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
11/23/2010 - 13:53
Avalanche Observation 		Wildflower Ridge
Donner Summit Area
Forecaster
01/24/2018 - 14:28
Snowpack Observation 		Wildflower Ridge
Donner Summit Area 		Public
01/12/2017 - 12:30
Snowpack Observation 		Wildflower Ridge
Donner Summit Area 		Fairly large sections of cornice along the ridge.Small loose dry triggered by intentional cornice collapse. Forecaster
12/15/2014 - 14:30
Avalanche Observation 		Wildflower Ridge
Donner Summit Area
Public
01/11/2016 - 11:00
Snowpack Observation 		Wildflower Ridge
Donner Summit Area 		Guide
Tahoe Mountain Scho
12/17/2014 - 09:15
Snowpack Observation 		Wildflower Ridge
Donner Summit Area 		Public
12/19/2014 - 12:30
Snowpack Observation 		Wildflower Ridge
Donner Summit Area 		Forecaster
12/28/2019 - 09:00
Snowpack Observation 		Wildflower Ridge
Donner Summit Area 		Public
03/11/2018 - 08:00
Snowpack Observation 		Wildflower Ridge
Donner Summit Area 		Public
12/30/2009 - 08:40
Avalanche Observation 		Wildflower Ridge - Mt. Judah
Donner Summit Area
Forecaster
01/11/2020 - 17:00
Avalanche Observation 		Wildflower Ridge / Mt. Judah
Donner Summit Area 		D2 wind slab avalanche on the E face of Judah Wind slab avalanche on Wildflower Ridge Forecaster
01/09/2021 - 12:00
Snowpack Observation 		Wildflower Ridge/Judah
Donner Summit Area 		Educator
Alpenglow Expeditio
02/26/2023 - 11:00
Snowpack Observation 		Willow Creek/Horse Meadow
Luther Pass Area (including Job and Freel) 		Public
01/20/2023 - 09:52
Snowpack Observation 		Wind effect and wind slabs on Mt. Tallac
Desolation Wilderness Area (including Emerald Bay) 		Intermittent waves of cloud cover on the ascent. Hard melt freeze crusts on solar aspects above 7600'. Settlement cracks in below and near tree line terrain. Small wind slab release on ski cut. Planar result on shovel shear on wind slab. Buried surface 30cm down @ pit location. Moderate to strong east winds transporting snow off the summit. Professional Observer
11/14/2020 - 13:00
Snowpack Observation 		Winnemucca Lake
Carson Pass Area 		Thin (4-8) coverage in meadow below Winnemucca Lake. Elephants Back in backgorund, completely wind-scoured. Average depiction of snowdepth around Winnemucca Lake. About a foot deep. Some small wind slabs formed on various east facing slopes. Deepest snowdrift I saw on the ridge between Winnemucca Lake and Roundtop Lake. Only about 24-30 inches deep. Most of ridge was wind scoured. Public

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