Lawinenlagebericht

Tetons

Bridger-Teton Avalanche Center
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Lawinengefahr

Hochgebirge
2 · Mässig
Waldgrenze
2 · Mässig
Unterhalb
1 · Gering
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Veraltet — dieser Lagebericht ist 9 years ago abgelaufen. Du siehst vergangene Verhältnisse, nicht den aktuellen Bericht.

Kernpunkte

Backcountry travelers venturing onto steep, wind-loaded, avalanche-prone slopes could trigger recently developed wind slabs in terrain that held snow from October. Don’t let clear skies cloud your judgement. When evaluating the snowpack, determine if the old snow surfaces are present and how well the new and old snow are bonding. Also, verify the absence of any potential weak layers within the recent snowfall. Avalanches are unlikely below 8,000 feet where little snowfall has accumulated.

Lawinenprobleme

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible
    Größe
    2–3

    In the past week, the Tetons have received around 40 inches of new snow containing close to four inches of snow water equivalent. Strong westerly to southwesterly ridgetop winds have accompanied this snowfall forming dense wind slabs in leeward terrain. In areas where old snow surfaces are present, backcountry travelers could trigger these slabs to depths exceeding four feet. These old snow surfaces increase in extent from sunlit to shaded aspects above 9,000 feet and dip down to 8,000 feet on north facing slopes.

Avalanche Discussion

Large dense, slab avalanches that could fail on crusts and faceted old snow surfaces continue to be a hazard in steep terrain on west through north to east aspects at the upper elevations and on northerly aspects above an elevation of 8,500 feet. Assessing this hazard in steep avalanche terrain is problematic. Large slab avalanches with severe consequences could be triggered by the weight of a single person even though a slope may have been crossed multiple times. Snowpack stability tests may not be reliable. A conservation approach to suspect terrain is warranted. The general avalanche hazard is forecast to be MODERATE above an elevation of 8,500 feet and LOW below that elevation.

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