Bollettino valanghe

Banff Yoho Kootenay

Nov 28 – 29, 2019Parks Canada
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Archiviato · scaduto 7 years ago

Pericolo valanghe

Fri
Sat
Alta quota
2 · Moderato
Limite del bosco
1 · Debole
Sotto il limite
1 · Debole

In sintesi

The main avalanche concern continues to be the lingering wind slabs. The most inviting slopes to ski may be those harboring this problem. Ice climbers may find it on approach or between pitches.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely - Possible
    Dimensione
    1–2

    Widespread wind effect in the alpine.  The main concern for this problem is on lee features near ridge crests and cross loaded gulleys where slabs may be 10-30 cm thick.

Weather Forecast

A predominant North East flow has moved into the forecast region. Mountain top winds forecasted to be moderate to strong from the EAST overnight, & ease through Thursday.

Thursday temperatures are marginally warmer (-20 to -13 range), isolated light flurries along the Eastern part of the region,

Friday - temps warm a bit as we head into the weekend.

Snowpack Summary

Widespread wind effect in the alpine. Some concern remains for possibly triggering old wind slabs from the strong SW winds on specific lee features. The Nov 8 crust is down 20-30 cm and present up to ~2400 m. The lower snowpack is a mix of weak facets & crusts. Snowpack depths at treeline vary from 60-90 cm with up to 140 cm in lee areas.

Avalanche Summary

Although the wind slabs from last weekend have become less reactive, ski cuts and explosive work on Tuesday triggered slabs up to size 1.5, 20-30 cm thick. No new natural avalanches in past few days.

Confidence

Regioni coperte