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
02/25/2021 - 13:30
Snowpack Observation 		Castle Valley
Donner Summit Area 		Educator
NORTH AMERICAN SKI TRAINING AND CLIMBI
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
12/21/2019 - 02:00
Snowpack Observation 		judah billboards
Donner Summit Area 		Educator
Alpine Skills International (AS
02/11/2018 - 11:45
Snowpack Observation 		Castle Valley
Donner Summit Area 		Educator
Tahoe Mountain Scho
03/06/2023 - 12:00
Snowpack Observation 		Poulsen Peak
Cabin Creek, Deep Creek, or Pole Creek Area 		Natural activity on E aspect Cornice collapse on N ridgetop S aspect test slope Educator
NORTH AMERICAN SKI TRAINING AND CLIMBI
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
02/05/2023 - 09:30
Avalanche Observation 		Fireplug Trees
Mount Rose Area 		Test slope wind slab stepping down to old snow Close up of small slab avalanche Educator
Tahoe Mountain Scho
02/25/2023 - 14:00
Avalanche Observation 		Donner Canyon
Donner Summit Area 		one of our ECT's, Buried SH layer visible Avalanche crown we suspected was triggered during the day today Buried SH found 77 cm down in the snowpack Educator
Alpenglow Expeditio
12/09/2018 - 11:45
Snowpack Observation 		Castle Peak
Donner Summit Area 		Outlined areas show observed wide spread surface hoar growth of >3mm Educator
Tahoe Mountain Scho
04/20/2019 - 14:15
Snowpack Observation 		Donner Summit
Donner Summit Area 		recent cornice fall on a NE aspect @ 7500 beautiful rightside-up snowpack Educator
Tahoe Mountain Scho
12/03/2017 - 12:00
Snowpack Observation 		Andesite Ridge
Donner Summit Area 		CTE Failure 15-20cm down in the snow packShooting Cracks up to 25 feet in length Educator
Tahoe Mountain Scho
02/04/2022 - 12:00
Snowpack Observation 		Elephants Hump
Carson Pass Area 		Large Surface Hoar Large Surface Hoar 2 Hand Hardness: about 6 cm surface hoar and near surface facets, 1-2cm rain/melt freeze curst, 5-6cm near surface facets, to rounded consolidated snow About 6 cm surface hoar and near surface facets, 1-2cm rain/melt freeze curst, 5-6cm near surface facets Educator
Lake Tahoe Community College - Wilderness Educati
03/20/2023 - 12:30
Avalanche Observation 		North Bowl Castle Peak
Donner Summit Area 		crown of first rider triggered avalanche debris of 1st rider triggered avalanche natural and 2 human triggered avalanches crown of second rider triggered avalanche failure in PST 33/100 end on SH 25 cms down obvious SH layer 20 cms down large buried SH Rime and water ice on trees Educator
NORTH AMERICAN SKI TRAINING AND CLIMBI
03/06/2020 - 15:00
Snowpack Observation 		Powderhouse
Luther Pass Area (including Job and Freel) 		Educator
Lake Tahoe Community College - Wilderness Educati

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