Eastern Sierra avalanche advisory

Posted January 14, 2010 by Sue Burak

Jan 13th - Updated avalanche information from June Mountain

Jan 13th - The avalanche danger rating is MODERATE today in wind loaded terrain. Skier triggered avalanches are possible. Pay special attention to steep, open areas at mid elevation tree covered slopes in the June Mountain area. A rain crust on north aspects between 7,500 and 8,500 ft provided the bed surface for a large avalanche.

Backcountry travelers need to be aware of heightened avalanche conditions in wind loaded terrain on ridges and convex rollovers. Evaluate snow and terrain carefully.

 

Jan 13th - Ski patrol at June Mountain released a large one meter slab avalanche this morning. The slide occurred in wind loaded terrain adjacent to the trees below June's mid chalet. The bed surface was a rain crust. Other control results show small slabs released within the new storm snow.

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Please note that the avalanche danger rating in this advisory expires in 24 hours. This advisory is our best interpretation of snow pack conditions and NWS forecasts issued today. Backcountry travelers should be aware that elevation and geographic distinctions are approximate and that a transition zone exists between upper and lower elevations. Avalanches do not happen by accident and most human involvement is a matter of choice not chance. Most avalanche accidents are caused by slab avalanches that are triggered by the victim of member of the victim's party. Even small slides can be dangerous. Always practice route finding skills and carry avalanche rescue gear. Remember that avalanche danger ratings are only general guidelines. Distinctions between geographic areas, elevations, slope aspects and slope angles should be made.

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