Lawinenlagebericht

Togwotee Pass

Bridger-Teton Avalanche Center
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Lawinengefahr

Hochgebirge
3 · Erheblich
Waldgrenze
2 · Mässig
Unterhalb
Keine Stufe
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Veraltet — dieser Lagebericht ist 10 years ago abgelaufen. Du siehst vergangene Verhältnisse, nicht den aktuellen Bericht.

Kernpunkte

Mountain temperatures are a few degrees warmer than yesterday morning. Above 7,500 feet, backcountry travelers venturing onto steep, avalanche-prone slopes could trigger recently developed wind slabs with greatly varying depths. As the day progresses, daytime warming, abundant sunshine and the absence of strong winds will all combine to heat snow surfaces and increase the likelihood of triggering these slides. This warming will be most significant on sunlit aspects, and wet loose sluffing will be likely in the afternoon. The likelihood of cornice failures will also increase in the afternoon. Monitor the extent to which the surface of the snowpack is heating up, and seek out shaded terrain when snow surfaces become damp or crusts begin to break down. Below 7,500 feet, the snowpack is mostly stable this morning, but the chance for wet slides could return in the afternoon.

Lawinenprobleme

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible
    Größe
    1–2

    Over all, diurnal warming and cooling cycles over the past couple of days have decreased the likelihood of triggering recently developed wind slabs. The trend of decreasing hazard overnight and increasing hazard during the heat of the day will continue. On a variety of aspects above 7,500 feet, skiers and riders could trigger recently developed wind slabs. These slabs could fail on density breaks or graupel layers within the recent snowfall. Faceted snow from January can also be found in some areas. This scenario results in slab depths ranging anywhere from six inches to three feet. In the afternoon, the chance of natural activity will return.

  • Deep Persistent Slabs

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

    The chance remains for backcountry travelers to trigger very large deep slab avalanches on northerly aspects above 9,000 feet. If triggered, these dangerous hard slabs could involve the full depth of the snowpack. These slabs could be triggered by larger loads such as snow machines or groups of people, or step down from the release of wind slabs.

Avalanche Discussion

( Discussion is generated from the previous day's afternoon forecast. )Similar conditions are expected for Tuesday. Skies will be clear, and temperature inversions will build overnight. Valley lows will be in the single digits, and the mountains will drop into the mid teens. During the day, highs at the upper elevations will be near 30, and the valleys will rebound to near freezing. Northerly to northeasterly ridgetop winds will range from 5 to 15 miles per hour.The general avalanche hazard is expected to be Considerable on Tuesday. Skiers and riders venturing onto steep avalanche-prone slopes could trigger wind slabs on a variety of aspects above 7,500 feet. These slabs could fail on density breaks within the recent snowfall or down to graupel layers that fell during the previous storm cycle. This scenario results in slab depths ranging anywhere from six inches to four or five feet. As the day warms, these slides will become more susceptible to failure, especially on sunlit aspects. Afternoon warmth will also bring back the chance for wet loose sluffs, and cornice failures will become more likely as well. In the Togwotee Pass area, the chance lingers to trigger full depth avalanches on northerly aspects above 9,000 feet.

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