Bollettino valanghe

Central Sierra Nevada

Sierra Avalanche Center
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Pericolo valanghe

Alta quota
1 · Debole
Limite del bosco
1 · Debole
Sotto il limite
1 · Debole
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Non aggiornato — questo bollettino è scaduto 13 years ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

Avalanche danger is LOW for all elevations and aspects. Normal caution is advised. Insolated areas of instability may exist near and above treeline in complex or extreme terrain.

Problemi valanghivi

  • Cornices

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely
    Dimensione
    1

    Finding a lingering unstable wind slab is unlikely but not impossible today, especially in complex or extreme terrain. The most likely location for any continued instability is in near or above treeline terrain on a N to NE aspect. Evidence of any snowpack instability will be difficult to find outside of a snowpit. Stack the odds in favor of survival by exposing only one person at a time to avalanche terrain. Travel from one well established (not marginal) island of safety to the next when moving into and out of avalanche terrain.

Avalanche Discussion

Observations made yesterday on Peak 9,773' (Mount Rose backcountry) and on road cuts along the Blue Lakes Road (Carson Pass area) both indicated stable snowpack conditions. Settlement and strength gains continue to occur within both the recent storm snow and basal facet layers. Well above freezing air temperatures over the past few days and areas of rain/mist on Feb 13 created a shallow layer of wet surface snow in most areas. Some refreeze of the snow surface has begun.

Windward areas are now well scoured. There is no longer any snow available for continued wind transport and subsequent wind loading. Wind slabs that formed on Feb 12 still exist, but have had time to increase bonding to the snow layer below.

Regioni coperte