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. This program is available as a free download at A video on how to download and use this program is available here.

Location Region Observation Type Date and time of observation or avalanche occurrence Avalanche observation video Avalanche photos Snowpit videos (tests, etc) Snowpack photos Snowpit or crown profile photo or graph Observation made by
Freel and Job's Luther Pass Area (including Job and Freel) Snowpack Observation 02/23/2017 - 12:00 Professional Observer
Relay Peak Recreation Area Mount Rose Area Snowpack Observation 02/23/2017 - 07:00 Public
Silver Peak Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation 02/22/2017 - 13:00 Cornice piece dropped onto a wind-loaded slope. It only triggered  sluffing  in the new snow and rolled down the slope. Settlement cracks around a tree Wind scouring on a N-NE aspect near the Silver ridgeline Forecaster
Hope Valley Carson Pass Area Snowpack Observation 02/22/2017 - 12:00 Professional Observer
Powderhouse Luther Pass Area (including Job and Freel) Snowpack Observation 02/22/2017 - 10:00 Settlement cones and associated cracking were frequently observed. Near treeline the surface snow was clearly wind affected. Above treeline on an exposed ridge large windrifts were common. These wind loaded steep slopes were highly reactive to a skiers weight. In the trees on the edge of a ridge a small slope released a wind slab. This below treeline (but near an open ridge) slope produced a wind slab that ran approximately 50 feet. Professional Observer
Little Gold Lake Outside of the Forecast Area Avalanche Observation 02/22/2017 - 03:10 Lakes Basin Public
Hidden Peak West Shore Area Snowpack Observation 02/21/2017 - 14:00 Shooting cracks on a wind-loaded test slope @ 8600 ft. ECTN 15 at the upper density change in the storm snow ECTN 21 at the lower density change in the storm snow Forecaster
Corkscrew slide path Desolation Wilderness Area (including Emerald Bay) Avalanche Observation 02/21/2017 - 01:00 Toe of the debris.Huge blocks in the debris.Looking up from the highest point of the debris.Looking down on the debris from higher on the edge of the Corkscrew path. Professional Observer
Hidden/Jakes West Shore Area Avalanche Observation 02/20/2017 - 15:06 Public
Andesite Ridge Donner Summit Area Avalanche Observation 02/20/2017 - 12:00 Natural storm slab, 46 degree slope, NE aspect, 7500'.Avalanche debris running through trees. Forecaster
north facing slope adjacent to Lake Alpine Bear Valley Area Snowpack Observation 02/20/2017 - 11:32 Public
Andesite Peak Donner Summit Area Avalanche Observation 02/20/2017 - 10:50 Initial cracks triggered by kicking on the upper part of slope which caused the avalanche down lower at the mid slope convexity.Initial cracks triggered by kicking on the upper part of slope which caused the avalanche down lower at the mid slope convexity.The small avalanche in which skier was caught.Red lines over crown of lower avalanche that occurred before ski pole drop. Green line over crown of small avalanche that carried skier.Skier with deployed airbag after being carried 200 vertical feet by small avalanche, no burial. Forecaster
Carpenter Ridge Independence Lake Area Snowpack Observation 02/19/2017 - 15:02 Public
Andesite Ridge Donner Summit Area Snowpack Observation 02/19/2017 - 14:00 Guide Tahoe Mountain School
Just off ridge talking mountain Echo Summit Area Avalanche Observation 02/19/2017 - 13:41 Public