Lawinenlagebericht

Central Sierra Nevada

Sierra Avalanche Center
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Lawinengefahr

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

Kernpunkte

Isolated areas of unstable snow may linger in places that were recently filled in with wind drifted snow. Locations in or adjacent to chutes, couloirs, cliff bands, or other forms of complex terrain have the greatest potential to hold isolated areas of unstable snow. In the big picture, avalanches are unlikely on a regional scale.

Lawinenprobleme

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Unlikely
    Größe
    1–1.5

    Ridgetop winds remain out of the NE to E, but have decreased in speed. The amount of blowing and drifting snow decreased greatly over the past 24 hours. Recent gale force NE winds deposited stiff slabs of wind-blown snow on the downwind side of ridges, gullies, and other wind-exposed terrain features.

    For the most part, stiff wind slabs that formed in locations that were filled in by wind drifted snow have had time to stabilize. Isolated areas of unstable snow may linger, especially in and around various forms of complex terrain including chutes, couloirs, and cliff areas. Any avalanches that are triggered by backcountry travelers today are expected to be small, with much of the consequences coming from being carried into or over down slope hazards such as rocks, trees, or cliffs.

    Clues exist to help identify where unstable wind slabs may linger. These include new cornices, deposits of wind-drifted snow, stiff wind-packed snow, and lightly rippled snow surfaces. Look for cracking in wind-blown snow as a sign of unstable wind slabs in the immediate area.

    (1/7/2025)

    Triggering snow surface cracking such as this is an indication of potentially unstable wind slab in the immediate area. This long shooting crack was triggered Tuesday in an area where wind blown snow had filled in on SW aspect terrain. Incline Peak, NV

    Photo: Sierra Avalanche Center

Avalanche Discussion

The recent strong NE wind scoured away snow from most near and above treeline areas facing N-NE-E. This left behind a mix of wind-sculpted features and firm ice. If your travel plans take you into alpine terrain near exposed ridges, gullies, and open areas, expect to find variable snow surface conditions. Traveling in wind protected areas such as forested slopes near or below treeline can help reduce exposure to today's avalanche problem and lead to softer, more consistent snow.

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