Bollettino valanghe

Sea To Sky

Nov 29 – 30, 2017Avalanche Canada
Vedi sulla mappa
Archiviato · scaduto 9 years ago

Pericolo valanghe

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

In sintesi

Successive moderate storms will keep danger elevated, particularly in steep, wind-affected terrain. If the 24 hour snow amounts exceed 25 cm, bump avalanche danger up by one rating.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely
    Dimensione
    1–2
    Wind slabs are building over a crust layer. This layer may slide easily, particularly on steep convex terrain or where the wind has blown it into more cohesive slabs.

Confidence

Moderate - Intensity of incoming weather systems is uncertain

Weather Forecast

Thursday: 10-15 cm new snow expected with freezing levels around 1000 m. Strong southwesterly winds.Friday: 10-15 cm new snow expected with freezing levels around 1000 m. Moderate southwesterly winds.Saturday: 5 cm new snow expected with freezing levels around 900 m. Moderate southwesterly winds.

Avalanche Summary

Ski cutting produced soft slab avalanches up to size 1.5 in recent storm snow at treeline and alpine elevations on Tuesday. Similar results would be expected for Thursday.

Snowpack Summary

Approximately 30-40 cm new snow now sits on top of a rain crust (or multiple crusts) that formed during the recent wet weather. Strong winds have blown snow around in exposed areas creating drifts and scoured areas. Snowpack depths are typically around 140 cm in sheltered treeline locations, although deeper (and shallower) spots certainly exist on account of the strong winds.

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