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 Snowpack, Avalanche, Weather Images Observation made by
02/11/2023 - 13:30
Snowpack Observation 		Johnson Canyon
Donner Summit Area 		Public
02/11/2023 - 13:25
Snowpack Observation 		Johnson Canyon E 6,922'
Donner Summit Area 		Guide
Tahoe Mountain School
02/11/2023 - 13:00
Snowpack Observation 		Andesite Peak
Donner Summit Area 		The newly formed winds slabs measured about 10-12 inches at their deepest and quickly got thinner (2 inches thick about 5 ft from my skis) as you moved down slope. More wind slab cracking on the W facing side of Andesite Peak. Small wind slabs had formed on W aspects near the top of Andesite. These cracked when I stepped on them. This wind slab is thickest near the ridge and tapers down to a couple inches thick within 10 feet of the ridge. It was typical of the wind slabs I saw today. Wind scoured surfaces were widespread along the ridge tops. Wind scoured surfaces were widespread along the ridge tops. Wind-sculpted snow surfaces on the E aspects of Andesite Peak. The NE winds were moving snow enough snow in open areas near treeline to fill this skin track in less than 30 minutes. About 2 inches of new snow accumulated on Andesite with closer to 3 inches reported from higher on Castle Peak Forecaster
02/11/2023 - 12:30
Avalanche Observation 		Relay Peak
Mount Rose Area 		Public
02/10/2023 - 12:00
Snowpack Observation 		Incline Lake Peak
Mount Rose Area 		ECTN on a N facing slope in sheltered below treeline terrain. Wet loose snow instabilities from previous days on sunny slopes. Wind-scoured surfaces on wind-exposed slopes along the summit ridge of Incline Lake Peak Lenticular clouds indicating increasing wind speeds. Wind-affected snow surfaces were widespread on exposed upper elevation slopes. Forecaster
02/10/2023 - 03:30
Snowpack Observation 		Blue lakes
Carson Pass Area 		Public
02/09/2023 - 15:30
Snowpack Observation 		Deep Creek
Cabin Creek, Deep Creek, or Pole Creek Area 		Screen shot of pit locations and notes with topo map. Screen shot of pit locations and notes with satellite map. Pit 4: Clear layer of surface hoar down 49 cm Pit 4: Surface hoar, some of which has metamorphosed to a form like depth hoar. Pit 4: Surface hoar, some of which has metamorphosed to a form like depth hoar. Pit 4: Surface hoar, some of which has metamorphosed to a form like depth hoar. Guide
Blackbird Mountain Guides
02/09/2023 - 14:30
Snowpack Observation 		Frog Lake Cliffs
Donner Summit Area 		Guide
Alpenglow Expeditions
02/09/2023 - 12:00
Snowpack Observation 		Calm clear day on Trimmer Peak
Luther Pass Area (including Job and Freel) 		Breakable melt freeze crust on solar aspects in below tree line terrain. 25cms of buried near surface facets on NW aspect @ 7800'. Non-compressible NSF below recent snow in pit @ 7800. Wind effected snow in open areas in near tree line terrain. 330cm of snow at 9200'. Unreactive buried surface hoar at 9200' 25cm down. Professional Observer
02/09/2023 - 12:00
Snowpack Observation 		Horse Meadow
Luther Pass Area (including Job and Freel) 		Old wind rolls in the trees, with a new round of surface hoar on top Rollerball activity at 9,400ft Prying on ECT columns left only partly planar surfaces Professional Observer
02/09/2023 - 11:30
Snowpack Observation 		Yuba Pass
Yuba Pass Area 		Jan 29 buried surface hoar layer. Unreactive at this location. Jan 29 buried SH layer. 1 to 2.5cm in size. Location of ECT's Forecaster
02/08/2023 - 12:30
Snowpack Observation 		The Sisters
Carson Pass Area 		Public
02/08/2023 - 11:01
Snowpack Observation 		Silver Peak
Cabin Creek, Deep Creek, or Pole Creek Area 		Guide
Tahoe Mountain School
02/08/2023 - 11:00
Snowpack Observation 		Silver Peak
Cabin Creek, Deep Creek, or Pole Creek Area 		Signs of wind effect on the snow surface were widespread near treeline and above treeline. Old, very shallow wind slab avalanche in NE aspect terrain near treeline. 2 to 3 inches of surface wet snow with rollerballs and small pinwheels on SE aspect terrain around 7,800'. Thin sun crust in areas of direct sun exposure at 8,200'. Forecaster
02/08/2023 - 10:47
Snowpack Observation 		Unreactive buried surface hoar on Elephant's Hump
Carson Pass Area 		Compression tests showing initiation on buried surface hoar @ 30cm down. ECTN results on buried surface hoar. Wet snow on solar aspects just before noon. Large wind waves on the face of Elephant's back from Monday's wind event. Professional Observer
02/08/2023 - 10:30
Snowpack Observation 		Deer Park
Five Lakes Area 		Educator
Alpenglow Expeditions
02/08/2023 - 07:00
Snowpack Observation 		Above heart chute
Donner Summit Area 		Public
02/07/2023 - 13:30
Snowpack Observation 		Shirley Canyon
Cabin Creek, Deep Creek, or Pole Creek Area 		Guide
Alpenglow Expeditions
02/07/2023 - 13:20
Snowpack Observation 		South of Red Lake
Carson Pass Area 		Public
02/07/2023 - 12:30
Snowpack Observation 		Hidden Peak
West Shore Area 		Investigating a reported slab avalanche from 2 days ago on Sunday. Storm slab failed on NSF below the Sunday storm snow. Small cracking in some of the recent wind features. Previous wind scouring in exposed NTL areas. Wet surface snow with roller balls on E aspects by late morning. Increased cloud cover by early afternoon Forecaster

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