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
01/06/2018 - 12:30

Snowpack Observation
Andesite Ridge

Donner Summit Area
Breakable Crust on Andesite RidgeCastle Peak with lift clouds around 12 30 Educator

Tahoe Mountain Scho
02/25/2017 - 10:30

Snowpack Observation
Donner Ridge

Donner Summit Area
Educator

Donner Summit Avalanche Semina
12/10/2019 - 10:00

Snowpack Observation
Thopson Peak

Luther Pass Area (including Job and Freel)
Wind scouring on surface. 2-3cm breakable crust. Educator

Lake Tahoe Community College - Wilderness Educati
01/26/2021 - 11:00

Snowpack Observation
Johnson Canyon

Donner Summit Area
Educator

Blackbird Mountain Guid
01/05/2022 - 22:31

Snowpack Observation
Castle/Andesite Peak

Donner Summit Area
Educator

Alpenglow Expeditio
01/08/2016 - 07:00

Snowpack Observation
W end Boreal Ridge above Central Sierra Snow Lab

Donner Summit Area
Educator

Donner Summit Avalanche Semina
01/07/2022 - 12:00

Snowpack Observation
Powderhouse

Luther Pass Area (including Job and Freel)
Pic 1: Clearly identifiable decomposing rain crust between 60 and 61 cm. Pic 2: ECTX but when I pulled from the back with my shovel it did release but with a lot of pressure on the Dec 10 layer (60cm). Educator

Lake Tahoe Community College - Wilderness Educati
12/21/2019 - 02:00

Snowpack Observation
judah billboards

Donner Summit Area
Educator

Alpine Skills International (AS
12/12/2020 - 15:00

Snowpack Observation
Andesite Peak

Donner Summit Area
Educator

Alpenglow Expeditio
03/27/2020 - 10:30

Snowpack Observation
N Aspect of Echo Peak

Echo Summit Area
Surface Hoar on the uptrack Large Surface Hoar on a small tree on the uptrack CTM(20) sudden planar at 59cm down Buried Surface Hoar at 59cm down Buried Surface Hoar at 59cm down Near Surface Facets at 150cm down below 1-finger hard snow Near Surface Facets at 150cm down Educator

Lake Tahoe Community College - Wilderness Educati
03/29/2017 - 11:30

Snowpack Observation
South Side Castle Peak

Donner Summit Area
Educator

Sierra Nevada Colle
12/09/2018 - 13:15

Snowpack Observation
E of Boreal ski area

Donner Summit Area
Educator

Donner Summit Avalanche Semina
12/10/2017 - 12:10

Snowpack Observation
Castle Pass

Donner Summit Area
Educator

Tahoe Mountain Scho
03/10/2018 - 15:15

Snowpack Observation
Snowshed Wall

Donner Summit Area
Runnels Heavy snow at times Educator

Tahoe Mountain Scho
02/04/2018 - 14:00

Snowpack Observation
SW Face of Basin Peak

Donner Summit Area
Educator

Tahoe Mountain Scho

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