Bollettino valanghe

Jasper

Feb 24 – 25, 2014Parks Canada
Vedi sulla mappa
Archiviato · scaduto 13 years ago

Pericolo valanghe

Mon
Tue
Alta quota
2 · Moderato
Limite del bosco
2 · Moderato
Sotto il limite
1 · Debole
Apri la mappa completa

In sintesi

Human triggered avalanches remain possible on specific slopes such as steep convex shaped wind-loaded features. Skiing is good in sheltered locations. Watch for frostbite! It does not feel like it is warming up much even in the sun.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely - Possible
    Dimensione
    1–2
    Carefully evaluate ridgetop transitions where winds have buffed the surface into a slab. It rests on the suspect surface hoar-facet layer 30cm down. Valley bottom winds have created slab pockets in exposed locations below treeline.

  • Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely - Possible
    Dimensione
    1–3
    The persistent slab is intermixed with 2 main weaknesses that will not go away anytime soon, the decomposing surface hoar-facet layer and thick layer of basal facets-depth hoar. Its spatial variability makes it difficult to predict.

Weather Forecast

Next few days will be dry, sunny, and cold overnight temperatures into the low -20's. Expect some warming in the afternoons with the sun's energy. Winds will be light from Northwest shifting Southwest Tuesday and Wednesday. Maybe some flurries on Thursday.

Snowpack Summary

Approximately 30cm of windslab or softslab, depending on aspect and elevation, is overtop a combo facet-decomposing surface hoar layer. This is most prevalent treeline into the lower alpine elevations. Below tree line there is a supportive yet shallow mid-pack over facets-depth hoar. Alpine is a variety of layers but generally all well bridged.

Avalanche Summary

No new natural avalanches were observed or reported. Visibility was excellent.

Confidence

Regioni coperte