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Archived

Avalanche Forecast

Feb 9th, 2020–Feb 10th, 2020
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.

If the weather forecast is correct, we will see a quick warming trend in the morning. Skies may also be clear so keep an eye out for change.

Confidence

Moderate -

Weather Forecast

Tomorrow is expected to have a chilly start. -21 in the morning! There will be a rapid warming trend just before noon with a day time high of -9. No new snow and very light winds from the SW in the morning. The afternoon winds will pick up a bit with gusts to 34km/hr from the SW.

Avalanche Summary

Nothing new today.

Snowpack Summary

Moderate to strong winds last night made short work of the new snow. Lots of exposed ridges in the alpine which means there is some crossloading happening in the alpine and upper treeline. In sheltered areas the snow was still soft, yet slightly disturbed by the wind. Overall the midpack feels well settled and solid at treeline. There is a weak layer(dec31 surface hoar) down 50-80cm, but it seems well bonded. Last week's rain crust is down 20-25cm and obvious in all places below 1950m. So far no problems are associated with this crust.

Terrain and Travel

  • Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.

Avalanche Problems

Wind Slabs

Winds overnight will be variable so expect new slabs on almost all aspects. Buried slabs are on all easterly aspects and in many places there are multiple layers.

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

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1.5 - 2.5

Deep Persistent Slabs

Large triggers are a concern. Cornices, or other avalanches could wake this layer up. 

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 2 - 3.5