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
12/09/2016 - 12:00
Snowpack Observation 		Alhambra Mine
Carson Pass Area 		Running water at approximately 8800 feet near Stevens Peak.Rime or snow dusting southwest aspect of Stevens Peak.Approximately 3mm striated facets at base of snowpack in this location. Professional Observer
12/22/2017 - 11:00
Snowpack Observation 		Alhambra Mine gulch
Carson Pass Area 		Variable conditions on a north east facing slopeOld crown below east facing ridgePit adjacent to old crownCrust on top of NSFs failed upon isolation or a single CT tapECTs didn't propagateSastrugi from previous east windIceMeiss Meadows Professional Observer
04/23/2023 - 19:15
Snowpack Observation 		Allison Ridge - Rose Knob Peak
Mount Rose Area 		Cracking and recent collapses of the cornice Public
12/20/2020 - 12:45
Snowpack Observation 		Along approach to My. Reba
Bear Valley Area 		Large rollet balls or pinwheels visible on west aspect Public
04/08/2023 - 12:00
Avalanche Observation 		Alpine Meadows
Five Lakes Area 		Public
02/18/2016 - 07:05
Avalanche Observation 		Alpine Meadows Road
Five Lakes Area 		Forecaster
12/04/2010 - 16:10
Snowpack Observation 		Alpine Mine
Carson Pass Area 		Professional Observer
05/07/2022 - 12:00
Avalanche Observation 		Alpine/Keyhole Area
West Shore Area 		Public
01/29/2018 - 09:00
Snowpack Observation 		Anderson Peak
Donner Summit Area 		Public
03/11/2019 - 10:00
Avalanche Observation 		Anderson Peak
Cabin Creek, Deep Creek, or Pole Creek Area 		Wind slab avalanche size D1 on NE aspects triggered by intentional cornice collapse. ECTP-18 down 40 cm on WNW aspect. Fresh wind slab P hard aver 4F-. Melt freeze crust on solar aspects from March 10 at about 7,500'. Forecaster
01/10/2014 - 15:30
Snowpack Observation 		Anderson Peak
Donner Summit Area 		Public
02/25/2011 - 20:33
Avalanche Observation 		Anderson Peak
Donner Summit Area
Public
01/19/2014 - 16:15
Snowpack Observation 		Anderson Peak
Donner Summit Area 		Public
12/14/2018 - 10:30
Snowpack Observation 		Anderson Ridge
Donner Summit Area 		High winds but minimal local ridge top transport wind scoured and side loading below the ridge thin and non-reactive wind loading at 10:30a Public
03/27/2020 - 10:45
Avalanche Observation 		Anderson Ridge
Donner Summit Area 		Public

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