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Monday December 11, 2017

This Bulletin Valid Until: Wednesday December 13th, 2017 @ 6 pm. 

 

DANGER RATINGS (Make sure you understand the danger level meanings)
 
Outlook Monday Tuesday Wednesday
AlpineLOWLOWLOW
TreelineLOWLOWLOW
Below TreelineLOWLOWLOW

 

Confidence: High - Continued stable weather pattern.

Main Concerns: (Avalanche problems)

Loose Wet -  Small loose wet avalanches are possible on steep sunny slopes in the alpine and treeline elevations, particularly in the afternoon.

Travel/Terrain Advice: Spring-like conditions continue to persist. Assess sunny slopes especially once the snow becomes moist or wet. Small loose wet avalanches have the potential for high consequences when travelling above cliffs or terrain traps. Watch for early season hazards such as exposed creeks, stumps, and tree wells especially below treeline.

Past Weather: Vancouver Island has seen a very stable weather pattern with little to no precipitation, light to moderate SE through SW winds and temperatures ranging from -5oC to +11oCFreezing levels have been above the highest of the peaks on the Island for the majority of the time.

Avalanche Summary: No new avalanches observed over the weekend. Skiing on steep unsupported features did not produce any result.

Snow Pack Description:  

Surface - Thin unsupportive sun crust on solar aspects at all elevation in the morning, becoming moist quickly. In shaded areas snow remains cold.

Upper - Well settled and bonding well to rain crusts that were formed and buried in November.

Mid - Well settled crust complex.

Lower - Well settled.

Weather Forecast: A short lived weak disturbance in the entrenched ridge of high pressure Tuesday and Wednesday will produce increased cloud cover and minimal precipitation, likely in the form of rain or wet flurries. Temperatures and freezing levels will remain high and winds will be light from southerly directions to calm. Continued temperature inversion with low level clouds and fog near the ocean.

Mon - A trace of precipitationWinds light to moderate SE

Freezing levels of 1800-3800 m

Tue - 0-3 mm of precipitation. Winds light to moderate SW                      

Freezing levels of 1450-2500 m

Wed - A trace of precipitation.  Winds light variable to calm                                          

Freezing levels of 570-3600 m

 

Prepared by Dan Goodwin

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