Jasper

The persistent slab remains a concern and has potential to produce large avalanches. Avoid thin, rocky terrain where this problem is easiest to trigger.

Fresh wind slabs are reactive to triggers, avoid wind loaded features.

The best riding will be found in sheltered areas where wind hasn't disturbed the snow.

Moderate

• We are confident that there are persistent slabs in the snowpack, but uncertain about how likely they are to trigger.

Avalanche control at Parker Ridge on Thursday produced wind slabs up to size 2.

Strong winds have scoured fetches and formed wind slabs on leeward features. A persistent weak layer of surface hoar and facets from January 24 is buried 20-80 cm. A number of natural avalanches that have failed on this layer in the past week. Below, the snowpack is generally well consolidated facets to ground.

Icefields snow depths range from 130-200 cm and snow depth in the Maligne area ranges from 60-140 cm. 

Friday

Cloudy with sunny periods and isolated flurries. Alpine high -12 °C. Ridge wind West 10-25 km/h.

A mix of sun and cloud with isolated flurries. Low -16 °C, High -14 °C. Ridge wind Northwest 10-25 km/h.

Cloudy with sunny periods and isolated flurries. Low -18 °C, High -14 °C. Ridge wind Southwest 15-30 km/h.

• Look for signs of instability: whumphing, hollow sounds, shooting cracks, and recent avalanches.
• Avoid steep, rocky, and wind-affected areas where triggering slabs is more likely.