Bollettino valanghe

Kootenay Boundary

Nov 23 – 24, 2012Avalanche Canada
Vedi sulla mappa
Archiviato · scaduto 14 years ago

Pericolo valanghe

Sun
Mon
Alta quota
Senza grado
Limite del bosco
Senza grado
Sotto il limite
Senza grado
Apri la mappa completa

In sintesi

This bulletin is based on limited data. Local variations in conditions are likely to exist. Check out the Forecasters Blog for further details on interpreting early season bulletins.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely - Very Likely
    Dimensione
    1–5
    Winds slabs have formed on the lee side of slopes and ridges, and could stay touchy throughout the weekend.

  • Storm Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely - Very Likely
    Dimensione
    1–4
    Recent snowfall has continued to build storm slabs. They are likely touchy to rider triggers and may require a few days to settle out and start bonding to the upper snowpack.

Avalanche Summary

No new avalanches were reported. If you and your friends have been out exploring and riding in the backcountry, and have some observations to share please send an email to [email protected].

Confidence

Poor - Due to limited field observations for the entire period

Weather Forecast

A Pacific frontal system is moving through the interior regions Friday and extending into Saturday. This will bring strong ridgetop winds, and moderate amounts of snow, especially in upslope areas. After the front passes, a weak ridge of high pressure will push into the region bringing dryer, cooler, and clearing conditions that will last through the weekend. Freezing levels will stay in the valley bottom through the period.

Snowpack Summary

New storm snow will bury previously formed wind slabs, and continue to build storm slabs. An early November crust exists near the bottom of the snowpack, however there is no information leading me to think that it could act as a weak layer. Be aware of instability signs such as whumphing, which is a good indicator of a weak layer buried beneath and an unstable snowpack.  Snowpack depths on average are near 80 cm @1700 m, and near 100 cm at higher elevations. Below treeline may still be below threshold. Snowpack and conditions vary across the region, its important to be aware of YOUR local conditions.

Regioni coperte