Boletín de aludes

Kananaskis

Apr 6 – 7, 2017Alberta Parks
Ver en el mapa
Archivado · caducó 9 years ago

Peligro de aludes

Sat
Sun
Alta montaña
3 · Notable
Límite del bosque
3 · Notable
Bajo el límite
3 · Notable
Abrir el mapa completo

Lo esencial

No freeze is forecast overnight and light rain is expected.  Warm temps, rain and no freeze may all combine to wake up the basal weakness. 

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–2
    Expect to encounter these slabs along ridgelines and in crossloaded features in Alpine terrain. 

  • Loose Wet

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely - Very Likely
    Tamaño
    1–3
    No freeze is expected below 2400m over the next 24hrs.  Light rain is also forecast.  Loose wet slides may trigger deeper slabs failing on the basal facets.

  • Deep Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Unlikely - Possible
    Tamaño
    2–4
    We know it sounds like a broken record, but this deep layer is still a threat in any avalanche terrain that has not yet had extensive previous avalanching. While there is a lower probability of triggering, the consequences are high.

Confidence

Moderate - Freezing levels are uncertain on Friday

Weather Forecast

Not much of a freeze is expected overnight and the light rain (at lower elevations) and snow above 2300m is forecast to continue overnight and through the day on Friday.  Temps are forecast to climb above zero at 2500m so we may see the heat wake up some of the basal layers in areas that have not released.  Ski quality will not likely be all that great on friday and it may be worth taking a pass in many areas until we get a good freeze.

Avalanche Summary

No new slab avalanche activity was observed but there were numerous loose wet slides up to sz 1.

Snowpack Summary

Rain up to 2300m on Thursday with light flurries above this elevation. There was a very minimal freeze overnight on Wednesday and as a result, the top 10-20cm of the snow is wet. Above 2300m there is a widespread crust on solar aspects up to 2600m. Northern aspects are still holding dry snow but we have certainly transitioned into the time wherein if you want dry snow, you must be on a true north aspect. The windslabs seem to be only found in isolated alpine areas but we are still getting moderate sudden collapse sheers in the basal facets down 150-180cm. Pin wheeling was observed on all aspects up to 2500m so ski quality is taking a turn for the worse.

Regiones cubiertas