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Archived

Avalanche Forecast

Feb 16th, 2022–Feb 17th, 2022
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: Glacier.

Strong winds and new snow will elevate the avalanche hazard as the day progresses.

Melt-freeze crusts and old hard wind slabs may still make for challenging skiing and riding.

Weather Forecast

~10cm of new snow, moderate to strong winds, and mild temperatures are forecasted for Thursday. Continued light snow on Friday, then we should start to see more snow accumulating over the weekend. Saturday and Sunday are both forecasted to get 15cms of new snow as a mild low-pressure system comes from the NW.

Snowpack Summary

Wind slabs will develop Thursday morning with Strong SW winds and ~10cm of new snow. The new snow and strong winds will bury a new layer of SH in sheltered terrain, old hard wind slabs in the Alpine, and crusts on all aspects BTL and solar slopes into the Alpine. The Jan 29 SH layer, buried 50-80cm, seems to be rounding.

Avalanche Summary

No new avalanches have been observed in the highway corridor, or reported from the Backcountry.

Confidence

Timing, track, or intensity of incoming weather system is uncertain

Avalanche Problems

Wind Slabs

Wind slabs may develop through Thursday with strong winds and new snow. Wind slabs will bury a new layer of Surface Hoar in protected areas, old hard wind slabs in exposed terrain features in the Alpine and a melt-freeze crust BTL and solar aspects.

  • Use caution in lee areas. Recent wind loading has created wind slabs.
  • Wind slabs will be most reactive where they overlie surface hoar, and a hard bed surface or crust.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 2