Jasper

The persistent slab remains a concern and has potential to produce large avalanches. Use cautious route-finding and conservative terrain selection to manage this problem.

Wind slabs are reactive to human triggers and may initiate the persistent slab.

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. 

Cloudy with sunny periods and isolated flurries bringing a trace of new snow.

Alpine temperature -13 °C with light ridge wind to 15 km/h.

Cloudy with sunny periods and isolated flurries.

Alpine Low -18 °C, High -12 °C with Light ridge wind.

Cloudy with no snow expected. Alpine Low -15 °C, High -4 °C.

Ridge wind southwest: 10 km/h. Freezing level will rise to 1600 metres.

• 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.