Jasper

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

Warm, wet weather will make a radical change to avalanche conditions. Danger ratings may be higher than forecast if rain and snow arrive earlier than expected.

Low

• We are uncertain due to the timing, track, and intensity of the incoming weather system.

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. 

Sunday will remain partly cloudy with below-freezing temperatures and isolated flurries while a low-pressure system tracks across BC. On Mondy, freezing levels will rise and rain will fall at lower elevations with 11cm of snow in the alpine. Tuesday, the storm will intensify, with heavier precipitation - 20cm of snow in the alpine - and freezing levels climbing to 2000m.

• 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.