Bulletin d’avalanche

Yukon

Jan 18 – 19, 2023Avalanche Canada
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Archivé · expiré 4 years ago

Danger d’avalanche

Fri
Sat
Alpin
2 · Modéré
Limite forestière
1 · Faible
Sous la limite
Sans niveau

Points saillants

New wind slab formation is possible Tuesday overnight with a forecast for moderate to strong winds in the alpine. Continually assess conditions as you travel and use a cautious approach in wind-exposed terrain.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2

    Depending on the strength of the wind on Tuesday night, new wind slab formation is possible at higher elevations. Be sure to assess for changing conditions as you gain elevation, and use extra caution in leeward terrain features.

Avalanche Summary

No new avalanches have been reported over the past few days.

New wind slab formation is possible Tuesday overnight and may be reactive to human triggering on Wednesday.

Confidence

Moderate

Snowpack Summary

On Tuesday, the Avalanche Canada field team was reporting a rime crust on the surface and increasing wind speeds at the end of the day. If the wind speed continues to increase Tuesday night, new wind slab formation should be expected on Wednesday at higher elevations.

Snow depth at White Pass is around 100 cm in sheltered areas and up to 200 cm on wind-loaded slopes. Shallower snowpack areas (< 1 m) are reported to be quite facetted and loose.

Weather Summary

Tuesday night

Flurries up to around 5 cm, moderate to strong S wind, treeline low around 10 °C.

Wednesday

Mainly cloudy with sunny breaks and a chance of flurries, light to moderate SE-S winds, treeline high around -8 °C.

Wednesday night and Thursday

Mainly cloudy with light snowfall 5-10 cm, moderate to strong S-SW winds, treeline high around -4 °C.

Friday

Cloudy with light snowfall 5-10 cm, strong SE-S winds, treeline high around 0 °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.

Régions couvertes