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 Region Observation Type Photos Snowpack, Avalanche, Weather Videos Snowpit videos (tests, etc) Observation made by
10/29/2021 - 09:33 Tamarack Peak Mount Rose Area Snowpack Observation Ski and foot pen in an open area Open creeks and obstacles Public
10/29/2021 - 14:00 Castle Peak Donner Summit Area Snowpack Observation Public
11/01/2021 - 12:20 Relay Peak Mount Rose Area Snowpack Observation Supportable corn on E aspect terrain. 2.5 foot snowpack, stairstep on the left end of the column shows the upper near surface facet layer. Creeks in this area are a mix of open and covered. Forecaster
11/02/2021 - 11:50 Castle Peak Donner Summit Area Snowpack Observation Castle Rd at the gate. 2 feet of snow here a week ago. Snowcover improved above 7,400'. Forecaster
11/03/2021 - 11:15 Tamarack Peak - Far East Ridge Mount Rose Area Snowpack Observation Developing near surface facet layer that gave CT-4 SC results. Shaded terrain where a hand pit and CT gave structure and sudden collapse CT result similar to pit location. Location of shaded terrain where a hand pit and CT gave structure and sudden collapse CT result similar to pit location. Warm day at elevation with robust inversion clouds still holding over Lake Tahoe at midday. Forecaster
11/05/2021 - 11:00 Elephant's Hump Carson Pass Area Snowpack Observation Examining the snow below Elephant's Hump. Snow height and structure. Elephant's Back Elephant's Back and Roundtop Frog Lake and the dry southern slopes of Red Lake Peak Lake Winnemucca Professional Observer
11/07/2021 - 11:49 Tamarack peak Mount Rose Area Snowpack Observation Public
11/08/2021 - 13:00 Porthole Gap Carson Pass Area Snowpack Observation Professional Observer
11/09/2021 - 12:00 Tamarack Peak Mount Rose Area Snowpack Observation Small whumpfing noise on N aspect @9200' CT's with sudden collapse results on faceted layer. Snowpit location with new snow visible above line and old faceted snow below Rain Crust line. Forecaster
11/09/2021 - 13:00 Elephants Back Carson Pass Area Snowpack Observation Professional Observer
11/09/2021 - 15:00 Peak 8620' Blackwood Canyon or Ward Canyon Area Avalanche Observation Looking up to crown line Crown and run. Looking downslope, avalanche ran 400'. Cohesive firm snowpack adjacent to avalanche.  P to I hard layering. Wind slab off of ridge with ^ shape propagation Looking South to Barker Peak and Barker Pass Forecaster
11/09/2021 - 15:26 Elephants back Carson Pass Area Snowpack Observation 26 cm of new snow Leeward side snow deposits Windward side minimal snow Yesterdays ice skating rink pre storm Guide
Blackbird Mountain GuideshB
11/10/2021 - 08:20 Thunder Mountain Carson Pass Area Snowpack Observation Public
11/10/2021 - 12:00 Castle Peak Donner Summit Area Snowpack Observation Well bonded snowpack with no layers of concern at this point. Rain runnels up to 8000'. Many open water areas and flowing creeks. Castle Valley Road has thin snow coverage and quickly melting out. Forecaster
11/12/2021 - 11:00 East Ridge of Tamarack Peak Mount Rose Area Snowpack Observation ECTN below the old rain crust on a developing layer of weaker snow Breakable crust on shaded aspects Soft wet surface snow on sunny aspects Lots of exposed bushes, areas of dirt, and creeks Clouds iand fog indicating inversion conditions until about 11am. Forecaster

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