Bollettino valanghe

Northwest Inland

Apr 6 – 7, 2017Avalanche Canada
Vedi sulla mappa
Archiviato · scaduto 9 years ago

Pericolo valanghe

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

In sintesi

Most slabs avalanches in the past week have been triggered by cornices. Be cautious in wind affected terrain.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–2
    Strong winds and light amounts of snow have likely left wind slabs in the lee of exposed terrain.

  • Cornices

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    2
    Cornices have been growing and may fall off naturally with daytime warming.

Confidence

Moderate - Due to the number and quality of field observations

Weather Forecast

FRIDAY: Cloudy with isolated flurries, strong southeast wind, freezing level up to 1500 m after an overnight freeze.SATURDAY: 5-10 cm of new snow, light southeast wind, freezing level around 1400 m.SUNDAY: Mostly cloudy, moderate south wind, freezing level around 1300 m.

Avalanche Summary

Several thin wind slabs were reported in northerly terrain in the Howsons on Wednesday. A few cornice triggered slabs have been reported throughout the region over the past week (up to size 2.5).

Snowpack Summary

Strong winds with light amounts of snow formed fresh wind slabs in exposed terrain on Wednesday. Elevations below about 1300 m are experiencing a daily melt-freeze cycle. Hard crusts form overnight and become moist during the heat of the day. Hard crusts may be found at higher elevations, particularly on slopes that were sun-exposed. The February crust and facet layer is 70-90 cm deep in the Houston Telkwas sled area and a deep persistent faceted weak layer is still lingering near the bottom of the snowpack in all areas.

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