Please remember that these observations indicate what was going on in the snowpack at a single point in time and space. They may not represent conditions where you are or where you plan to be. They also come from a variety of sources. SAC cannot vouch for the quality or accuracy of any observations that come from the general public. Some of these may be professional quality observations; some may not. Please use observations listed on this page as part of your information gathering process, but as always don't make decisions based on a single piece of information. If you are looking for more information on how to understand the information on this page, all of the pit data graphs and stability tests are part of what is presented in a Level II avalanche class that follows the American Avalanche Association (AAA) or American Institute for Avalanche Research and Education (AIARE) curriculum guidelines. All of the coding and abbreviations for data presented follows the publication Snow, Weather, and Avalanches: Observational Guidelines for Avalanche Programs in the United States (SWAG) which is the standard for all professional avalanche programs in the US. An electronic copy is available here. Most of what you are looking for is in Chapter 2 and Appendix F part 1. We use a program called SnowPilot to create the snowpit graphs. It is available as an online tool or as a downloadable program at This website also has a quick video and user guide on how to use create snowpits. Please send us your observations using the buttons below.
Date and time of observation or avalanche occurrence Location Region Observation Type Photos Snowpack, Avalanche, Weather Videos Snowpit videos (tests, etc) Observation made by
03/28/2019 - 13:15 Just north of Mt Lola Independence Lake Area Avalanche Observation Public
01/23/2019 - 12:30 Back side of Houghton Mount Rose Area Snowpack Observation Public
12/08/2018 - 11:30 Castle Peak Donner Summit Area Snowpack Observation Extended column test with no failure, Snow pack was 125cm Surface hoar was seen almost everywhere, except for the most sunny areas. Public
03/13/2019 - 12:00 Davis Creek Mount Rose Area Avalanche Observation wet debris visible in runout Public
02/25/2019 - 13:15 Stanford Rock Blackwood Canyon or Ward Canyon Area Avalanche Observation Public
02/16/2019 - 10:30 Incline Peak Mount Rose Area Avalanche Observation Public
12/14/2018 - 10:30 Anderson Ridge Donner Summit Area Snowpack Observation High winds but minimal local ridge top transport wind scoured and side loading below the ridge thin and non-reactive wind loading at 10:30a Public
03/02/2019 - 14:00 Schallenberger Donner Summit Area Snowpack Observation Public
01/16/2019 - 09:30 Picnic Rock Brockway Sawtooth Ridge to Tahoe City Avalanche Observation Public
04/10/2019 - 14:00 Incline Peak Mount Rose Area Snowpack Observation 1"+ Wind affected but smooth cold new snow on higher 9400' N/NE aspects at 145p - Fog is from lens Smooth warm non-sticky South Facing turns to 8200' at 2p - supported on skis but shin deep w boots Public
12/18/2018 - 15:00 After Party Independence Lake Area Avalanche Observation Public
03/06/2019 - 14:30 North ridge incline lake peak Mount Rose Area Avalanche Observation Small natural storm slab on convex unsupported slope ss-n-r2-d1.5 Larger storm slab (appeared to be natural) slide propagated around terrain feature and into adjacent bowl.  Public
03/24/2019 - 10:45 Avalanche Path on S side of Mt Ralston Echo Summit Area Avalanche Observation Arrow shows area where slide started Shows trigger point partial path Debris where it stopped on a bench across from our rest spot Public
12/01/2018 - 12:15 Gareth Feldstein Donner Summit Area Snowpack Observation Wind loading - small cornice 125cm weak top layer roughly 35cm Checking the crust @ 55cm - 30cm Crust @ 55cm Joe - extended column test (Low angle probably prevented negative test results) Wind loading along the ridge-line Lots of wind on the ridge-line Public
02/08/2019 - 11:00 Mt. Tallac Desolation Wilderness Area (including Emerald Bay) Snowpack Observation Public


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