Bollettino valanghe

Jasper

Dec 14 – 15, 2014Parks Canada
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Archiviato · scaduto 12 years ago

Pericolo valanghe

Sun
Mon
Alta quota
3 · Marcato
Limite del bosco
2 · Moderato
Sotto il limite
2 · Moderato

In sintesi

Load is the word of the day. Look for loaded and cross-loaded areas. Don't overload the slope from shallow areas. Load your pack with food and water for a big day, and un-load your memory card and load it back up with blue-bird pictures!

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible - Likely
    Dimensione
    1–3
    Loaded, cross-loaded and re-loaded lee features still producing touchy slabs.
  • Deep Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible - Likely
    Dimensione
    1–3
    Deep persistent slabs at treeline and sheltered sub-alpine slopes still reactive from shallow areas within the snowpack.

Weather Forecast

Outstanding cool day expected in the forecast area. Temperatures expected to start down in the minus mid-teens in the morning and warm to cool single digits over the day. Light variable winds shifting north to south over the day. Comfortable day to be digging in the snow looking for crusts.

Snowpack Summary

A steady cooling trend overnight and over the day tightening up the storm instability. Touchy conditions still exist in isolated areas at tree line and sub alpine elevations in cross-loaded and lee features. The facet crust layers near the base of the snowpack are the most susceptible to human triggering especially from shallow areas.

Avalanche Summary

Previous activity offering interesting results on the November rain crust persistent weak layer. Long delays of a few minutes after an explosive detonation at Marmot Basin released a size 3 that ran much further than expected from a heavily loaded ridge top feature.

Confidence

Regioni coperte