Bulletin d’avalanche

Kootenay Boundary

Nov 23 – 24, 2013Avalanche Canada
Voir sur la carte
Archivé · expiré 13 years ago

Danger d’avalanche

Mon
Tue
Alpin
2 · Modéré
Limite forestière
1 · Faible
Sous la limite
1 · Faible
Ouvrir la carte complète

Points saillants

This forecast is based on limited field data. Feel free to send any observations to [email protected].

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    1–4
    Wind slabs may be lingering on lee features in the alpine. Wind slab avalanches could have the potential step down to the deeper rain crust and produce larger avalanches.

  • Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    3–5
    Reports indicate that a widespread crust exits near the base of the snowpack . Where this crust is smooth or is overlayed by facets this layer might be able to produce large avalanches.

  • Loose Wet

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–2
    Rocks and trees poking through the thin snowpack will warm in the sun weakening the snowpack around them as temperatures rise.

Confidence

Poor - Due to the number of field observations on Saturday

Weather Forecast

A high pressure ridge is now entrenched across the interior of the province, bringing dry conditions, light north winds and a temperature inversion. In the Kootenays this inversion will be strong enough to drive temperatures above freezing in the alpine.Sunday: Mainly clear skies, no precipitation, moderate winds from the north-west, freezing levels range between 1700 and 2000m.Monday: Mainly clear skies, no precipitation, moderate winds from the west, freezing levels dropping to between 1500 and 1800mTuesday: Partly cloudy, no precipitation, light winds from the south-west, freezing levels rising to between 1700 and 1900m

Avalanche Summary

We've received reports of small lose snow avalanche releasing on steep sunny aspects in the alpine as the temperatures warm.

Snowpack Summary

Between 80 to 100cm of snow can be found at treeline although observations are limited and this amount may vary dramatically across the region.Warm temperatures are encouraging storm snows from earlier in the week to settle and bonding to the underlying thin, early season snow pack.Roughly 60 to 70cm of snow is now sitting on a widespread crust from mid November with a second crust sitting just above the ground.

Régions couvertes