Avalanche Forecast

Saturday night: Cloudy with isolated flurries and a trace of new snow. Light south winds, increasing in the morning.

Sunday: Cloudy with light flurries bringing about 5 cm of new snow, easing overnight. Light to moderate south winds, possibly strong at ridgetop. Alpine high temperatures around -4 with freezing levels to 1400 metres.

Monday: Cloudy with scattered flurries bringing up to 5 cm of new snow. Light southwest winds. Alpine high temperatures around -5.

Tuesday: Cloudy with isolated flurries and a trace of new snow. Light south or southwest winds. Alpine high temperatures around -5.

Reports from Friday included more observations of recent avalanche activity as well as a several new ski cut storm slabs and wind slabs, with a trend toward smaller releases. (size 1-1.5). All aspects were represented in reports, with some emphasis on north through east aspects.

There were numerous reports over the past few days of natural and human triggered avalanches. Most of these were size 1-2 storm and wind slab avalanches. All aspects and elevations were represented in reports, with some emphasis on north aspects for higher elevation releases. Similar activity was likely throughout the day on Friday.

Looking forward, now that our recent snow has formed a more reliable bond with the old surface, areas of unstable snow should become increasingly limited to recently wind loaded pockets at higher elevations.

Regular snowfall over the past week brought about 40-80 cm of snow to the region, with the greatest accumulations focused heavily toward the Monashees. 

Elevated, mainly south winds over the same period redistributed much of this snow in the alpine and upper treeline. Warm temperatures promoted slab formation with each snowfall as well as fairly quick transitions to settlement and bonding of the new snow. Surface snow is now moist or wet from warm temperatures, wet flurries, or rain up to at least 1500 metres.

The layer of surface hoar we have been tracking since late December has gained considerable strength in recent days. It is now buried roughly 90-130 cm deep in the Selkirks and 120-160 cm deep in the Monashees and exists primarily at treeline and below treeline. It may still be triggerable by a large load in shallower snowpack areas.

A facet/crust layer from late November may still be found near the bottom of the snowpack. This layer has been triggered by explosives in thinner alpine start zones in the Selkirks, but not in several weeks.

• Avoid freshly wind loaded terrain features.
• Be alert to conditions that change with elevation, aspect and exposure to wind.