Bollettino valanghe

Kootenay Boundary

Feb 25 – 26, 2015Avalanche Canada
Vedi sulla mappa
Archiviato · scaduto 12 years ago

Pericolo valanghe

Fri
Sat
Alta quota
1 · Debole
Limite del bosco
1 · Debole
Sotto il limite
1 · Debole
Apri la mappa completa

In sintesi

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Problemi valanghivi

  • Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely
    Dimensione
    3–6
    While unlikely to be human triggered, it's important to be aware that there are still deeply buried weak layers in the snowpack.  Cornice fall, significant warming, or a breakdown of the thick supportive surface crust could re-activate this problem.

Confidence

Good

Weather Forecast

Thursday: Scattered cloud, no significant precipitation. Light variable winds at all elevations. Friday: Broken cloud, 0 to 4 cm of snow possible. Light variable winds at all elevations. Saturday: Few clouds, no significant precipitation. Light N winds at treeline, moderate N/NE winds at ridgetop.

Avalanche Summary

No new avalanche activity was reported on Tuesday.

Snowpack Summary

The most prominent feature in the snowpack is the upper crust. This robust crust is supportive all the way to ridge crest and is effectively "capping" the snowpack, keeping the weight of riders from interacting with any deeper weak layers. Surface hoar on this crust is a widespread phenomenon. On solar aspects the proud crust is on the surface, on shadier aspects there may be 5 - 20 cm of settled storm snow on it. There are still weak layers in the snowpack that we'll continue to monitor. The mid-January surface hoar layer is down about 100cm in the alpine and down around 50 to 60cm at treeline. The mid-December crust/facet/surface hoar weakness may persist in the mid to lower snowpack at higher elevations. Both these layers have gone dormant for the time being, we would likely need significant warming to re-activate them.

Regioni coperte