These observations document past conditions at a small and variable scale. They are not too 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
01/12/2021 - 14:30 Chickadee Ridge Mount Rose Area Snowpack Observation Public
01/12/2021 - 11:30 Red Lake Peak Carson Pass Area Snowpack Observation First sign of wind affected snow above 8000'. very small thin windslabs found in specific terrain. Snow transporting across the slope by saltation. Pit Profile @ 8700' on North aspect. Professional Observer
01/12/2021 - 11:00 Castle Peak Donner Summit Area Snowpack Observation Rounding Dec 11 Facets Educator
West Wind Collective
01/12/2021 - 10:30 Tamarack Peak Mount Rose Area Snowpack Observation Thick mid to high level cloud cover that later began to thin around midday. Thick mid to high level cloud cover that later began to thin around midday. Minor amounts of blowing snow during the strongest gusts. Forecaster
01/12/2021 - 08:45 Powderhouse Luther Pass Area (including Job and Freel) Snowpack Observation Public
01/11/2021 - 11:30 Peak 9269' West Shore Area Snowpack Observation Forecaster
01/10/2021 - 13:30 Deep Creek Canyon Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Guide
Tahoe Mountain School
01/10/2021 - 11:15 Saddle below Donner Peak Donner Summit Area Snowpack Observation Rounding facets Guide
Alpenglow Expeditions
01/10/2021 - 10:15 Incline Peak Mount Rose Area Snowpack Observation NE wind effect snow surface texture near treeline in foreground and beyond. NE wind effect snow surface texture below treeline. Forecaster
01/09/2021 - 12:30 Flagpole Echo Summit Area Snowpack Observation 3-5mm  surface hoar below 7300 above supportable ice crust. Pit profile 1 @ 6800' E facing slope  A change from surface hoar to a mix of grapple/ice pellets starting @ 7500' and up to saddle. Pit profile 2 @ 7800' NE facing slope. Preserved layer of graupel under thin breakable rain crust above 7800' Rain crust at top of saddle of Flagpole. Wind effect at top of saddle of Flagpole. Professional Observer
01/09/2021 - 12:00 Euer Valley/Donner Ridge Donner Summit Area Snowpack Observation Surface hoar was up to 15mm in places Supportable knife hard surface crust SH closeup Wet snow in the trees below 7k’ Public
01/09/2021 - 12:00 Blue Lakes Carson Pass Area Snowpack Observation Professional Observer
01/09/2021 - 12:00 Wildflower Ridge/Judah Donner Summit Area Snowpack Observation Educator
Alpenglow Expeditions
01/09/2021 - 11:15 Mt. Lola Independence Lake Area Snowpack Observation Double cornice feature from SW and NE winds. The snowpack continues to settle and gain strength. Surface wet snow on an ESE aspect at ~8,000'. Forecaster
01/08/2021 - 14:00 Silver Peak Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Blowing snow along surface 7200', NW aspect, HS=90cm. (Note: hand hardness obs on sunny pit wall for easier class viewing given our terrain at this location.) Rainbow! Guide
Alpenglow Expeditions

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