Bollettino valanghe

Jasper

Apr 28 – 29, 2014Parks Canada
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Archiviato · scaduto 12 years ago

Pericolo valanghe

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

In sintesi

The avalanche danger is Low as long as the melt freeze crust remains intact.  The danger will rise rapidly as the crust deteriorates with sun exposure and daytime heating.  Freezing levels are to rise dramatically Wednesday and Thursday.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–2
    Slabs that rest on the April 22 crust have not been reactive lately. It is still possible to trigger these slabs on steep terrain below ridgelines or convex features.

  • Loose Wet

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–3
    Travel early before the heat of the day, and avoid big slopes in the afternoon.

  • Deep Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely - Possible
    Dimensione
    2–3
    Cornice failures or triggering from thin spots have the potential to initiate deep avalanches. Depending on aspect, these could be a wet or dry slab characteristic.

Weather Forecast

Freeze-thaw conditions continue. Tuesday will be mainly sunny and slightly warmer temperatures as a result. Wednesday and Thursday will be sun and freezing levels rising to 3500m.

Snowpack Summary

There is rain crust from the valley bottom to 2,350m and a sun crust into Alpine on solar aspects. Settled wind slabs are on NE aspects from 2,000 m to the alpine. Moist and wet snow exists below the crust extending into the alpine on solar aspects. The mid-pack is solid on North aspects. Large and ominous cornices.

Avalanche Summary

Several loose wet size 2 noted on Mt sask at 2100-2500m stopping before the river. One size 2 loose wet off boundary peak. Cornice failure peak across sunwapta station E aspect initiated nothing. Dated report sometime before Saturday from Cirrus creek size 3 slab.

Confidence

The weather pattern is stable on Tuesday

Regioni coperte