Backcountry Advisory 

As of Wednesday, Jan. 3

Alpine: Considerable

Treeline: Moderate

Below Treeline: Moderate

Travel Advisory: The New Year has brought us 100cm of snowfall. Unfortunately yesterday’s storm was accompanied by mountaintop winds at times averaging 100 and gusting to 150 km/h from the Southeast and Southerly directions. Freezing levels spiked during the day leaving us with a melt-freeze crust buried beneath last night’s snowfall that is making for rather challenging ski conditions today. In some wind exposed areas this crust lays exposed on the surface.

Avalanche Activity: Stability testing this morning produced some soft slab avalanches with crown lines varying from 10-50 cm in depth, with reports of a few pockets to 100 cm in depth. A widespread natural avalanche cycle occurred at all elevations yesterday varying from size 1.0 to size 3.0 with crown lines up to a metre in depth. Overnight cooling has tightened in the storm snow layers with no natural avalanche activity observed this morning.

Snowpack: Generally moderate shears were observed this morning within the upper layers of the storm snow. Caution is advised as a surface slab in motion has the potential to trigger a deeper release in some unsupported wind loaded slopes in the high alpine.

Weather: A weak ridge of high pressure will bring us a mix of sun and cloud today. Another series of systems is expected arrive in our region on Friday and continue at least through the weekend and possibly into the early part of next week. Freezing levels are expected to remain at or near the valley bottom.

Conditions may vary and can change rapidly. Check for the most current conditions before heading out into the backcountry. Daily updates for the areas adjacent to Whistler/Blackcomb are available at 604-938-7676, or at surf to www.whistler-blackcomb.com/weather where there is also a link to the CAA public avalanche bulletin, or call 1-800-667-1105

Whistler Mtn. Snow Safety

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