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
03/25/2020 - 10:15
Snowpack Observation 		Powderhouse
Luther Pass Area (including Job and Freel) 		Looking down from pit area Hand hardness x2 CTM(15) SP at 95cm down Educator
Lake Tahoe Community College - Wilderness Educati
12/08/2019 - 13:30
Snowpack Observation 		Incline Lake Peak
Mount Rose Area 		approximately 3mm surface hoar down 65cm, near dropped pin Educator
Lake Tahoe Community College - Wilderness Educati
12/20/2020 - 13:00
Snowpack Observation 		Deep Creek
Cabin Creek, Deep Creek, or Pole Creek Area 		Educator
Alpenglow Expeditio
01/07/2022 - 12:00
Snowpack Observation 		Powderhouse
Luther Pass Area (including Job and Freel) 		Pic 1: Clearly identifiable decomposing rain crust between 60 and 61 cm. Pic 2: ECTX but when I pulled from the back with my shovel it did release but with a lot of pressure on the Dec 10 layer (60cm). Educator
Lake Tahoe Community College - Wilderness Educati
01/17/2016 - 13:30
Snowpack Observation 		NW of Snowshed Wall
Donner Summit Area 		Educator
Tahoe Mountain Scho
02/25/2017 - 10:30
Snowpack Observation 		Donner Ridge
Donner Summit Area 		Educator
Donner Summit Avalanche Semina
01/07/2021 - 11:30
Snowpack Observation 		South of Red Lake
Carson Pass Area 		Fist- snow in the Dec 11 layer, about 44cm down Large facets in the Dec 11 layer 44cm down to about 3cm above the ground Educator
Lake Tahoe Community College - Wilderness Educati
02/05/2022 - 12:11
Snowpack Observation 		Johnson canyon
Donner Summit Area 		Wind scoured surfaces on a N aspect Scouring of NE aspect, with slick rain crust on the surface, wind textured snow Crusts and developing facets near the surface on a N aspect Educator
Blackbird Mountain Guid
03/04/2022 - 13:30
Snowpack Observation 		Powderhouse
Luther Pass Area (including Job and Freel) 		Weak layer below very thin crust 20cm down. CTM(13) SP 20cm down. Educator
Lake Tahoe Community College - Wilderness Educati
11/29/2019 - 09:30
Snowpack Observation 		Frog Lake
Carson Pass Area 		View towards Elephants Back 55cm of light fist hard snow 10cm of facets at the bottom of the snowpack Closeup of the facets Educator
Lake Tahoe Community College - Wilderness Educati
02/12/2021 - 14:45
Avalanche Observation 		The Grills
Little Truckee Summit Areas 		Rider triggered slab on the Grills Educator
West Wind Collecti
01/23/2022 - 12:11
Snowpack Observation 		Castle Peak
Donner Summit Area 		Raised track and wind effect on the north face of Castle Sun softened snow on a South aspect @ 2pm Soft, surface faceted snow in sheltered terrain. 2-3mm surface hoar in a start zone above steep terrain Educator
West Wind Collecti
03/07/2021 - 09:30
Avalanche Observation 		Shirley Canyon
Cabin Creek, Deep Creek, or Pole Creek Area 		Terrain where surface instability occurred Close Up of surface instability Another close up of surface instability Educator
Alpenglow Expeditio
12/19/2021 - 13:15
Snowpack Observation 		Relay Ridge
Mount Rose Area 		Test slope producing small windslabs Wind texture and drifting snow along the ridge Dec 9 facets rounding Educator
West Wind Collecti
01/15/2020 - 15:30
Snowpack Observation 		Powder house Meadow
Luther Pass Area (including Job and Freel) 		Educator
Lake Tahoe Community College - Wilderness Educati

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