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
02/24/2019 - 11:15 Castle Peak Donner Summit Area Avalanche Observation Public
12/19/2018 - 09:00 N of Twin Sentinels Carson Pass Area Snowpack Observation Public
02/12/2019 - 12:45 Jobs Peak East Shoulder Luther Pass Area (including Job and Freel) Avalanche Observation Google Earth Image of avalanche and rescue High wind was transporting snow from the west to the East. The treed area on the East shoulder had some major scowering. This was just before the area that broke loose. Public
12/02/2018 - 10:00 Broken Glass Mount Rose Area Snowpack Observation Public
12/23/2018 - 14:00 Scott’s peak Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Public
02/03/2019 - 13:30 Incline peak Mount Rose Area Avalanche Observation Avalanche debris 15 foot shooting cracks Public
02/17/2019 - 10:45 Incline Lake Peak Mount Rose Area Snowpack Observation Public
03/21/2019 - 12:15 Martis Valley West Mount Rose Area Snowpack Observation Constant cracking while skinning Trees holding a dusting of snow on their north faces, beginning at 6800ft Ski penetration 3-4in Layers marked are (from top): new/old snow interface, very weak layer, beginning of melt/freeze snow, end of melt/freeze snow Rounds taken from melt/freeze layer, mostly 1mm diameter, but stuck together in 3-5mm balls Break from crude shovel shear test Public
12/28/2018 - 12:00 Chickadee Ridge Mount Rose Area Snowpack Observation Public
01/16/2019 - 02:00 Incline Lake Peak Mount Rose Area Avalanche Observation Public
02/06/2019 - 14:00 Shirley Canyon Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Public
02/09/2019 - 23:00 Ridge between Forks of Coldstream Creeks Cabin Creek, Deep Creek, or Pole Creek Area Avalanche Observation Public
02/23/2019 - 14:30 Relay Peak Mount Rose Area Snowpack Observation Public
03/10/2019 - 13:00 Fire Plug Mount Rose Area Snowpack Observation 2-3 foot cornices would collapse with a few kicks After undercutting, this wind lip did not crack or break when jumped on Public
12/15/2018 - 12:15 Castle Peak NE Face Donner Summit Area Snowpack Observation NE Slopes on Castle Peak Steep entrance with cornice NE face access trough hole in rock band Large cornices on N ridge Public


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