Bollettino valanghe

Kootenay Boundary

Apr 16 – 17, 2014Avalanche Canada
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Archiviato · scaduto 12 years ago

Pericolo valanghe

Fri
Sat
Alta quota
2 · Moderato
Limite del bosco
2 · Moderato
Sotto il limite
1 · Debole
Apri la mappa completa

In sintesi

This bulletin was created using very limited field data. If you are out in the mountains, please send your observations to [email protected]

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–2
    It may be possible to trigger fresh wind slabs in steep lee terrain, especially where the new snow overlies a hard crust.

  • Deep Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely - Possible
    Dimensione
    2–5
    Rain, warming, and periods of sun could be enough to wake up a deeply buried persistent weak layer and produce a very large avalanche. 

Confidence

Poor - Due to the number of field observations

Weather Forecast

Tonight and Thursday: Light to moderate snow or rain 5 cm tonight, 10 -15 cm/mm Thursday. The freezing level is around 1800 m. Winds are moderate from the South. Friday: Cloudy with flurries or showers. The freezing level is around 1600-1800 m. Winds are light to moderate from the West. Saturday: A mix of sun and cloud. The freezing level rises to 2200 m and ridge winds are light to moderate from the south.

Avalanche Summary

No new avalanches were reported on Tuesday. There was one report of a size 2.5 natural deep persistent slab in the Rossland Range that occurred on Sunday afternoon in response to strong solar radiation and warm temperatures. This avalanche released on a steep southeast aspect at around 2100 m and likely failed on the mid February weak layer. It's a good reminder of the potential for large deep avalanches under certain conditions.

Snowpack Summary

A trace of new snow sits on a thick and solid melt-freeze crust in most places. This crust has been breaking down on all aspects up to around 2000 m and above this elevation on solar aspects most days. The late January/early February persistent weak layer is deeply buried and has not produced avalanches in this region for some time now. Cornices are large in some areas and should be given a wide berth.

Regioni coperte