Boletín de aludes

Central Sierra Nevada

Sierra Avalanche Center
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Peligro de aludes

Alta montaña
1 · Débil
Límite del bosque
1 · Débil
Bajo el límite
1 · Débil
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Desactualizado: este boletín caducó 13 years ago. Estás viendo condiciones pasadas, no el boletín vigente.

Lo esencial

Avalanche danger is LOW at all elevations on snow covered NW-N-NE-E aspects. Avalanche danger is generally nonexistent on SE-S-SW-W aspects due to a lack of snowcover.

Problemas de aludes

  • Cornices

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Unlikely
    Tamaño
    1

    At this time triggering an avalanche is unlikely on a regional scale. Given that the existing snowpack is composed mainly of weak faceted snow that looks nothing like what is typically found in this region at this time of year, finding a localized area of unstable snow is not an impossible scenario. The most likely area to encounter snowpack instability is near treeline and below treeline on NW-N-NE aspects. In these areas, well developed weak layers of faceted snow exist. The degree to which a slab capable of sustaining propagation exists on top of these weak layers is variable from one location to the next. In areas where a significant slab does exists, it has become very difficult to trigger an avalanche. That said, keep the odds stacked in your favor by exposing only one person at a time to avalanche terrain and by moving from one well established safe zone to another.

Avalanche Discussion

Observations made yesterday on Lincoln Ridge (Yuba Pass area) matched well with other recent observations from around the forecast area. A weak but stable snowpack exists in the areas of continuous snowcover which are found on NW-N-NE-E aspects. In these areas the snowpack is composed mainly of faceted snow, with the deepest snowpack found near and below treeline on NW-N-NE aspects. Faceted weak layers that exist in these areas have shown the ability to support the weight of the overlying snowpack plus the weight of a person. Occasionally, snowpit tests point out that some of these weak layers still hold the ability to propagate if weak layer collapse could be triggered. At this time, triggering the necessary weak layer collapse is difficult to accomplish and unlikely to occur.

Regiones cubiertas