Bollettino valanghe

Yukon

Dec 26 – 27, 2022Avalanche Canada
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Archiviato · scaduto 4 years ago

Pericolo valanghe

Wed
Thu
Alta quota
3 · Marcato
Limite del bosco
2 · Moderato
Sotto il limite
Senza grado

In sintesi

Observations have been very limited but wind slabs are expected to be reactive and extra caution is recommended in wind-exposed terrain.

If you're out in the mountains, please consider submitting a MIN and let us know what you're seeing.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible - Likely
    Dimensione
    1–2

    Wind slabs should be anticipated on all aspects in exposed terrain due to recent variable winds with ongoing light snow accumulations. The possibility of strong winds means that wind slabs could be found further down slopes than typically expected.

Confidence

Low

Avalanche Summary

No new avalanches have been reported recently but observations have been very limited.

Continue to support your backcountry community and please consider submitting a MIN report.

Snowpack Summary

Variable winds over the past few days may have formed new wind slabs on all aspects. A variety of surfaces can be found in the alpine including new wind slabs, old hard slabs, wind scouring, a crust, and even exposed ground. In areas that are protected from the wind, up to 20 cm of low-density faceted snow can be found at the surface.

The height of the snowpack is variable. In areas lee of the prevailing wind, depths of up to 150 cm can be found. At the lower elevation treeline terrain, snow depths decrease and are estimated at 60-90 cm.

Weather Summary

A weak storm system is expected to impact the region Sunday night into Monday.

Sunday night

Snowfall 5-15 cm, moderate to strong SE-S wind, treeline low around -16 °C.

Monday

Snowfall 4-8 cm, moderate to strong SE-S wind, treeline high around -12 °C.

Tuesday

Mainly cloudy with lingering flurries in the morning and a chance of sunny breaks in the afternoon, moderate S wind, treeline high around -10 °C.

Wednesday

Mainly cloudy with a chance of sunny breaks, light to moderate SW wind, treeline high around -10 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
  • Use ridges or ribs to avoid areas of wind loaded snow.
  • Recent wind has varied in direction so watch for wind slabs on all aspects.

Regioni coperte