Avalanche Forecast

Issued: Apr 1st, 2012 10:43AM

The alpine rating is considerable, the treeline rating is moderate, and the below treeline rating is moderate. Known problems include Wind Slabs, Cornices and Deep Persistent Slabs.

mbender, Avalanche Canada

Cariboos.

Summary

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.

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

Valid until: Apr 2nd, 2012 9:00AM