Bollettino valanghe

Jasper

Jan 23 – 24, 2018Parks Canada
Vedi sulla mappa
Archiviato · scaduto 9 years ago

Pericolo valanghe

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

In sintesi

Recent storm snow has made for good skiing at and above treeline in sheltered locations.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely - Possible
    Dimensione
    1–2
    Small inputs of fresh storm snow with southwesterly winds continue to build small lenses of windslab in sheltered lee features.

  • Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–2.5
    Well preserved surface hoar has been found in several treeline locations in the Icefields area. Shear tests were easy failures 35cm deep on this layer.

  • Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely - Possible
    Dimensione
    1–2.5
    This layer is primarily weak facets and had easy failures at treeline in test profiles today down 40 to 50cm.

Confidence

Due to the number of field observations on Monday

Weather Forecast

A strong SW flow with a series of low pressure storm cells tracking west from BC will give unsettled weather with light snow until later in the week. Tuesday: Cloudy with sunny periods/isolated flurries. Precip: 4cm. Alpine Low -13°C, High -8°C. Ridge wind moderate SW. Wednesday: Snow flurries, 9cm. Alpine temp: Low -8°C, High -4°C.

Snowpack Summary

Small  amounts of new snow this week continue to add windslab above treeline. Early January surface hoar down 35cm, mid December facets down 50cm, and basal facets 20cm above ground are the main weak layers in the snowpack. Field teams had easy shear failures today on a SE open slope at treeline in the Icefields area down both 35cm and 50cm.

Avalanche Summary

Limited visibility with no new notable avalanche observations.

Regioni coperte