Bollettino valanghe

Vancouver Island

Dec 4 – 7, 2017VIAC
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Archiviato · scaduto 9 years ago

Pericolo valanghe

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

Problemi valanghivi

  • Loose Wet

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–3
  • Loose Wet

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Very Likely
    Dimensione
    1–3

Confidence

Moderate- no alpine snow pack observations and most obs limited to Eastern Central Vancouver Island

Travel/Terrain Advice

Remember to check that avalanche safety equipment is in proper working order and don't just jump right back into the GNAR. With early season conditions and forecasted warming numerous hazards like creeks, rock and stumps will become a real concern. Even small loose wet avalanches have the force to push one into terrain traps below. Avoid exposing yourself above terrain traps like depressions, cliffs, trees. Avoid exposure to large alpine avalanche paths in all elevation bands. Very large wet slab avalanches have the potential to reach into below tree line.

Past Weather

The eastern island has seen minimal precipitation, light winds and cool temperatures. Precipitation totals are slightly greater for western regions of the forecast area. Freezing levels across the forecast region have ranged from sea level to 1000 m.

Avalanche Summary

A few very small soft slab avalanches were observed Saturday morning in the freshly fallen snow, both by ski cut and natural triggering on SW-NE aspects at tree line. Skiing and sledding in steep unsupported terrain below and at tree line produced no results on Sunday on SW-NE aspects.

Snowpack Summary

Surface- New light snow 30-40 cm Upper- Numerous supportive rain crusts exist in the upper snow pack. Mid- Well settled Lower- Well settled.

Weather Forecast

Temperatures and freezing levels will take a dramatic jump up (potential freezing levels of up to 3600m) starting Tuesday with an approach of a large high pressure system. Mon- 0 cm to a trace of new snow. Winds light to mod NW Freezing level to 0-1200m. Tues- no new snow. Winds light NW switching to light SE Freezing level to 500-2700m Wed- No new snow. Winds light SE Freezing level to 1200-3600 m.

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