Avalanche Forecast

Issued: Mar 22nd, 2024 4:00PM

The alpine rating is moderate, the treeline rating is low, and the below treeline rating is low. Known problems include Loose Dry, Persistent Slabs and Deep Persistent Slabs.

Avalanche Canada SH, Avalanche Canada


Watch for sluffing of the recent 10-30cm snow in very steep terrain. Although isolated in nature, the potential for slides on the deeper layers shouldn't be forgotten on high, shady aspects (see avalanche summary).

The ski quality has improved greatly over the past few days.




Avalanche Summary

An isolated size 3 event on Hidden Bowl in the Lake Louise backcountry. It was a remote in the alpine from 200m away while uptracking. See photo below. There have also been some recent natural sloughs out of very steep terrain (mainly size 1), sliding on the March 20th interface.

Snowpack Summary

Over the last few days, 10 to 30cm of mainly low-density snow has fallen. A parks group on the Wapta found a 10cm "wind skin" starting to form in the high alpine. This snow lies over the March 20 temperature crust, which extends to 2100 m on all aspects and ridge tops on solar aspects. The Feb 3rd crust layer is down ~ 50 -100 cm, and the basal facets persist in thin snowpack areas. Total snowpack depths range from 90-170 cm at treeline.

Weather Summary

Saturday: Valley bottom freezing levels, light winds, isolated flurries, and a mix of sun and cloud developing in the PM.

Sunday: 1500m freezing levels, light winds, and sunny skies.

Click here for more weather info.

Terrain and Travel Advice

  • Closely monitor how the new snow is bonding to the crust.


Loose Dry

An icon showing Loose Dry

20-30 cm of low-density storm snow (at upper elevations) will be prone to sluffing out of very steep terrain.

Aspects: All aspects.

Elevations: Alpine.



Expected Size

1 - 1.5

Persistent Slabs

An icon showing Persistent Slabs

The Feb 3 crust/facet interface is down 50-100 cm. Cooler temps have lessened the likelihood of triggering this layer, but a slide in Hidden Bowl today shows isolated events are possible.

Aspects: North, North East, East, North West.

Elevations: Alpine.


Unlikely - Possible

Expected Size

2 - 3

Deep Persistent Slabs

An icon showing Deep Persistent Slabs

Current cooler temperatures have reduced the likelihood of triggering this problem significantly, but isolated events are still possible, especially in thin snowpack areas.

Aspects: North, North East, East, North West.

Elevations: Alpine.


Unlikely - Possible

Expected Size

2 - 3.5

Valid until: Mar 23rd, 2024 4:00PM