Avalog Join
Archived

Avalanche Forecast

Jan 24th, 2012–Jan 25th, 2012
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
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
3: Considerable
The avalanche danger rating below treeline will be considerable
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: Cariboos.

Confidence

Good - -1

Weather Forecast

Heavy precipitation on Tuesday should lighten to flurries by Wednesday mid-morning. Strong southwest winds are expected to continue until Wednesday evening, when the wind should clock to the northwest as a ridge of high pressure builds over the interior. The freezing level is expected to rise to near 1000 metres during the evening on Tuesday, and then drop back to valley bottoms. Thursday and Friday should be drier and cooler with alpine temperatures dropping to about -14.0

Avalanche Summary

Natural avalanches up to size 2.0 reported on east and southeast aspects in the alpine that released in the recent storm snow.

Snowpack Summary

The new storm has developed a thick blanket of dry light snow above the cold dry surface. If this new storm warms up a bit, expect a storm slab to consolidate above this cold relatively weak layer. Watch for new windslabs developing due to forecast strong southwest winds. Some surface facetting during the recent cold spell. Strong temperature gradient in the top 30 cm. Stiff windslabs have developed in the alpine and at treeline. Some areas reporting a crust that is now buried by about 50 cm of cold dry light snow. Strong well settled mid-pack. Cornice structures are weak and have been growing fast, and falling off!

Avalanche Problems

Wind Slabs

The new storm on Tuesday is expected to build new windslabs that are expected to be easily triggered by light loads like skiers or riders.

Aspects: North, North East, East.

Elevations: Alpine, Treeline.

Likelihood: Very Likely

Expected Size: 2 - 6

Storm Slabs

A storm slab is expected to develop due to strong southwest winds, heavy precipitation, and rising freezing levels.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Very Likely

Expected Size: 2 - 6