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
02/05/2017 - 12:00
Snowpack Observation 		Tram Ridge / Shirley canyon
Cabin Creek, Deep Creek, or Pole Creek Area 		Rain runnels below 7k'Scouring and loadingSmall crack in skin track Guide
Alpenglow Expeditio
02/05/2017 - 09:00
Avalanche Observation 		Jakes Peak
Desolation Wilderness Area (including Emerald Bay)
Public
02/05/2017 - 08:00
Avalanche Observation 		Upper Spencer's Lake
Outside of the Forecast Area
Runout
Crown
 Public
02/04/2017 - 14:30
Snowpack Observation 		Silver Peak
Cabin Creek, Deep Creek, or Pole Creek Area 		ECTP 16 28cm below the surface at a density change between a dense heavy wind slab and softer storm snow2m long ECTN 16 on the same layer as the ECTPRain runnels and wet sticky snow existed on slopes below 7000 ft. Settlement cracks around a tree at 7500 ft. on a N aspect Forecaster
02/04/2017 - 14:00
Snowpack Observation 		Andesite Peak
Donner Summit Area 		Clouds starting to break up after 3pm. Guide
Tahoe Mountain Scho
02/04/2017 - 14:00
Snowpack Observation 		North aspect, south of Peter Grub Hut
Donner Summit Area 		Public
02/03/2017 - 13:00
Snowpack Observation 		Donner Peak
Donner Summit Area 		Wind slab cracking on an undercut test slopeShooting crack on a wind loaded test slope Forecaster
02/03/2017 - 12:00
Snowpack Observation 		Powderhouse
Luther Pass Area (including Job and Freel) 		Cracking within the storm snow on the skin track Public
02/03/2017 - 11:00
Snowpack Observation 		East Ridge Tamarack Peak
Mount Rose Area 		Triggered wind slab at 9100', N aspect, 6-8'' deep. Debris from intentionally skier triggered wind slab.Triggered wind slab, N aspect, 9100', 8-12'' deep.ECTP-11. 14'' deep, N aspect, 9200' in wind loaded location. Forecaster
02/02/2017 - 11:00
Avalanche Observation 		Andesite Peak
Donner Summit Area
Storm Slab. 4'' deep, 7900', NE aspect.
Debris from storm slab (D1).
Storm slab, 4'' deep, 7900', NE aspect.
Wind Slab, 4-8'' deep, 8100', E aspect, 38 degree slope.
 Forecaster
02/01/2017 - 12:00
Snowpack Observation 		Blackwood Ridge
Blackwood Canyon or Ward Canyon Area 		Surface hoar on thin crust in large open areas well below treeline.Overrunning cloud cover associated with incomming storm system. Forecaster
01/31/2017 - 14:00
Snowpack Observation 		Horsetail Falls
Echo Summit Area 		Public
01/31/2017 - 12:30
Snowpack Observation 		Waterhouse Peak
Luther Pass Area (including Job and Freel) 		Very minor wind transport of old snow under SW wind gusts.Less than 1 cm thick melt freeze crust on S aspect at 9,400'. Forecaster
01/30/2017 - 12:00
Snowpack Observation 		Jobs Sister
Luther Pass Area (including Job and Freel) 		The inversion layer of Lake Tahoe was clearly visible from the warmer higher elevations.These warmer areas were producing impressive Surface Hoar. Zoomed in large Surface Hoar.During the afternoon, sunny aspects around 10,000 feet steep rolls consistently produced wet slides in response to ski turns.During the afternoon, sunny aspects around 10,000 feet steep rolls consistently produced wet slides in response to ski turns. Professional Observer
01/30/2017 - 12:00
Snowpack Observation 		Rubicon Peak
West Shore Area 		Signs of 2+ feet of storm snow settlement. Forecaster

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