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
04/08/2023 - 10:50
Snowpack Observation 		Relay Peak
Mount Rose Area 		Natural rollerballs off of rocks on Slab Cliffs, E aspect at around 9,500' at 10:50 am. Natural rollerballs off of trees on far southern Relay Peak, E aspect at around 9,700' at 11:45 am. I ski cut and traversed several wind loaded test slopes today, this was the only one I was able to create a fracture on. Forecaster
04/08/2023 - 11:30
Avalanche Observation 		Tamarack Peak
Mount Rose Area 		Public
04/08/2023 - 11:30
Snowpack Observation 		Slide Mountain
Mount Rose Area 		Crusts in the upper snowpack on a micro SE aspect at 9320 Trace of wintry new snow warming on solar aspects Public
04/08/2023 - 12:00
Avalanche Observation 		Alpine Meadows
Five Lakes Area 		Public
04/08/2023 - 12:00
Snowpack Observation 		Red Lake Peak
Carson Pass Area 		Cloud cover prevented significant surface wetting prior to noon Previous sastrugi might be transitioning to sun cups soon. Most of our descent was ideally smooth Professional Observer
04/08/2023 - 13:00
Avalanche Observation 		Johnson Canyon
Donner Summit Area 		Wet loose avalanches occurring on the North Side of Donner Peak by 1pm. Corniced ridgeline of Powerline Peak with only small and previous collapses by noon. Shin deep boot pen wet snow at 11am. Guide
Tahoe Mountain Scho
04/08/2023 - 14:42
Avalanche Observation 		Andesite Ridge
Donner Summit Area 		Natural wet loose avalanche seen from Andesite Ridge Educator
Blackbird Mountain Guid
04/09/2023 - 10:30
Avalanche Observation 		Angora Peak
Echo Summit Area 		Public
04/09/2023 - 11:30
Avalanche Observation 		Rubicon Peak
West Shore Area 		A ski cut on this small E-facing test slope triggered a small sluff of wet snow. It stayed small because the slope was small. A ski kick on the same test slope triggered this 7 ft diameter pinwheel moments later. Looking up the small slope that produced the 7 ft diameter pinwheel. Thin, weak refreeze on N aspects at 9:45 am on Rubicon. Rollerballs, pinwheels, and wet loose activity on the E face of Jakes Peak. Clouds over the lake indicating colder air below the clouds and warmer air above the clouds. This inversion remained low and the cold air did not extend much above the lake level. Forecaster
04/09/2023 - 12:00
Avalanche Observation 		Flagpole Peak
Echo Summit Area 		Public
04/10/2023 - 11:00
Avalanche Observation 		Mt. Judah
Donner Summit Area 		Wet loose avalanches and cornice collapses along the Sierra Crest Recent cornice collapse sometime today along the N face of Donner Peak. Ski kicks on small test slopes create wet snow instabilities. Ski kicks on small test slopes create wet snow instabilities. W aspects this morning were unsupportable with 4-8''+ of wet snow even with strong to gale force SW winds. Forecaster
04/10/2023 - 11:50
Avalanche Observation 		Mt Rose S Face
Mount Rose Area 		Public
04/10/2023 - 12:30
Snowpack Observation 		SE Shore
Luther Pass Area (including Job and Freel) 		Public
04/10/2023 - 15:00
Avalanche Observation 		Donner Peak
Donner Summit Area 		Forecaster
04/10/2023 - 16:00
Avalanche Observation 		Blue Lakes
Carson Pass Area 		Ski and track penetration were a few inches into wet surface snow, with deeper boot penetration I was surprised not to see any wet loose activity. Zoom in to see highmarking tracks that didn't trigger anything Large cornices in the area Boarder Bowl receiving strong sunshine but no avalanche activity A wet loose avalanche above the Crystal Springs campground. It looks like at least two avalanches that converged Another avalanche in Woodfords Canyon. The debris is on top of an older debris pile Professional Observer

Pages