Bollettino valanghe

Waterton Lakes

Dec 20 – 23, 2018Parks Canada
Vedi sulla mappa
Archiviato · scaduto 8 years ago

Pericolo valanghe

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

In sintesi

An additional 20-30cm of snow has fallen, and more is forecast for Thursday. Choose conservative terrain and evaluate the lower layers in the snowpack carefully.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible - Likely
    Dimensione
    1–2
    New windslabs have formed with 20-30cm of new snow along the divide. Continued snow and wind Thursday night will continue to build slabs.

  • Deep Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1.5–2.5
    New snow has increase the load on deep weak layers. This loading is likely to continue on Thursday Night with continued snowfall, increasing the potential for human triggering.

Weather Forecast

Thursday: 15cm of snow along the divide with moderate to strong windsFriday: Mainly cloudy with scattered flurries and cooling temperatures down to -15 overnight. Winds moderate gusting strong.Saturday: Mainly cloudy with isolated flurries.

Snowpack Summary

The snowpack in Waterton is highly variable, but you can count on a weaker structure along the divide where another 20-30cm of recent storm snow on Tuesday has formed windslabs on lee slopes which are sitting on a weak snowpack consisting of old windslabs, facets and crusts.

Avalanche Summary

As of Wednesday morning, one size 2 skier accidental was reported on Monday running on the basal facets.

Confidence

Forecast snowfall amounts are uncertain on Thursday

Regioni coperte