Lawinenlagebericht

South Rockies

Feb 26 – 27, 2015Avalanche Canada
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Archiviert · abgelaufen 12 years ago

Lawinengefahr

Sat
Sun
Hochgebirge
2 · Mässig
Waldgrenze
1 · Gering
Unterhalb
1 · Gering
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Kernpunkte

We could see a dusting of snow on Friday. Not enough to raise avalanche danger, but maybe it will improve snow quality a little.

Lawinenprobleme

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible
    Größe
    1–2
    Recent variable winds have produced thin wind slabs on a variety of slopes in exposed alpine terrain. 

  • Persistent Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Unlikely - Possible
    Größe
    3–6
    Triggering this problem is unlikely, but be wary of high north aspects where the near-surface crust in absent or breakable.

Confidence

Good - The weather pattern is stable

Weather Forecast

A weak trough of low pressure will bring some cloud and a chance of flurries on Friday. Generally we’re looking at 2-5 cm with a snow line at valley bottom. The ridge of high pressure rebuilds for the weekend resulting in mainly sunny skies. The freezing level is around 600-800 m on Saturday and little over 1000 m on Sunday. Winds are generally light or moderate from the NW-NE.

Avalanche Summary

No new avalanches have been reported recently.

Snowpack Summary

10 to 15cm of old storm snow sits on a thick supportive crust that extends up to around 2200m. Variable winds have created wind affected surfaces and pockets of wind slab in exposed terrain at higher elevations. Below 2200m the crust is effectively capping the snowpack, preventing riders from tickling deeper persistent weak layers. In alpine areas, where the crust is not present or is less thick, it could still be possible to trigger a deep avalanche from sparsely covered rocky slopes or with a heavy load (i.e. cornice fall).

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