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Archived

Avalanche Forecast

Jan 2nd, 2018–Jan 3rd, 2018
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
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
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

Regions: Little Yoho.

Beautiful days to be in the mountains with good snow conditions and a generally stable snowpack. Climbers should be wary of steep gullies and in particular avoid sun exposed gullies this week. Thurs and Fri will be hot in sheltered areas.

Weather Forecast

The warm air has arrived and it at the higher elevations today and also for Wednesday. Expect clear skies and continued warming through the week, particularly on the eastern side of the park. Valley bottom high's will reach +1 by Friday. Thursday and Friday will be the warmest days of the week. Don't be fooled by cold temps in the valleys.

Snowpack Summary

The surface snow is a mix of soft powder and wind effect in alpine areas and 30cm of unconsolidated facets below 2000m where the Dec 15 surface hoar is also very prominent buried 40cm down - not an issue right now with no slab above it but watch for this in the future. The deeper snowpack has a few crust/facet layers but is generally strong.

Avalanche Summary

Saw lots of loose snow activity in steep rocky alpine areas today from the sunshine, but otherwise only small windslabs and loose snow avalanches in the past 48 hours.

Confidence

Avalanche Problems

Loose Dry

The cold temperatures have facetted the surface snow, and once initiated sluffs can pick up mass and travel far. Big sluffs are possible if you are climbing in gullies with steep terrain above, or skiing steep lines.
On steep slopes, pull over periodically or cut into a new line to manage sluffing.The volume of sluffing could knock you over; choose your climb carefully and belay when exposed.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2

Wind Slabs

Distribution is variable and their seems to be little pattern to their location. Not much of a problem but we have seen a few. Because of surface faceting they have the potential to run far.

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

Elevations: Alpine.

Likelihood: Unlikely - Possible

Expected Size: 1 - 2