Lawinenlagebericht

Purcells

Jan 27 – 28, 2014Avalanche Canada
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Archiviert · abgelaufen 13 years ago

Lawinengefahr

Wed
Thu
Hochgebirge
1 · Gering
Waldgrenze
1 · Gering
Unterhalb
1 · Gering

Kernpunkte

'Low Hazard' does not mean 'No Hazard' and isolated avalanches may still be possible. Check out this blog post for further discussion.

Lawinenprobleme

  • Deep Persistent Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Unlikely
    Größe
    3–6
    A crust/facet weakness near the base of the snowpack continues to linger but is typically unreactive to triggering. This remains a low probability, high consequence problem for some areas of the region.

Confidence

Good

Weather Forecast

The ridge of high pressure begins to weaken on Tuesday and will break down on Wednesday. Light precipitation is expected for Wednesday and Thursday.Tuesday: A mix of sun and cloud, dry conditions, treeline temperatures around -10C, light SW winds at treelineWednesday: Cloudy, snowfall 3-5cm, treeline temperatures around -8C, light SW winds at treelineThursday: Cloudy, snowfall 4-6cm, treeline temperatures around -10C, light NW winds at treeline

Avalanche Summary

No new avalanches have been reported since the solar activity on Friday and Saturday.

Snowpack Summary

The recent dry, warm weather has generally consolidated the upper snowpack. As temperatures now begin to cool, stability in the upper snowpack should increase further. Keep in mind that 'Low Hazard' does not mean 'No Hazard' and that residual risk of avalanches still exists. Old, stubborn wind slabs may still exist in isolated areas. A basal facet/crust combo (weak sugary snow above and below a crust) near the ground is still a concern in some areas. The depth of this layer makes triggering an avalanche on it unlikely (maybe a heavy load on a thin spot in steep terrain, rapid temperature change, or cornice fall), but the consequences would be large and very destructive.Large surface hoar is reported to have formed in sheltered areas at all elevations with the exception of open south-facing slopes where the sun has caused melting and formed a sun crust.

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