Boletín de aludes

Jasper

Apr 27 – 28, 2018Parks Canada
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Archivado · caducó 8 years ago

Peligro de aludes

Sat
Sun
Alta montaña
Sin grado
Límite del bosque
Sin grado
Bajo el límite
Sin grado
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Lo esencial

The avalanche cycle will start early and continue late into the evening.

Problemas de aludes

  • Cornices

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Very Likely
    Tamaño
    1.5–3
    All cornices should be considered unstable a this time. Stay away from them and away from terrain below them. Rising temperatures are causing cornices to fall triggering slopes below. Give them a wide berth.

  • Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely - Very Likely
    Tamaño
    1.5–3.5
    With warm temperatures and solar radiation these events are likely to increase over the next few days from all aspects in the sun. Good triggers are falling sections of cornices. These events can run far into the valley below

  • Loose Wet

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Very Likely
    Tamaño
    1–3
    No overnight crust formation is expected at treeline and above. With most of the snowpack below 1,900m being isothermal expect these avalanches to start early on solar slopes at all elevations.

Weather Forecast

Very warm temperatures are forecasted with freezing levels extending high into the alpine, 3,700m. Virtually no overnight recovery of the snowpack is expected once out of the valley bottom. An inversion may make for better AM travel in the valley bottom. Pack your sun block.

Snowpack Summary

Moist snow extends to treeline on all but the most Northerly slopes. On Southerly slopes this continues into the alpine. Persistent slabs can be found on most aspects at treeline and above. These have been reactive to large triggers like cornice failures. Below 1,900m the snowpack is going isothermal on a daily basis.

Avalanche Summary

The spring avalanche cycle will be in full swing over the next few days. Large and destructive avalanche can be expected from all elevations and running far into the valley bottom. Without an overnight freeze forecasted these events will start early, perhaps before midday. Explosive results on  thursday produced numerous avalanche to size 2.5.

Confidence

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