Avalanche Forecast

Issued: Mar 2nd, 2022 3:00PM

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

Avalanche Canada mkoppang, Avalanche Canada

Evaluate the bond of the new snow and the underlying surface as you travel. Solar aspects where the new snow is overlying a crust seem to be the places where the bond is the most reactive.

Summary

Confidence

High -

Weather Forecast

Another pulse of snow is expected to move into the region thursday throughout the day giving us another 10-12cm of snow, temperatures around -5C and light winds. As the week moves on though, we are back onto a cooling trend with temperatures returning to the minus teens....

Avalanche Summary

Numerous loose dry slides up to sz 1 have occurred in the past 24hrs. Some pulling out thin slabs at the base of the cliff bands that werent running far. Of note forecasters triggerred a sz 2.5 skier remote avalanche today on a SE facing ridge at 2500m in the Highwood pass area. The slab failed down 40cm on the recent melt freeze crust, was 200m wide and ran for 500m.  

Snowpack Summary

20-30cm of recent storm snow is beginning to settle under the influence of warm temperatures and light winds. Isolated windslabs are being found along ridgelines in the Alpine but these slabs do not extend far downslope. The recent snow is poorly bonded to the underlying melt freeze crust on isolated steep solar aspects and forecasters were able to remote trigger a SE facing bowl from a ridge at 2500m. Use caution if travelling on these solar aspects and check the bond with the new snow and the underlying crust.    

Terrain and Travel

  • Be alert to conditions that change with elevation and wind exposure.
  • Closely monitor how the new snow is bonding to the crust.
  • Wind slabs may be poorly bonded to the underlying crust.

Problems

Wind Slabs

An icon showing Wind Slabs

Strong SW winds are creating extensive fresh wind slabs in Alpine and Treeline terrain. These slabs will become increasing reactive with the incoming snow and continues strong winds.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Likely

Expected Size

1.5 - 2.5

Persistent Slabs

An icon showing Persistent Slabs

Carefully evaluate the bond of the new snow to the underlying crust. Steep solar aspects and unsupported terrain should be carefully considered or avoided...

Aspects: South East, South, South West, West.

Elevations: Alpine, Treeline.

Likelihood

Likely

Expected Size

1.5 - 2.5

Valid until: Mar 3rd, 2022 3:00PM