Bulletin d’avalanche

Northwest Inland

Dec 24 – 25, 2023Avalanche Canada
Voir sur la carte
Archivé · expiré 3 years ago

Danger d’avalanche

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

Points saillants

Approach ridgelines carefully, wind affected snow may still be reactive to human triggers.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–1.5

    Slabs are likely small but may continue to be reactive to human triggers.

  • Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2.5

    Buried surface hoar can be found 30-50 cm below the snow surface. It is reported to be deeper and more reactive in the western part of the region.

Confidence

Moderate

Avalanche Summary

No recent avalanches have been reported, we expect some natural avalanche activity may have occurred during the recent storm.

If you do go into the backcountry, consider submitting a Mountain Information Network report.

Snowpack Summary

10-20 cm of storm snow has fallen over previously wind-affected surfaces at higher elevations.

Lower elevations received mostly rain and are likely to have moist snow or a surface crust.

Two different surface hoar layers have been reported in the upper snowpack (up to 40 cm deep) and appear to be most prominent at treeline and below. Snowpack depths at treeline are 50 to 100 cm.

Weather Summary

Saturday Night

Partly cloudy with possible flurries, southerly winds 50 km/h. Freezing levels at valley bottom.

Sunday

Increasing cloud with easing southerly winds, 60 km/h. Possible flurries. Freezing levels remain around 500 m. Treeline temperatures near -7 °C.

Monday

Mostly cloudy with southerly winds, 60-90 km/h. Flurries deliver up to 3 cm. Freezing levels rise to 1000 m, treeline temperatures around -3 °C.

Tuesday

Cloudy, with southwest winds, 50 km/h. Freezing levels reach 1500 m with treeline temperatures around +1 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be careful with wind slabs, especially in steep, unsupported and/or convex terrain features.
  • Carefully assess open slopes and convex rolls where buried surface hoar may be preserved.

Régions couvertes