Lawinenlagebericht

Central Sierra Nevada

Sierra Avalanche Center
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Lawinengefahr

Hochgebirge
2 · Mässig
Waldgrenze
2 · Mässig
Unterhalb
1 · Gering
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Veraltet — dieser Lagebericht ist 6 years ago abgelaufen. Du siehst vergangene Verhältnisse, nicht den aktuellen Bericht.

Kernpunkte

Slabs of wind drifted snow that formed over the last 24 hours above treeline and near treeline are the main avalanche concern today. There is a slight chance that a minor loose wet avalanche problem could develop today. MODERATE avalanche danger exists above treeline and near treeline with LOW avalanche danger below treeline.

Lawinenprobleme

  • Wind Slabs

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

    Wind drifted new snow from the past 24 hours has built some wind slabs in near treeline and above treeline terrain. These wind slabs exist mainly on the leeward side of ridges and sub ridges on NW-N-NE-E-SE aspects. Avalanche size is expected at D1 in most areas with up to D2 possible in the areas with the greatest amounts of wind drifted snow.

    Identify where wind drifted snow has deposited and formed into wind slabs. Areas below cornice features or where pillows of deeper wind drifted snow exist are suspect. Shooting cracks are a sign of unstable snow in the immediate area. Once you have identified the areas of concern for this avalanche problem, move around them with caution and with an intentional plan to minimize risk.

  • Loose Wet

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Unlikely
    Größe
    1

    It is unlikely but not impossible that enough solar radiation will make it through the cloud cover today to create some minor loose wet avalanches. Sufficient warming is most likely to occur below about 8,000' to 8,500'. Pay attention to snow surface warming when traveling E-SE-S-SW-W aspects, especially near exposed rocks. Roller balls are an indication that this avalanche problem is forming.

Avalanche Discussion

* Drifting snow was reported yesterday near and above treeline. By the afternoon hours, drifts to 10 inches deep were reported from the vicinity of Blue Lakes (Carson Pass area).

* New snow has deposited on top of firm melt-freeze crust in most areas on E-SE-S-SW-W aspects. New snow has deposited on top of more variable conditions ranging from soft to firm on NW-N-NE aspects.

* The existing snowpack has a few relative weak layers in the upper snowpack on NW-N-NE aspects but is in good condition to handle the amounts of new snow loading received in the past 24 hours.

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