Bollettino valanghe

Northwest Coastal

Jan 8 – 9, 2016Avalanche Canada
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Archiviato · scaduto 11 years ago

Pericolo valanghe

Sun
Mon
Alta quota
2 · Moderato
Limite del bosco
2 · Moderato
Sotto il limite
1 · Debole

In sintesi

Outflow winds have created highly variable snow conditions in the region. Search for sheltered slopes for the best snow and to avoid wind slab concerns.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–3
    It may be possible to trigger stiff or hard wind slabs in exposed wind affected terrain. Stay tuned-in to signs of wind loading and loading patterns.

Confidence

Moderate - Wind effect is extremely variable

Weather Forecast

Saturday: Cloudy with sunny breaks and a chance of flurries. Treeline temperatures should reach -1 C during the day. Winds will be variable with some areas experiencing strong outflow (E-NE) winds. Sunday: Mainly cloudy. Treeline temperatures could pop a little above freezing during the day. Ridge winds are moderate from the SW-SE. Monday: Cloudy with light to moderate snowfall. Treeline temperatures are near 0 C again. Winds are moderate to strong from the SW.

Avalanche Summary

No new avalanche activity has been reported.

Snowpack Summary

The snow surface is highly variable. 25-40 cm of dry faceted snow can be found on most sheltered slopes, with a layer of new surface hoar above on slopes not affected by wind and sun. A melt-freeze crust can be found at or near the surface on steep, solar aspects in the alpine. Expect a variety of wind affected surfaces in exposed terrain. Wind slabs may be reactive to the weight of a rider, especially in areas where a slab overlies surface hoar buried by the Boxing Day storm. Professionals in the region are still tracking a few other surface hoar layers that developed throughout December which are now buried in the top 100cm. These layers have likely gained significant strength, and represent a low probability / higher consequence scenario at treeline and below treeline elevations. In colder and shallower snowpack areas watch for weak basal facets.

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