Bollettino valanghe

Jasper

Feb 23 – 24, 2019Parks Canada
Vedi sulla mappa
Archiviato · scaduto 8 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

Be aware of newly developed windslabs in immediate lee features. Good skiing can be found sheltered locations.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–2
    Strong SW winds at parkers upper for the last 24 hours, creating wind slabs in immediate lee's.

  • Deep Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely - Possible
    Dimensione
    1.5–3
    It is possible to trigger deep slabs in shallow snowpack areas. Terrain management and assessment is critical to a safe day.

Weather Forecast

Saturday cloudy with sunny periods, no precipitation alpine temperature high -17 C, ridge wind east 10 km/h.Freezing level at valley bottom.Mountain weather forecast available at Avalanche Canada.

Snowpack Summary

The upper snowpack is faceted creating a weak slab over a faint, inconsistent layer of surface hoar/facets on a crust down 40cm. The thicker snowpack spots have a strong mid-pack bridging the deep persistent basal weakness (depth hoar). Thinner snow-pack zones are much less consolidated, where the midpack may act as a slab on the basal depth hoar.

Avalanche Summary

Yesterdays field team reported dry loose from steep Alpine terrain and thin (5cm), but present soft wind effect at immediate ridge top; reactive to skis but not alarming or hazardous. 2600m near Cataract Pass in the Columbia Icefields region. No other reports of new avalanche activity.

Confidence

Wind effect is extremely variable

Regioni coperte