A first hand account of the Nov 16 Hourglass avalanche became available on Nov 21. Read it here.
Natural cornice collapse triggers loose wet avalanche on Donner Peak.
Donner Summit Area
Date and time of avalanche (best estimate if unknown):
Wed, 03/15/2017 - 11:47
United States39° 18' 44.3232" N, 120° 18' 53.352" W
Obvious avalanche path
Observation made by: Forecaster