Lawinenlagebericht

Northwest Inland

Dec 13 – 14, 2011Avalanche Canada
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Archiviert · abgelaufen 15 years ago

Lawinengefahr

Thu
Fri
Hochgebirge
2 · Mässig
Waldgrenze
2 · Mässig
Unterhalb
1 · Gering
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Lawinenprobleme

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible - Likely
    Größe
    1–3
    Expect new wind slabs on northeasterly aspects. Loading may occur lower on the slopes due to forecast high winds in some parts of the region.

Confidence

Fair - Timing, track, or intensity of incoming weather is uncertain on Friday

Weather Forecast

Wednesday: Flurries expected in the evening with light - moderate ridgetop winds from the north east. Thursday: Sunny and cold during the day. Treeline temperatures near -10. Winds light from the north east. Friday: Cloudy with moderate snowfall expected. Freezing levels may rise to 700m.

Avalanche Summary

No recent avalanche activity has been reported.

Snowpack Summary

Up to 20cm new snow has fallen on a variety of snow surfaces including surface hoar, melt-freeze crusts and facetted snow. For the most part all aspects between 900m-2000m have a hard melt freeze crust. This crust is widespread and is lingering in most start zones. This may be a suspect layer of concern as when future storms with significant snow and wind arrive. Above this crust surface hoar (feathery crystals) and facets (sugary crystals) are forming. This exists at treeline and below treeline elevations. The recent winds in the alpine have destroyed the surface hoar eliminating one problem but creating a wind slab problem. These wind slabs are in the immediate lee of features, with easy shears and cracking being reported. The midpack seems to be well settled and strong. Thanks to those who have sent in field observations. If you have any info from the field, we would love to hear from you. Write to us at [email protected]

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