Bollettino valanghe

South Coast

Dec 5 – 6, 2014Avalanche Canada
Vedi sulla mappa
Archiviato · scaduto 12 years ago

Pericolo valanghe

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

In sintesi

A series of weather systems are forecast over the next few days. The heaviest precipitation is confined to the coast but we could see decent amounts trickle into inland areas.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–3
    Forecast snowfall amounts are only light but with moderate or strong winds we could see fresh wind slabs form in open lee terrain. The new snow may not bond well to the underlying snow surface.

Confidence

Poor - Freezing levels are uncertain

Weather Forecast

Tonight and Saturday: Cloudy with flurries, showers, or freezing rain. The freezing level is around 800-1000 m but we could see an above freezing layer (AFL) aloft. Ridge winds are moderate from the S-SW. Sunday: Probably a drier day. Freezing levels remain around 1000 m. Winds are moderate from the southwest. Monday: Cloudy with flurries or showers. The freezing level is around 1200 m with a possible AFL and winds are moderate from the S-SW.

Avalanche Summary

No new reports of avalanches. Please let us know what you're seeing out there at [email protected].

Snowpack Summary

Around 10 cm of new snow now covers the previous variable snow surface that consisted of facets (dry sugary snow) and surface hoar in sheltered areas, or pockets of old wind slab and an ice crust in open wind-exposed terrain (depending on aspect). Fresh new wind slabs may have formed in open north and east facing slopes, especially below ridges and behind terrain features in the alpine. A weak layer of facetted snow on a crust may be lurking deeper in the snowpack, but may be limited to slopes above treeline. There's limited recent info on this weakness so I recommend digging to confirm the existence of the layer, its depth, and to test its strength. Snow pack depth and snow quality drastically diminishes as you drop below treeline.

Regioni coperte