Bollettino valanghe

South Coast Inland

Jan 27, 2018Avalanche Canada
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Archiviato · scaduto 9 years ago

Pericolo valanghe

Sun
Mon
Alta quota
3 · Marcato
Limite del bosco
3 · Marcato
Sotto il limite
2 · Moderato

In sintesi

New snow and wind continue to create touchy storm slabs reactive to human triggers, especially in wind effected areas at treeline and above.

Problemi valanghivi

  • Storm Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible - Likely
    Dimensione
    1–2
    New snow and wind continue to build storm slabs reactive to human triggers.

Confidence

Moderate - Timing, track, or intensity of incoming weather system is uncertain

Weather Forecast

SATURDAY: 10-20 cm of new snow / Moderate to strong southwesterly ridgetop winds / Freezing level rising to around 1000m.SUNDAY: 10-20 cm of new snow / Strong southwesterly ridgetop winds / Freezing level rapidly rising to around 1800m.MONDAY: 10-20 cm of new snow / Strong southwesterly ridgetop winds / Freezing level around 1800m.

Avalanche Summary

Two natural storm slab avalanches stepped-down to facets at the bottom of the snowpack and resulted in 3-3.5 avalanches. They occurred on north and south aspects between 2000 and 2250 m. The extended period of continuous loading of the snowpack may begin to reactivate deeply buried weak layers resulting in large and destructive avalanches running full path.

Snowpack Summary

15 cm of new snow on Friday morning brings recent storm totals to 70-100cm. Moderate southerly winds continue to redistribute the new snow. Last weekend's strong to extreme southeasterly ridgetop winds likely created dense storm slabs lurking in lee and cross-loaded features at treeline and above.90-120cm below the surface you'll likely find a few crusts that were buried during the first few weeks of January. Due to limited observations, not much is known about the current reactivity of these layers.The lower snowpack includes the mid-December crust layer. The load of the new snow may tip the balance and reactivate this layer in isolated terrain - particularly in the north of the region where it's shown prolonged reactivity in snowpack tests.

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