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
02/16/2022 - 10:00 Silver Peak Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation SE aspect cornice and wet snow at about 7,800'. SE aspect cornice and wet snow at about 7,800'. SE aspect wet snow at about 7,400'. Small wind slab in NW aspect near treeline terrain at about 7,900'. Forecaster
02/15/2022 - 12:00 Elephant's Hump Carson Pass Area Snowpack Observation Professional Observer
02/15/2022 - 11:30 Tamarack Peak Mount Rose Area Snowpack Observation A ski cut triggered some short cracking in the wind blown snow on this SW facing test slope, but the wind slab was so soft that it immediately fell apart. Small skier triggered cracking in wind drifted snow. NE winds scouring a NE facing slope and blowing snow over the ridge. Wind scoured area next to a drift of wind-blown snow. ECTN in an area where wind-blown snow had accumulated on top of old weak surface snow (facets). Forecaster
02/15/2022 - 11:00 Lincoln Ridge Yuba Pass Area Snowpack Observation Upper snowpack in wind protected below treeline areas Wind drifted snow up to 1' deep on SW side of ridge from strong NE winds this morning. Northerly aspect with up to 1' of wind blown snow with some NE wind protection. Strong NE winds had already scoured exposed northerly aspects back down to previous crusts. Blowing snow along the top of Lincoln Ridge Forecaster
02/14/2022 - 12:00 Red Lake Peak Carson Pass Area Snowpack Observation Professional Observer
02/14/2022 - 11:00 Mt, Judah Donner Summit Area Snowpack Observation South side of Mt. Judah still holding pretty good snow coverage. Soft snow formed on southerly aspects in the late morning hours providing good conditions. Many aspects were cold and frozen and did not soften during our tour. Looking south along the Sierra Crest Forecaster
02/13/2022 - 14:00 Judah Peak Donner Summit Area Snowpack Observation Guide
Alpenglow ExpeditionshA
02/13/2022 - 12:00 Mount Houghton Mount Rose Area Snowpack Observation Differential snow melt conditions on SE aspect near 9,600'. ~2" of snow softening on SE aspect around 9,600' at Noon. Sign of the times... Mount Houghton summit 10,480'.  Stark contrast between N and S aspects. View from Mount Houghton looking West.  Bare foreground on S facing terrain and snow covered N aspects in the background. Mount Rose S face. Public
02/13/2022 - 12:00 Fourth of July Lake Carson Pass Area Snowpack Observation Looking towards the south faces of the Carson Pass area with Caples Lake in front, L-R: Little Roundtop, Black Butte, then Stevens and Red Lake Peak This photo doesn't capture how overhung the snow was here. I'm assuming some wind and differential melting combo. Looking south at the north faces around Mokelumne Peak (on the right) and a slice of Bear Valley. The south and west face of the Sisters. 4 cm boot penetration on a flat aspect next to Fourth of July Lake Looking up at the varied coverage on the east bowl of Peak 9795 next to Melissa Coray Peak. The more west facing this generally south facing terrain was, the more roughly textured the snow surface was. Professional Observer
02/12/2022 - 12:23 Mount Tallac Desolation Wilderness Area (including Emerald Bay) Snowpack Observation near surface faceting, about 3cms. Significantly deeper in other higher areas heavy glopping closer look at some facets Public
02/12/2022 - 11:00 Jakes Peak West Shore Area Snowpack Observation Snow keeps melting on sun-exposed southerly aspects. Patchy snow coverage at lower elevations on S aspects 1-3 inches of soft wet corn snow on sun exposed SE-S aspects Still plenty of snow on N aspects in Desolation Uneven snow surfaces formed by differential melting. Forecaster
02/11/2022 - 13:30 Iron Mountain Outside of the Forecast Area Snowpack Observation Snow Pit Compression Column Column broke at weaker layer Public
02/11/2022 - 13:05 Pickett Peak Luther Pass Area (including Job and Freel) Snowpack Observation Small debris pile of wet surface snow failing on facets below. Well preserved surface hoar intact in isolated areas. Shovel tilt test with planar crust above facets. 2-3" of boot pen @ 8500' @ 1330. Shallow snow on south aspects of Freel Peak. Professional Observer
02/11/2022 - 12:00 Stevens Peak Carson Pass Area Snowpack Observation Percolation tubs indicating water draining vertically through the snowpack. Uneven snow surfaces caused by differential melting. Small pinwheel triggered by a ski cut on a sunny SSE facing slope Variable snow surfaces Shady aspects still hold good snow coverage while snow is melting quickly on the sunny aspects. Forecaster
02/10/2022 - 12:29 Echo Peak Echo Summit Area Snowpack Observation Solar affected "corn flake snow" rode well when warm and loose. Diminishing snow near the summit of Angora Peak. Shallow snow pack in areas is starting to expose rock moats and manzanita bushes. Widespread wind affect across Mt. Ralston. Firm wind affected snow around the summit of Echo. Professional Observer

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