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Archived

Avalanche Forecast

Jan 26th, 2018–Jan 27th, 2018
Alpine
4: High
The avalanche danger rating in the alpine will be high
Treeline
4: High
The avalanche danger rating at treeline will be high
Below Treeline
3: Considerable
The avalanche danger rating below treeline will be considerable
Alpine
4: High
The avalanche danger rating in the alpine will be high
Treeline
4: High
The avalanche danger rating at treeline will be high
Below Treeline
4: High
The avalanche danger rating below treeline will be high
Alpine
4: High
The avalanche danger rating in the alpine will be high
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: South Coast.

Natural avalanche cycle expected at treeline and above. Travel in avalanche terrain not recommended.

Confidence

Moderate - Forecast snowfall amounts are uncertain on Saturday

Weather Forecast

SATURDAY: 20-30 cm of new snow / Strong southwesterly ridgetop winds / Freezing level rising to around 1200m.SUNDAY: 40-60 mm of rain / Strong southwesterly ridgetop winds / Freezing level rapidly rising to around 1800m.MONDAY: 40-60 mm of rain / Strong to extreme southwesterly ridgetop winds / Freezing level around 1800m.

Avalanche Summary

No new avalanches have been reported in this region on Thursday. However, a natural avalanche cycle is expected to begin Saturday with the incoming storm.

Snowpack Summary

25-35cm of new snow is being redistributed by moderate southerly ridgetop winds. The reactivity of the new storm slabs is likely to vary greatly depending on elevation/ temperature and orientation to wind. In general, I would expect the touchiest conditions to exist in exposed, higher elevation terrain.

Avalanche Problems

Storm Slabs

New snow, strong winds, and rising temperatures will create fresh storm slabs reactive human triggers
Avoid all avalanche terrain during periods of heavy loading from new snow, wind, or rain.The new snow will need time to settle and stabilize.Be alert to conditions that change with elevation and time of day.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Very Likely

Expected Size: 1 - 2

Cornices

Large amounts of recent new snow and high winds are creating rapid cornice growth.
Give cornices a wide berth when travelling on or below ridges.Falling cornices may trigger large avalanches on the slopes below.

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

Elevations: Alpine, Treeline.

Likelihood: Likely

Expected Size: 1 - 2.5