Avalanche Forecast
Issued: Dec 27th, 2017 9:40AM
The alpine rating is Wind Slabs and Storm Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeSummary
Confidence
Moderate - Uncertainty of incoming precipitation totals and freezing levels.
Travel/Terrain Advice
Be observant of storm snow totals and avoid recently wind loaded slopes and rollovers in the alpine and at treeline. Conditions will be more dangerous during the peak of the storm and will take some time to settle down. Keep an eye on rising freezing levels which will contribute to greater instability of the upper snow pack. Watch and listen for signs of instability such as shooting cracks or whumpfing. Test low consequence slopes and rolls and take note of the aspect, elevation and terrain characteristics.
Past Weather
Continued cold temperatures and light winds have dominated the story lately. Several weak disturbances have pushed through and delivered a small amount of snow accumulation to the Island mountains.
Avalanche Summary
No avalanches observed.
Snowpack Description
Surface - Highly variable surface conditions exist at all elevations. A recent dusting now covers the old surfaces which includes the dominant December inversion crust and is showing signs of bonding moderately well. Upper - Variable dependent on aspect and elevation. Some surface hoar has been observed in protected areas at treeline and below which is now buried by the recent snow. Mid - Well settled. Lower - Well settled.
Weather Forecast
A series of warm fronts will bring precipitation and a warming trend to Vancouver Island for the next few days. A weak system on Wednesday followed by a stronger warm front on Thursday will provide snow at higher elevations as the freezing levels rise. There will be a possibility of freezing rain in some elevation bands. Wed - 8-18 cm of snow with the southern region seeing higher totals. Winds 30-15 km/h southwest. Freezing levels of 300-1400 m. Higher freezing levels in the north. Thu - 14-23 cm of snow at higher elevations. Winds light southwest veering to light southeast. 14-32 km/h. Freezing levels of 440-1400 m. Fri - 3-10 cm of snow above 1000 m. Winds southwest 12-23 km/h. Variable in the afternoon. Freezing levels of 500-1250 m.
Problems
Wind Slabs
Aspects: North, North East, East.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Storm Slabs
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Dec 29th, 2017 6:00PM