Bollettino valanghe

Waterton Lakes

Feb 23 – 26, 2016Parks Canada
Vedi sulla mappa
Archiviato · scaduto 11 years ago

Pericolo valanghe

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

In sintesi

Ski conditions at upper elevations have recovered dramatically since last week, don't let sunny skies and great skiing drive your decision making process.

Problemi valanghivi

  • Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely
    Dimensione
    1–3
    While mostly unlikely to trigger, buried layers of old windslab over a couple of buried crusts have the potential for wide propagation. Use a probe or a pole to check for the presence of these buried layers.

  • Storm Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible - Likely
    Dimensione
    1–2
    Fresh storm slabs remained touchy through the weekend. These can be managed readily with ski cutting in appropriately non-consequential terrain, but may be large enough to be destructive in bigger terrain features.

Weather Forecast

A ridge of high pressure is building over Western Canada that is forecast to bring settled weather through the week. Skies will be mostly clear, with light and variable ridge top winds, and freezing levels remaining near valley bottom.

Snowpack Summary

10-15cm new snow near the divide Friday night created touchy storm slabs. At treeline and in the alpine this covers the previous layers of stiff windslab over a couple of buried crusts, down as deep as 55cm and 70cm (widespread below 2200m and extending into the alpine on solar aspects). Below treeline is dust on crust over a strong snowpack.

Avalanche Summary

A few natural size 1.0-2.0 storm slab avalanches have been observed and reported over the weekend. Ski cutting on Saturday and Sunday easily produced size 1.0 storm slab avalanches in sufficiently steep terrain (it's easy to imagine that these would have been up to size 1.5 in larger terrain features)

Confidence

Regioni coperte