Valanga

Needle Peak

Avalanche.org observerSnake River Range
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Foto dell’osservazione 1Foto dell’osservazione 2Foto dell’osservazione 3

Quick report

Wind scouring on ridge tops, 16-20 inches of dry blower powder on crust, substantially more than the 4" reported by the snowtel. Snowing all morning, 3ish inches on valley floor when we got back to the car. Hand pit showed dry snow on top of firm crust, no slab formation in pit but snow was sliding as if it there were slabs forming. notable wind scouring on ridge tops, cornices very developed. Dropped a medium cornice chunk on north aspect before descending, cornice brought loose dry slough down with it but no signs of slab formation. Proceeded on with rest of tour where we found substantially more snow than indicated in the forecast, 16-20 inches of dry powder on top of a stout crust.

Avalanche

Size
D2 R3
Type
SS
Aspect
N
Trigger
AS
Elevation
9000 ft

Dropped in north facing relatively sheltered trees, found substantially more snow than anticipated and no signs of wind affect. Hand pit at top showed 16-20 inches of light density pow on firm crust. approximately 4-5 turns into line the center and sides of the wooded gulley started to slide on the crust noted above. crown was varying, estimated 12-18 inches, debris ran approx 800 vert and set off multiple much smaller slabs in the run out.