Avalanche Advisory Block

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Eastern Sierra Avalanche Advisory - 5/23/17

Bottom Line:

Primary avalanche problems for Tuesday thru Thursday will focus on Loose Wet avalanches and very isolated Wet Slabs.

Loose Wet will be a concern for all elevations and aspects (where snow is present). The risk for Loose Wet releases may become somewhat more widespread as overnight Lows remain near or above freezing and daytime temperatures remain above seasonable. Be especially cautious in complex terrain where sheltered rocky features can promote warming (chutes, couloirs, etc) and inhibit overnight freezing.

Tues thru Thursday – All elevations and aspects - Natural Loose Wet avalanches unlikely, triggered are possible on steep terrain greater than 35 degrees.

Wet Slab - Weak overnight freezes and unseasonably warm days are forecasted, which can cause the snowpack to become saturated with water during the day, especially where the snow is thin or where free water runs along an ice lens undermining the snowpack above, producing a Wet Slab release when it fails. These are generally very isolated in nature and limited in size but can be very dangerous if a rider becomes entrained. Use extra caution where the snowpack is thin and/or punchy (unsupportive), ie., Cliff bands, rocky features, shallow snowpack resting on grassy slopes, treed slopes, etc.

Tues thru Thursday – All elevations and aspects - Natural Wet Slab avalanches unlikely, triggered are possible. 

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