Avalanche Forecast

Issued: Apr 2nd, 2024 4:00PM

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

Avalanche Canada BF, Avalanche Canada


There is uncertainty around how much precipitation will come in late Tues night.

The more new snow we receive, the more the hazard will increase.




Avalanche Summary

Sunshine reported a cornice failure today on an NW aspect size 2 as well as some wet loose size 1. No other avalanches were reported.

A size 2 slab was remotely triggered from 50m on April 1st in the Purple Bowl at Lake Louise. The slab was reported to be 60cm deep and 75m wide. This would be a northwest aspect at around 2500m and would be the skier's right of a similar event triggered on the February 3rd layer just over a week ago.

Snowpack Summary

Up to 20cm of storm snow is forecasted Tues night, this will overlie a variety of crusts up to ~2800m on solar aspects, and up to ~2300m on northerly aspects. In the high alpine, this will overlie settled and wind-affected snow

Our main concern for persistent layers is shallow snowpack areas on northerly alpine aspects where no crusts are found in the upper snowpack and the midpack is thinner/weaker. Triggering the Feb 3 facet/crust layer and basal depth hoar remains possible

Weather Summary

Tues night: Strong winds from the West, followed by precipitation up to 20cm. Temperatures will begin to fall.

Wednesday: Cloudy with sunny periods. Continued cooling, light ridge wind gusting up to 45km/h. Freezing level 1800m. Precip nil.

Thursday: Cloudy with sunny periods. High -5°C. Freezing level valley bottom.

Click here for more weather info.

Terrain and Travel Advice

  • Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
  • Loose avalanches may start small but they can grow and push you into dangerous terrain.
  • Avoid thin areas like rock outcroppings where you're most likely to trigger avalanches failing on deep weak layers.
  • Use caution on large alpine slopes, especially around thin areas that may propagate to deeper instabilities.


Wind Slabs

An icon showing Wind Slabs

Moderate to strong winds Tues night accompanied by new snow could create windslab down into the treeline.

Aspects: All aspects.

Elevations: Alpine, Treeline.


Possible - Likely

Expected Size

1 - 2

Loose Dry

An icon showing Loose Dry

New snow on top of some stiff crusts will increase the likelihood of dry loose and sluffing particularly out of steep terrain.

Aspects: All aspects.

Elevations: Alpine, Treeline.



Expected Size

1 - 1.5

Persistent Slabs

An icon showing Persistent Slabs

The Feb 3 crust/facet interface is down 60-110 cm. In shallow snowpack areas on northerly alpine aspects, this layer remains sensitive to skiers, with remote triggering observed in several instances. All the recent avalanches that initiated on this layer stepped down to the basal facets/ground

Aspects: North, North East, North West.

Elevations: Alpine.



Expected Size

2 - 3

Valid until: Apr 3rd, 2024 4:00PM