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Archived

Avalanche Forecast

Jan 22nd, 2020–Jan 23rd, 2020
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
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
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: Glacier.

Surface slabs in wind-effected areas (ridgeline, alpine lee zones) are the greatest concern today.

Tree-bombs will become a threat as temps rise and winds pick up; maybe don't linger under the large tree snow gnomes...

Weather Forecast

Warming temps over the next 3 days with increasing winds and up to 30cm of snow.

Today: Cloudy with sunny periods and isolated flurries. Light SW winds, fzl rising to 1200m by mid-afternoon.

Thurs: Snow, 10-15cm, moderate to gusty strong SW winds, fzl rising to 1700m, alpine high of -2*C

Fri: Snow, 10-15cm, mod to strong gusty SW winds, fzl 1800m.

Snowpack Summary

15-25cm of settling storm snow lies on previous wind effect and small facets from last weeks cold. Variable soft slab can be found in the alpine at ridge-tops and immediate lee areas. The mid-lower snowpack is generally well settled and strong. The Dec 27th surface hoar/crust down 100cm has not been reactive since the last major snowfall.

Avalanche Summary

Very little natural avalanche activity noted yesterday; the exception being a large sz 3.5 from Macdonald Gully 10. Suspect there has been an increase in natural activity overnight from steep alpine start zones (ie Macdonald and Tupper) due to S'ly winds and warmer temps.

Confidence

Avalanche Problems

Storm Slabs

Recent new snow overlies facetted and/or firm surfaces. Overnight SW'ly winds will have built up soft slabs in alpine lee and ridgeline features.

  • Use caution above cliffs and terrain traps where small avalanches may have severe consequences.
  • Be careful with wind loaded pockets, especially near ridge crests and roll-overs.

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

Elevations: All elevations.

Likelihood: Possible

Expected Size: 1 - 2.5