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Archived

Avalanche Forecast

Apr 25th, 2014–Apr 26th, 2014
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
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
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: Banff Yoho Kootenay.

Variable precip amounts through the forecast area overnight and through the day Saturday is expected to give a nice reset to the stellar spring skiing already out there. Watch for shedding and sluffing from steeper terrain. DK

Weather Forecast

Potentially 15 cm in the higher elevations from this storm system overnight and through the day Saturday. Localized amounts may differ due to convective activity. Temps expected to remain seasonally cold to -6 to -3 with light winds. This precip will likely translate into rain below 1500ms and make it quite wet on low elevation ice climbs.

Snowpack Summary

The new snow will be sitting on a variety of surfaces depending on elevation and aspect. Sun and temperature crusts on solar aspects and lower elevations below 2000ms and expect some sluffing from any steep terrain. Isolated windslabs were reported in the high alpine (3000m) near ridges.

Avalanche Summary

No new avalanches were observed or reported today.

Confidence

Forecast snowfall amounts are uncertain

Avalanche Problems

Wind Slabs

Isolated windslabs have been reported in the higher Alp and has shown to be reactive to skier load.
Use caution in lee areas. Recent wind loading have created wind slabs.

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

Elevations: Alpine.

Likelihood: Possible

Expected Size: 1 - 2

Deep Persistent Slabs

The deep, persistent weakness remains in the snowpack. This problem appears dormant until the next big warm spell, but we continue to note it's presence.
Be aware of the potential for full depth avalanches due to deeply buried weak layers.

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

Elevations: Alpine.

Likelihood: Unlikely - Possible

Expected Size: 2 - 3