Lawinenlagebericht

Jasper

Nov 9 – 10, 2020
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Archiviert · abgelaufen 6 years ago

Lawinengefahr

Tue
Wed
Hochgebirge
2 · Mässig
Waldgrenze
1 · Gering
Unterhalb
Keine Stufe
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Kernpunkte

Early season hazards are very present at the moment. Reverse loading could have built wind slabs on the southerly aspects.

Lawinenprobleme

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Unlikely - Possible
    Größe
    1–2.5

    On Nov 4th the zone received rain and 10-30cm of warm snow with W and N winds creating some wind slab in the alpine.

Weather Forecast

Monday: Cloudy with sunny periods. Alpine temperature: Low -13 C, High -10 C. Ridge wind west: 15 km/h. Freezing level at valley bottom.

Snowpack Summary

Treeline has a snowpack of 30-40cm with overall supportive travel. 10cm of recent snow has been redistributed from moderate northerly and westerly winds and overlies a rain crust which exists up to 2200m. Winds have formed wind slabs and wind effect on S through E aspects at ridge top. Below treeline the snow remains below threshold values.

Avalanche Summary

Friday's patrol noted one size 2.5 wind slab in the alpine on large east facing rock slab, It appeared to be cornice triggered, started loose and resulted in a slab lower down. Several other size 2 wind slabs were observed in alpine E aspects that near ridge tops. No new avalanches observed over the weekend

Confidence

Due to the number and quality of field observations

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