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
12/16/2018 - 16:30
Snowpack Observation 		Below Tamarack Peak
Mount Rose Area 		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
12/08/2018 - 14:15
Snowpack Observation 		Johnson Canyon
Donner Summit Area 		Visual outline of the snowpack on NE Aspect @ 7300' 2-4mm Surface Hoar, these grains seemed to have some sort of icey deposit on them Side profile of current Surface Hoar Cornice cuts produced small loose dry avalanches Educator
Tahoe Mountain Scho
12/14/2021 - 11:15
Snowpack Observation 		Johnson Canyon
Donner Summit Area 		Educator
West Wind Collecti
12/12/2020 - 15:00
Snowpack Observation 		Andesite Peak
Donner Summit Area 		Educator
Alpenglow Expeditio
12/30/2018 - 12:30
Snowpack Observation 		Tamarack Peak
Mount Rose Area 		Exposed dirt and Knife hard sastrugi on Hour Glass Educator
Tahoe Mountain Scho
01/24/2018 - 11:00
Avalanche Observation 		Lower Andesite Ridge
Donner Summit Area
Educator
Tahoe Mountain Scho
12/29/2019 - 13:00
Snowpack Observation 		Mt. Judah
Donner Summit Area 		light blowing snow over this cornice below treeline Educator
Alpenglow Expeditio
12/31/2017 - 13:14
Snowpack Observation 		Castle Pass
Donner Summit Area 		Educator
Tahoe Mountain Scho
12/29/2020 - 12:15
Snowpack Observation 		Stanford Rock
Blackwood Canyon or Ward Canyon Area 		Surface hoar in open sheltered terrain (all elevations) PST 80/100 (End) @ 70cm Hand hardness + layers of concern Educator
Tahoe Mountain Scho
02/02/2021 - 13:30
Snowpack Observation 		Powderhouse
Luther Pass Area (including Job and Freel) 		Educator
Lake Tahoe Community College - Wilderness Educati
03/07/2021 - 09:30
Avalanche Observation 		Shirley Canyon
Cabin Creek, Deep Creek, or Pole Creek Area 		Terrain where surface instability occurred Close Up of surface instability Another close up of surface instability Educator
Alpenglow Expeditio
01/13/2019 - 15:30
Snowpack Observation 		Donner Peak
Donner Summit Area 		Educator
Tahoe Mountain Scho
02/24/2017 - 10:45
Snowpack Observation 		Andesite Peak
Donner Summit Area 		Educator
Donner Summit Avalanche Semina
01/16/2016 - 12:00
Snowpack Observation 		Below Becker Ridge
Echo Summit Area 		Rain runnelsImpressive snow shedding off treesGraupelSignificant amounts of graupel Educator
Lake Tahoe Community College - Wilderness Educati

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