Bollettino valanghe

Banff Yoho Kootenay

Mar 7 – 8, 2018Parks Canada
Vedi sulla mappa
Archiviato · scaduto 9 years ago

Pericolo valanghe

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

In sintesi

Good skiing and travel conditions continue, though the sun is beginning to pack a punch on S aspects. Recent wind effect is keeping the danger at Moderate in the alpine.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–1.5
    Increasing alpine West winds have formed wind slabs in lee areas near ridge crests. In steep unsupported terrain skier triggering is possible.

  • Loose Dry

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely - Possible
    Dimensione
    1–1.5
    This problem is mainly for the Kootenay region that received more storm snow this pasty weekend. It will be particularly prevalent in steep confined gullies, and/or where the old snow below the storm snow is weak and facetted.

Weather Forecast

Light to moderate W winds for Wednesday and little to no new snow.  Temperatures will stay below freezing but just barely and alpine temperatures will be in the -10 to -12C range.  Thursday and Friday look even warmer, especially on the front ranges. 

Snowpack Summary

Variable amounts of storm snow (10-25 cm) now sit on top of a supportive mid-pack with variable wind effect in the alpine. The higher amounts of storm snow are in the southern region. Sun crust forming on some steep solar aspects. The deeper facet layers down 80-150 cm remain weak but are presently difficult to propagate.

Avalanche Summary

Sluffing and thin wind slabs up to size 1.5 were observed in steep alpine terrain in the last 2 days, including some solar triggered sluffs out of rocky areas. No other avalanches reported or observed.

Confidence

Regioni coperte