with freezing levels peaking at around 2200m through Sunday. Watch for sunny periods to bring heating on both days with a bit more clearing likely on Sunday.

Snowpack Summary

The morning snowpack is strong when frozen, but this can rapidly break down with warming. In many places the snowpack is sitting on a deep persistent layer of facets that has been avalanching with solar heating over the previous week. Telemetry stopped working at 2200 yesterday evening.

Avalanche Summary

Reasonably strong heating today likely generated a cycle of loose wet avalanches mainly on S and W aspects.

Confidence

Avalanche Problems

Deep Persistent Slabs

Deep facet layers remain weak especially in thin snowpack areas.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 2 - 4

Loose Wet

In the afternoon any steep slopes should be avoided when the crust on top of the snowpack melts. Expect this predominantly at lower elevations and on sun exposed slopes for the weekend. Start early and finish early!

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Possible - Likely

Expected Size: 1 - 3