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Archived

Avalanche Forecast

Mar 10th, 2022–Mar 11th, 2022
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
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
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

Regions: Kananaskis.

Tomorrow will have increasing winds at all elevations. Watch for fresh wind loading. 

Confidence

Moderate -

Weather Forecast

Another cold start for tomorrow. The overnight low will be -18, with a high of -8. Skies will be partly cloudy with westerly winds increasing throughout the day. Flurries are expected to start late in the day as well.

Avalanche Summary

Nothing new today.

Snowpack Summary

Today's trip took us to the northern section of the Spray. Light alpine winds have formed thin wind slabs on all aspects. These seem reasonably well bonded, but in shallow areas they are more reactive. Treeline and below still feel quite settled with only localized windslabs being a problem. The crust is still the main concern and deserves respect as there are likely loose sugary facets on top of it. Solar aspects at all elevations should be evaluated. It is down 30-40cm now.

Terrain and Travel

  • Be aware of highly variable recent wind loading patterns.
  • Be alert to conditions that change with elevation and wind exposure.
  • Wind slabs may be poorly bonded to the underlying crust.
  • Minimize exposure to sun-exposed slopes when the solar radiation is strong.

Avalanche Problems

Wind Slabs

These will build quickly with the increasing winds tomorrow.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Likely

Expected Size: 1.5 - 2.5

Persistent Slabs

Carefully evaluate the bond with the Feb 19th crust down 40 to 60cm. Recent wind loading will make this problem more reactive, as will periods of intense solar input.

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

Elevations: Alpine, Treeline.

Likelihood: Likely

Expected Size: 1.5 - 2.5