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
11/11/2017 - 09:40
Snowpack Observation 		SE Andesite Peak
Donner Summit Area 		Public
11/10/2017 - 13:00
Snowpack Observation 		Andesite Peak
Donner Summit Area 		Public
11/09/2017 - 12:00
Snowpack Observation 		Castle Peak
Donner Summit Area 		Cornice sections above test slopes easily collapsed with intentional efforts. No signs of wind slab instability revealed on the test slope below.Supportable snow cover at ~7,900' between the Grub Hut and Castle Pass. Forecaster
11/08/2017 - 11:15
Snowpack Observation 		Lincoln Ridge
Yuba Pass Area 		Snowpit location with 50cm snow depth, some previous wind loading.Snowcover of about 14 inches at about 7,350'FS Rd 12 at 6,900'. Rd plowed for logging operations. Forecaster
11/07/2017 - 11:30
Snowpack Observation 		Barker Peak
Blackwood Canyon or Ward Canyon Area 		Snowpit locationN aspect snowcover of 11 inches at ~8,000'. Forecaster
11/04/2017 - 11:00
Snowpack Observation 		Castle Pass/Andesite Ridge
Donner Summit Area 		10 to 12 in of new snow on the Castle Rd at 7,400'.Base of Casltle Pass, 12 in of new snow on bare ground. New snow right side up.Andesite Ridge ~8,000', 14 inches of new snow.Andesite Ridge ~8,000', minimal wind transport. Forecaster
11/03/2017 - 11:00
Snowpack Observation 		East Ridge of Relay Pk
Mount Rose Area 		Up to 10cm (4in) of old snow facets with thin surface crust. Numerous interruptions/discontunities of the basal layer.Faceted snow from underneath 0.5-1 cm thick surface melt-freeze crust. Forecaster
10/30/2017 - 12:00
Snowpack Observation 		Round Top
Carson Pass Area 		Forecaster
05/07/2017 - 09:10
Snowpack Observation 		Tamarack Peak
Mount Rose Area 		Variable conditions with scoured crusts and dense "punchy" wind blown snow.Poor visibility and variable snow. Public
05/05/2017 - 10:00
Snowpack Observation 		Castle Peak
Donner Summit Area 		Ankle deep wet snow on a S aspect just before 9 am. Boot top deep wet snow on a N aspect near 8800 ft. at 10:00 amMid shin deep wet snow at 11 am. Forecaster
04/23/2017 - 14:00
Snowpack Observation 		Castle Peak
Donner Summit Area 		Marginal at best overnight refreeze. 2-3'' 1F crust at 10am on S aspect at 7400'. Natural cornice collapse at 8000', E aspect, observed at 2:45pm.Loose wet avalanche intentionally skier triggered on SE aspect at 7800'.Previous loose wet avalanches on N side of Castle Peak. Guide
Tahoe Mountain Scho
04/23/2017 - 13:15
Snowpack Observation 		Castle Peak
Donner Summit Area 		Public
04/23/2017 - 10:30
Avalanche Observation 		South side of Rose
Mount Rose Area 		Public
04/22/2017 - 12:30
Avalanche Observation 		Rose Knob, Third Creek
Mount Rose Area
Public
04/22/2017 - 12:00
Avalanche Observation 		Lower Rose Knob
Mount Rose Area 		Public

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