These observations document past conditions at a small and variable scale. They are not to be confused with an avalanche forecast. They come from a variety of sources. We can only vouch for the quality of those produced by the SAC forecasters and professional observers.
Date and time of observation or avalanche occurrence Location Media Observation made by
12/18/2017 - 13:00
Snowpack Observation 		just S of Andesite Peak
Donner Summit Area 		Educator
Donner Summit Avalanche Semina
12/01/2018 - 14:15
Snowpack Observation 		Johnston Canyon
Donner Summit Area 		Educator
Tahoe Mountain Scho
12/23/2017 - 14:30
Snowpack Observation 		Andesite Ridge
Donner Summit Area 		Wind loaded area on Andesite RidgeCloud cover and thin coverage on S. side of Castle Peak Educator
Tahoe Mountain Scho
01/08/2023 - 14:00
Snowpack Observation 		Silver Peak
Cabin Creek, Deep Creek, or Pole Creek Area 		wind effect in near treeline terrain east of Silver Peak Educator
Alpenglow Expeditio
03/26/2016 - 15:00
Snowpack Observation 		Snowshed Wall area
Donner Summit Area 		Educator
Tahoe Mountain Scho
12/29/2018 - 14:15
Snowpack Observation 		Andesite Peak
Donner Summit Area 		Visual outline of the Snowpack on a West Aspect Near Treeline @ 7600' Educator
Tahoe Mountain Scho
01/17/2016 - 13:30
Snowpack Observation 		NW of Snowshed Wall
Donner Summit Area 		Educator
Tahoe Mountain Scho
12/19/2020 - 13:15
Snowpack Observation 		Andesite peak
Donner Summit Area 		Dec 11 Facets, some appeared to start rounding at this location Students showcasing the current drastic difference between boot and ski pen Educator
Tahoe Mountain Scho
02/11/2023 - 15:26
Snowpack Observation 		Andesite Ridge
Donner Summit Area 		Pit wall showing a layer of graupel (2/5) from 37 to 38 cm down. Graupel 3 mm to 5 mm. Graupel 3 mm to 5 mm. Graupel 3 mm to 5 mm. CTM (14) SP Educator
Blackbird Mountain Guid
02/11/2018 - 11:45
Snowpack Observation 		Castle Valley
Donner Summit Area 		Educator
Tahoe Mountain Scho
02/19/2016 - 14:30
Snowpack Observation 		Grass Lake
Luther Pass Area (including Job and Freel) 		Educator
Lake Tahoe Community College - Wilderness Educati
01/21/2018 - 16:07
Snowpack Observation 		Andesite Peak
Donner Summit Area 		Educator
Tahoe Mountain Scho
12/25/2020 - 13:15
Snowpack Observation 		Cabin Creek
Cabin Creek, Deep Creek, or Pole Creek Area 		Educator
West Wind Collecti
01/12/2021 - 11:00
Snowpack Observation 		Castle Peak
Donner Summit Area 		Rounding Dec 11 Facets Educator
West Wind Collecti
02/09/2022 - 13:15
Snowpack Observation 		Bear Valley
Little Truckee Summit Areas 		Blowing snow on the Grills Near Surface facets on a NW aspect @ 7800' Affects of prolonged sun and warming on a southerly aspect @ 8000' Weak upper snowpack structure on a NW aspect @ 7800' another shot of near surface facets Educator
West Wind Collecti

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