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
03/02/2017 - 11:00
Snowpack Observation 		Rose Knob
Mount Rose Area 		Wet loose avalanche skier triggered into gully terrain trap. E aspect, 7650', 11:56am.Bed surface of loose wet.Looking up at Rose Knob. Previous wet loose avalanches in gullies. Forecaster
03/01/2017 - 14:30
Snowpack Observation 		Becker Peak
Echo Summit Area 		Large intentionally skier-triggered cornice collapse. The impact and weight of the cornice did not produce cracking in the wind-loaded test slope. Ski poles are in the photo for scale.Runnels indicating warming in the snowpack on a S aspect.Small roller balls on a S aspect above Echo Lake near a cliff band. Forecaster
03/01/2017 - 14:00
Avalanche Observation 		above buck lake
West Shore Area 		wind loaded slab wind loaded slabs Public
03/01/2017 - 12:00
Snowpack Observation 		Mt. Tallac
Desolation Wilderness Area (including Emerald Bay) 		Recent natural roller ball activity on SE aspect around 8,000'. Some from today, some from previous days. Forecaster
02/28/2017 - 12:00
Snowpack Observation 		Ebbetts Pass
Ebbetts Pass Area 		Professional Observer
02/28/2017 - 09:00
Snowpack Observation 		Negro Canyon
Donner Summit Area 		Surface hoar on a N-NW aspect at 9am @ 7200 ft. Ski kicks triggered failures in the cornices but the cornice pieces did not trigger wind slab failures. Forecaster
02/27/2017 - 12:00
Snowpack Observation 		Flagpole Peak
Echo Summit Area 		Late morning view of south east face of Flagpole peak, showing previous natural slide activity.Winds were transporting snow and largely covering up the skin track between laps.A natural loose dry avalanche on a steep slope just below the summit ridge. Evidence of wind altered snow just below the summit. Sastrugi on a low elevation ridge in early afternoon. Professional Observer
02/27/2017 - 10:00
Avalanche Observation 		Peak 9269' SE Aspect
West Shore Area
Public
02/27/2017 - 09:00
Avalanche Observation 		Peak 9269'
West Shore Area
E to SE aspect, 9.000'
Skin track barely visible exiting upper climbers right just below crown.
Skin track barely visible exiting upper climbers right just below crown.
Debris piles.
 Forecaster
02/26/2017 - 13:00
Snowpack Observation 		Shallenberger Ridge
Donner Summit Area 		3-5mm surface hoar, 7k', North aspect Guide
Alpenglow Expeditio
02/26/2017 - 12:37
Avalanche Observation 		Rose Knob / Junior Knob
Mount Rose Area 		Public
02/26/2017 - 12:00
Snowpack Observation 		Indian Valley
Ebbetts Pass Area 		Professional Observer
02/26/2017 - 11:15
Avalanche Observation 		Echo Peak
Echo Summit Area
Small part of the cornice broke off - far upper left of photo.
The debris made it over the next rollover.
Avalanche path. I had noticed tracks in this area on my hike up.
 Public
02/26/2017 - 11:00
Avalanche Observation 		Carpenter Ridge
Independence Lake Area
Test slope cracking of easy to trigger but very shallow wind slab.
Propagation up to 30' with shallow wind slab.
Triggered wind slab up to 4 inches thick on top of older wind slab from 24+ previous.
Some wind transport refill of skin track after 3 hrs, well below treeline on Carpenter Rd on N aspect at 8,040'.
 Forecaster
02/25/2017 - 13:30
Avalanche Observation 		Incline peak ENE bowl approx 9000 ft
Mount Rose Area
Public

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