Bulletin d’avalanche

Kananaskis

Jan 11 – 12, 2018Alberta Parks
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Archivé · expiré 9 years ago

Danger d’avalanche

Sat
Sun
Alpin
3 · Marqué
Limite forestière
2 · Modéré
Sous la limite
1 · Faible
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Points saillants

The new snow is freshened up the region but the persistent surface hoar layers are taking more load and getting more reactive.  When the winds come...pull back!

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–3
    Look for these as you transition to alpine terrain and/or as you approach ridge tops.  As winds increase they will become more widespread. 

  • Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–3
    A surface hoar and facet layer down 50-70cm is beginning to wake up with the recent new snow.

  • Loose Dry

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely - Very Likely
    Taille
    1–2
    Running far and fast up to sz 2.  From steep unskiable areas.  Ice climbers be aware

Avalanche Summary

A few new slabs within the recent storm snow up to sz 2.  There were also a few loose dry up to sz 2.  The SE face of Smuts also ran up to sz 2 from 2800m. 

Confidence

High -

Weather Forecast

Winds will slowly increase here out of the NW into the moderate range over the next 24hrs.  Temperatures will increase to a more seasonal level on friday and no new snow is forecast. 

Snowpack Summary

Another 13cm overnight brings our recent storm snow up to 30-40cm over the past 2 days.  This new snow has yet to see much wind affect but it is continuing to bury two key layers.  One the Dec interface down 70cm which is facets or surface hoar (below 2300m) and the Jan 6th Surface down 30 which is surface haor below 2300m or a sun crust on steep solar aspects up to 2600m.  As the snow settles and strengthens over these layers they will become more reactive.  Whumpfing and settlements were being observed on thursday so treat that as a heads up.  Otherwise, wind slabs are still being observered in alpine areas on all aspects but as of yet they don't extend far downslope.  As the winds increase, expect all of these problems to become more reactive at treeline and in the alpine.

Régions couvertes