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
12/30/2021 - 09:00 Mt Tallac Desolation Wilderness Area (including Emerald Bay) Snowpack Observation Large cracking of cornice with redline outline downhill piece Large crack at least 12’ deep Wind and blowing snow on Tallac Public
12/29/2021 - 14:00 Powderhouse Peak Luther Pass Area (including Job and Freel) Snowpack Observation Settlement cones and cracking were visible throughout the area. At the very top of Powderhouse there was minor cracking one the most wind loaded features. Earlier in the day blowing snow and cloud cover obscured the views above treeline, but the wind reduced and visibility improved later. First pocket of blue. Someone has impressive snow monster skills. Professional Observer
12/29/2021 - 12:45 Tamarack Peak Mount Rose Area Avalanche Observation Small, 4-inch-deep, soft wind slab avalanche triggered from my ski track about 20 ft away. 6-inch deep soft wind slab triggered by a ski cut on this test slope. 3-4 inch deep wind slab triggered by a ski cut on this wind-loaded test slope. Rimed trees along the E Ridge of Tamarack. Forecaster
12/29/2021 - 12:12 Johnson Canyon Donner Summit Area Avalanche Observation Side view of small wind slab Top view of small wind slab shooting crack on small test slope Educator
West Wind CollectivehW
12/29/2021 - 12:00 South Camp Peak East Shore Area Snowpack Observation Professional Observer
12/29/2021 - 12:00 Waterhouse Peak Luther Pass Area (including Job and Freel) Snowpack Observation A very small, shallow wind slab on a test slope near the summit of Waterhouse It took my whole probe to measure height of snow near the summit: 300cm. Guide
Alpenglow ExpeditionshA
12/29/2021 - 11:00 Incline Peak Mount Rose Area Snowpack Observation Kicking off cornice on test slope triggered small D1 wind slab avalanche with a 2" crown Kicking off cornice on test slope triggered small D1 wind slab avalanche with a 2" crown Naturally occurring cracks within the new storm snow on a convex rollover (trigger point) Skin track refilled after a few hours out Guide
Alpenglow ExpeditionshA
12/29/2021 - 11:00 Hidden Peak West Shore Area Avalanche Observation Public
12/28/2021 - 14:30 Armstrong Connector Luther Pass Area (including Job and Freel) Snowpack Observation Small roller balls from afternoon warming on W aspect Multiple greyish layers all throughout the snowpack in the Caldor burn zone Public
12/28/2021 - 12:00 Hidden Peak West Shore Area Snowpack Observation Settlement cones around trees indicating consolidation in the new snow. Wind textures and drifts near the summit of Hidden Peak ECTN on a wind-loaded test slope near the summit of Hidden Peak Ski cuts and kicks on wind loaded test slopes near the summit of Hidden Peak would triggere small cornice failures, but they did not produce any signs of instability on the slopes below. Wind affected snow surfaces existed in some open below treeline areas as well. Forecaster
12/28/2021 - 12:00 Silver Peak Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Looking up towards Silver Peak Small avalanche in trees (center photo) partially covered by blowing snow Wind textured snow downslope off of ridge on N aspects from W winds Wind scouring on ridge back to previous rain crust Forecaster
12/28/2021 - 11:00 N of Incline Village below Rose Knob Mount Rose Area Snowpack Observation Public
12/27/2021 - 14:47 Cowboy Hat Luther Pass Area (including Job and Freel) Snowpack Observation Break in the weather late in the day. Variable wind slab thicknesses and densities 4f-1F-P. Planar releases of wind slabs. Large shooting crack, this is deeper than it looks. Waist deep skin track. Widow makers in the Caldor burn area. Deeper tree wells starting to form. Wind textured surfaces below tree line. Professional Observer
12/27/2021 - 13:30 Silver Peak Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Thigh to waist deep trail breaking Intense blowing snow in open BLT with wind texture   Blowing snow refilling skin track in 30-60 minutes Settlement cones around trees Forecaster
12/27/2021 - 06:20 thunder cliffs Sawtooth Ridge to Tahoe City Avalanche Observation Public

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