Avalanche Forecast

Moderate - Timing, track, or intensity of incoming weather system is uncertain on Wednesday

SUNDAY NIGHT - Mainly cloudy with scattered flurries / southwest winds, 15-35 km/h / alpine low temperature near -10MONDAY - Cloudy with sunny periods / west winds, 20-25 km/h / alpine high temperature near -10TUESDAY - A mix of sun and cloud with isolated flurries / southeast winds, 15-20 km/h / alpine high temperature near -5 WEDNESDAY - Snow, up to 20 cm / southeast winds, 20-40 km/h / alpine high temperature near -2 / freezing level 1000 m

On Sunday, numerous explosives triggered avalanches up to size 2 were reported in the region. Many of these were cornice failures.On Saturday, numerous natural avalanches to size 3 and explosives triggered avalanches to size 2.5, and one size 1 human triggered avalanche were reported in the region. On Friday, numerous explosives triggered avalanches to size 3 and one human triggered size 1.5 were reported. A group also reportedly remotely triggered a storm slab 20 m away with a 80-100 m crown.A widespread natural avalanche cycle up to size 3, and human triggered avalanches to size 2 were reported in the region on Thursday.

The Sea to Sky region has received approximately 100-140 cm of recent storm snow with strong to extreme southerly winds. Cornices are growing and slab formation is likely widespread.At treeline and below, the storm snow sits on two weak layers that are down 80-100 cm and 150-200 cm. These layers consist of surface hoar (feathery crystals) in more sheltered areas and a crust on solar aspects and on all aspects below 1500m.In the lower snowpack, a weak layer of facets (sugary snow) is now over 200 cm deep. There have been no reports of avalanches on this layer for over a week, but it may still be reactive to heavy loads (such as a cornice fall) in isolated areas.