Bollettino valanghe

Purcells

Apr 7 – 8, 2019Avalanche Canada
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Archiviato · scaduto 7 years ago

Pericolo valanghe

Tue
Wed
Alta quota
2 · Moderato
Limite del bosco
1 · Debole
Sotto il limite
1 · Debole

In sintesi

Wind slabs may be reactive to human triggering at upper elevations.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–1.5
    Up to 20 cm of recent storm snow has been redistributed by strong southwest winds. Wind slabs have formed in lee areas in the alpine and at treeline.

Confidence

Moderate -

Weather Forecast

SUNDAY NIGHT - Cloudy with scattered flurries / southwest winds, 10-25 km/h / alpine low temperature near -5MONDAY - Cloudy with isolated flurries / southeast winds, 10-25 km/h / alpine high temperature near -2 / freezing level 1900 mTUESDAY - A mix of sun and cloud with scattered flurries, up to 5 cm / northwest winds, 10-25 km/h / alpine high temperature near -2 / freezing level 2000 mWEDNESDAY - Cloudy with sunny periods and scattered flurries, 5 cm / west winds, 10-15 km/h / alpine high temperature near -2 / freezing level 1800 m

Avalanche Summary

On Saturday, there were a few reports of natural and human triggered wind slab avalanches, mainly in the alpine on north and east facing slopes.On Thursday, there were a few reports of natural and human triggered storm and wind slab avalanches in the alpine, as well as a few human triggered loose wet avalanches.

Snowpack Summary

10-20 cm of recent storm snow sits on a melt-freeze crust on all aspects except for north slopes above 2000 m, where it sits on dry snow. Recent snowfall amounts taper quickly below treeline.The base of the snowpack is composed of sugary faceted snow. The likelihood of triggering an avalanche on this layer is lower during colder periods and elevated during intense warming.Snow is disappearing rapidly at lower elevations.

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