Lawinenlagebericht

Central Sierra Nevada

Sierra Avalanche Center
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Lawinengefahr

Hochgebirge
2 · Mässig
Waldgrenze
2 · Mässig
Unterhalb
2 · Mässig
Veraltet — dieser Lagebericht ist 8 years ago abgelaufen. Du siehst vergangene Verhältnisse, nicht den aktuellen Bericht.

Kernpunkte

Periods of intense April sun this morning may cause enough warming for some small loose wet instabilities to form in isolated areas. MODERATE avalanche danger would result from this expected warming. If the forecasted cloud cover materializes sooner than expected, loose wet instabilities may be unlikely and less avalanche danger would exist. 

Lawinenprobleme

  • Loose Wet

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

    Below normal temperatures and light to moderate northerly winds combined with an expected increase in cloud cover by midday should keep wet snow instabilities to a minimum. However, some short periods of intense April sunshine this morning may cause enough warming for some wet snow to form. Some small human-triggered roller balls, pinwheels, and loose wet avalanches are possible in isolated areas on steep slopes that do receive sunshine this morning. Some of them could still entrain enough snow to cause problems for backcountry travelers. If the cloud cover materializes before midday, loose wet instabilities may be unlikely. If periods of sun continue into the afternoon, loose wet instabilities could become larger and more widespread.

    Conditions can change quickly from cold soft snow to sunny warm unstable snow as soon as the sun hits the snow surface. If the snow starts to feel wet and sticky or small signs of loose wet instabilities like small roller balls or pinwheels start to occur, it is time relocate to a colder aspect. Shaded N aspects should experience the least warming and have the best potential for preserving some patches of colder snow.

Avalanche Discussion

* Yesterday variable conditions existed on Rubicon Peak with frozen breakable crusts on the E aspects and a mix of breakable crust and lingering soft snow on the northerly aspects. Widespread cloud cover and cool temperatures prevented loose wet instabilities.

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