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Avalanche on W aspect 8,700 feet lower Casaval Ridge (Giddy Giddy Gulch)
Location: Lower Casaval Ridge (Giddy Giddy Gulch), 8,700 feet W aspect
Time of Occurance: 20181225, early morning during wind event, 8 a.m.?
Path Characteristic: W aspect, crown not visible, 30 - 40 degree slope, starting zone in steep stunted trees
Event Characteristic: D1R1, Windslab, Natural. Likely ran on melt freeze crust from Dec 19th warming event or Dec 14th rain crust? No other activity in area observed. See snowpack observation and pit profile from event here: https://www.shastaavalanche.org/snowpack-observation/strong-wind-lower-c...
Skies were clear above 6,900 feet with a mix of lower clouds below. Wind out of the north were gusting down Avalanche Gulch. Large plums of blowing snow were observed above treeline. These winds were very productive striping any exposed windward surfaces and packing low lying leeward areas.