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Avalanche Forecast

Apr 1st, 2012–Apr 2nd, 2012
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
2: Moderate
The avalanche danger rating below treeline will be moderate
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

Fair - Intensity of incoming weather is uncertain on Tuesday

Weather Forecast

MONDAY: Light precipitation throughout the day with intensity increasing late afternoon into the evening. Freezing level 1100-1500m. Winds light to moderate from the south. TUESDAY: Moderate to heavy precipitation combined with moderate to strong southerly winds. Freezing level 1200-1500m. WEDNESDAY: Light precipitation with freezing levels lowering to 1000m.

Avalanche Summary

Reports of human triggered avalanches to size 1.5. These are isolated to the newly fallen snow.

Snowpack Summary

Up to 40cm of recent storm snow from the past 3 days combined with moderate winds have formed windslabs in the alpine continued to build already very large cornices. There is moist snow on all aspects below 1600 metres.

Avalanche Problems

Wind Slabs

Recent new snow and moderate southerly winds continue to build windslabs.

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

Elevations: Alpine, Treeline.

Likelihood: Likely

Expected Size: 1 - 5

Cornices

Recent snow and wind have have made large cornices even bigger and more sensitive.

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

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 3 - 7

Deep Persistent Slabs

Persistent weaknesses are buried about 150-200 cm below the surface. Avalanche activity on this interface has become less frequent, but large triggers like cornice fall may release a large avalanche.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Unlikely

Expected Size: 3 - 7