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
01/15/2020 - 12:15
Avalanche Observation 		Signal Peak
Donner Summit Area 		Small cliff ban to the lookers right of the affected slope is where I stopped. Public
01/15/2020 - 11:30
Snowpack Observation 		Rose Knob
Mount Rose Area 		Consistent setup in this area. 4-6'' of recent storm snow on top of Jan 4 rain crust. Weak faceted snow around this rain crust. Ski cuts on small wind loaded test slopes produced no results. Cornices were reactive, but no signs of wind slab failure on slope. Forecaster
01/15/2020 - 11:00
Snowpack Observation 		Frog Lake
Carson Pass Area 		In a near treeline ridge area, the 1/4 rain crust was still on the surface. Shooting cracks on a firm windslab. Thickness of wind slab (there were soft near surface facets below). Near the lowest point of our tour (around 8000 feet and well below treeline) there were pockets of wind slab. Professional Observer
01/15/2020 - 11:00
Snowpack Observation 		Rubicon Peak
West Shore Area 		The only cracking observed was on undercut slopes Public
01/14/2020 - 13:00
Snowpack Observation 		Peaklet South East of Quail Lake
West Shore Area 		Public
01/14/2020 - 12:00
Snowpack Observation 		Tamarack - Fireplug Saddle
Mount Rose Area 		Soft Wind Slabs Public
01/14/2020 - 12:00
Snowpack Observation 		Silver Peak
Cabin Creek, Deep Creek, or Pole Creek Area 		Moderate to intense drifting snow onto N side of the E ridge of SIlver Pk. Lower end of drifting amounts experienced today. Cracking down to Jan 4 layer while breaking trail in wind protected below treeline terrain. Cracking down to Jan 4 layer while breaking trail in wind protected below treeline terrain. Forecaster
01/14/2020 - 11:30
Snowpack Observation 		Rubicon Peak
West Shore Area 		Wind textured snow and blowing snow Cracking Re-loaded skin track Professional Observer
01/13/2020 - 12:45
Snowpack Observation 		Silver Peak
Cabin Creek, Deep Creek, or Pole Creek Area 		Cracking on an undercut skin track. Guide
Tahoe Mountain Scho
01/13/2020 - 12:00
Snowpack Observation 		Andesite Peak
Donner Summit Area 		Active wind loading continuing over the higher ridges and peaks. Cracking on new cornice formation. Minor cracking in newly forming wind slabs today. Recent storm snow on top of the Jan 4 rain crust. NE aspect at 7800' in open treed location. Forecaster
01/12/2020 - 20:15
Snowpack Observation 		Relay drainages
Mount Rose Area 		Public
01/12/2020 - 15:30
Snowpack Observation 		Mt. Judah
Donner Summit Area 		Wind blown snow coming over the ridge on a near treeline slope. Cornices building above Wildflower Ridge Forecaster
01/12/2020 - 14:00
Snowpack Observation 		Blue Lakes
Carson Pass Area 		Professional Observer
01/12/2020 - 13:15
Snowpack Observation 		Castle Ridge
Donner Summit Area 		Clouds moved in around noon and the ceiling dropped as low as 8000 feet. Wind was moving snow around over ridges and creating wind slab. Cornice chunks broken by a ski kick, but no propagation on slope below. Professional Observer
01/12/2020 - 13:15
Avalanche Observation 		Johnson Canyon
Donner Summit Area 		Public

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