Boletín de aludes

Jasper

Apr 7 – 8, 2021
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Archivado · caducó 5 years ago

Peligro de aludes

Fri
Sat
Alta montaña
3 · Notable
Límite del bosque
2 · Moderado
Bajo el límite
1 · Débil

Lo esencial

Low elevations (below 1800m) have transitioned to spring conditions, plan to travel early.

The Icefields region remains wintery and good travel and riding can be found, mostly in sheltered areas.

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely
    Tamaño
    1–2.5

    Significant snow is available for transport at all elevations, additional inputs forecasted. Expect wind slabs to be reactive to human triggering.

  • Cornices

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    2–3

    You need to be very cautious near or under these giant features. If triggered, it will step down to deeper layers.

  • Loose Wet

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–2

    Freezing levels are expected at about 1700 meters. Places like Parkers ridge (over 2000m) will most likely see dry snow. Further down the highway by Weeping wall could see a mix of snow and rain.

Weather Forecast

Wednesday night: Flurries. HN: 6 cm. Alpine temperature: Low -11 °C. Ridge wind W: 15 km/h gusting to 50 km/h.

Thursday: Cloudy with sunny periods. Alpine temperature: High -9 °C. Ridge wind W: 15-30 km/h. 

Friday: Mainly cloudy with scattered flurries. HN: 4 cm. Low -12 °C, High -8 °C. Ridge wind SW: 20 km/h gusting to 50 km/h.

Snowpack Summary

New snow and steady SW winds building wind slab in open ALP and TL features. Snowpack shows strength and bonding in field tests; recurring instabilities are found close to surface. We are most concerned about potential to trigger deeper, persistent slabs (Fc, DH), especially as the snowpack changes with typical spring inputs (rain, sun, wet snow)

Avalanche Summary

A road patrol south today noted no new avalanches. Mostly obscured in the Alpine.

Confidence

Intensity of incoming weather systems is uncertain

Regiones cubiertas