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
12/14/2020 - 12:00
Snowpack Observation 		Lower Round Top
Carson Pass Area 		Professional Observer
03/31/2018 - 14:30
Snowpack Observation 		Donner Peak
Donner Summit Area 		Guide
Tahoe Mountain Scho
04/04/2021 - 12:00
Snowpack Observation 		The Sisters
Carson Pass Area 		Firm and textured snow surface as we gained our high point at The Sisters. As we lost elevation, the snow became punchy and unsupportable, with many turns resulting in deep trenches. Not much snow remaining on steep, sunny aspects in this area. A few roller balls were observed initiating from rocks. Several cornices in the area appeared threatening. Professional Observer
03/15/2023 - 15:00
Snowpack Observation 		Deep Creek
Cabin Creek, Deep Creek, or Pole Creek Area 		Public
12/22/2019 - 12:00
Snowpack Observation 		Rubicon Peak
West Shore Area 		Forecaster
04/09/2021 - 11:00
Snowpack Observation 		Mt. Judah
Donner Summit Area 		Multiple loose wet avalanches and cornice fall over the last week Superficial refreeze with punchy conditions in the shade at 10:45am on south aspect This slope was snow covered 1 week ago. Forecaster
03/16/2023 - 12:58
Avalanche Observation 		Tallac
Desolation Wilderness Area (including Emerald Bay) 		Public
12/23/2019 - 14:15
Snowpack Observation 		Rubicon
West Shore Area 		Variation in snow density within the 12 inches of new snow Very minimal cracking within the new snow near the Rubicon summit. Public
12/03/2022 - 11:00
Snowpack Observation 		Crater Lake
Carson Pass Area 		Professional Observer
12/18/2020 - 12:00
Snowpack Observation 		Bear Valley
Bear Valley Area 		Public
04/15/2018 - 09:30
Snowpack Observation 		Andesite Peak
Donner Summit Area 		Increasing cloud cover over the Sierra Crest at 9:30 am. One inche of surface wet snow on ESE aspect at ~8,100' at 9:30 am. Forecaster
04/16/2021 - 10:00
Snowpack Observation 		Black Butte
Carson Pass Area 		Consistent results on test slopes at the very shallow new/old interface Consistent results on test slopes at the very shallow new/old interface Consistent results on test slopes at the very shallow new/old interface Doggie initiated roller balls Melting snowpack on an E aspect at 8500ft Cloud cover building over Red Lake and Stevens Peaks. Patch skiing season on their S and W aspects Professional Observer
03/20/2023 - 11:20
Avalanche Observation 		Stevens Peak
Carson Pass Area 		Public
12/27/2019 - 12:30
Avalanche Observation 		west of Relay peak and "Bronco chutes"
Mount Rose Area 		Bronco Chute Public
12/04/2022 - 14:00
Avalanche Observation 		Relay Peak
Mount Rose Area 		Public

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