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
02/18/2016 - 07:00
Avalanche Observation 		Silver Peak
Cabin Creek, Deep Creek, or Pole Creek Area
Forecaster
03/14/2017 - 13:00
Avalanche Observation 		West Ridge of Mt. Tallac
Desolation Wilderness Area (including Emerald Bay)
Loose wet avalanche size D1.5-D2 triggered by natural cornice collapse.
 Forecaster
12/08/2016 - 12:00
Snowpack Observation 		Tamarack Peak
Mount Rose Area 		Shooting cracks on a wind loaded test slope just before a wind slab failure on that slope.The next ski kick triggered the rest of the wind slab. Forecaster
02/25/2012 - 00:30
Snowpack Observation 		Silver Peak
Cabin Creek, Deep Creek, or Pole Creek Area 		Forecaster
03/09/2010 - 11:30
Snowpack Observation 		Hidden Peak
West Shore Area 		Forecaster
01/24/2018 - 12:00
Snowpack Observation 		Rubicon Peak
West Shore Area 		Blowing snow below treeline.Blowing snow near summit of Rubicon Peak. Fresh wind slabs below summit pinnacle on E aspect.Signs of small wind slabs forming with redistribution of old snow on the ground.Obvious plumes of blowing snow on Dick's Peak as seen from the saddle on the S side of Rubicon's summit. Forecaster
04/11/2013 - 13:00
Snowpack Observation 		Tamarack Peak
Mount Rose Area 		Forecaster
01/10/2017 - 11:30
Avalanche Observation 		Negro Canyon
Donner Summit Area
Intentially skier trigger wind slab on small test slope
Wind slab failing within storm snow about 4-6'' above the old snow rain crust interface.
 Forecaster
01/29/2022 - 12:30
Snowpack Observation 		Mt. Judah
Donner Summit Area 		Looking uphill from where I dug down to check melt layer depth. Top 50 cm of the HS 130cm snowpack on this S aspect at 7,600' has undergone repeated melt freeze. Forecaster
03/12/2010 - 11:45
Snowpack Observation 		Hidden Peak
West Shore Area 		Forecaster
01/08/2022 - 11:30
Snowpack Observation 		Peak 7,483'
Donner Summit Area 		Snowpit tests in the flank and crown of this recent wind slab avalanche revealed no indications of ongoing instability. Signs of very minor surface wet snow development. Fissures behind large cornices, an impressive 15 to 20 feet deep. Forecaster
03/17/2015 - 12:30
Snowpack Observation 		Castle Peak
Donner Summit Area 		Forecaster
01/07/2015 - 10:45
Snowpack Observation 		Relay Peak
Mount Rose Area 		Forecaster
02/20/2021 - 09:00
Snowpack Observation 		Andesite Peak
Donner Summit Area 		Two small wind slabs, both intentionally triggered. Wind slabs failing on a density change mid height within the wind drifted storm snow. Storm slab cracking while breaking trail. Large grauple at the old/new interface on top of rain crust. More clearing than expected leading to minor snow surface warming. Forecaster
03/06/2014 - 11:30
Snowpack Observation 		Castle Peak
Donner Summit Area 		Forecaster

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