Bollettino valanghe

Northwest Coastal

Apr 8 – 9, 2012Avalanche Canada
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Archiviato · scaduto 14 years ago

Pericolo valanghe

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

Problemi valanghivi

  • Cornices

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–5
    Large and weak cornices are a hazard in themselves and can also act as a heavy trigger for very large avalanches on the slope below.

  • Loose Wet

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible - Likely
    Dimensione
    1–5
    Loose wet avalanches are most likely on steep slopes that are being heated by sun or warm temperatures. They can push you around, entrain mass and become dangerously large.

  • Wet Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–7
    Glide slabs can be unpredictable. Avoid traveling on or underneath any slopes with glide cracks.

Confidence

Fair - Timing, track, or intensity of incoming weather is uncertain

Weather Forecast

Monday: Some clouds developing. Freezing level around 1500 m. Light southerly winds. Tuesday: Light precipitation. Freezing level around 1500 m.Wednesday: Light to moderate precipitation. Freezing level rising to around 1800 m.

Avalanche Summary

Recent reports include wet loose avalanches up to size 2.5 in response to direct sun exposure. Cornices have also been failing over the past few days, some of which triggered wind slab avalanches up to size 2 on the slope below. Large glide avalanche activity also continued. On Saturday, a size 3 glide release removed trees and left a 4-5 m deposit near Shames. Glide slabs can be unpredictable. Any slopes sporting glide cracks are best avoided.

Snowpack Summary

The snow surface consists of a sun crust on solar aspects and at low elevations (becoming moist during the day), surface hoar on shady slopes up into the alpine, and dry settling or faceting snow on high north aspects. Pockets of wind slab are likely in exposed leeward alpine terrain. Sheltered shady slopes may be harboring buried surface hoar and/or preserved old storm snow from last week, which isn't as stable. Daytime warming or sun-exposure may cause surface snow to lose cohesion and cornices to weaken. Glide cracks have opened up, especially on steep rocky terrain features.

Regioni coperte