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
03/21/2018 - 14:00 Far east ridge of Tamarack Mount Rose Area Snowpack Observation Storm slab cracking and release on small test slope in below treeline terrain. Shooting cracks resulting from heavy storm snow on top of lighter older snow. Fragile cornices in this area.  These large cornice drops did not initiate wind slab avalanches. Forecaster
03/21/2018 - 11:30 Emerald Bay Desolation Wilderness Area (including Emerald Bay) Avalanche Observation Forecaster
03/20/2018 - 12:45 Hidden Peak West Shore Area Snowpack Observation March 13 graupel layer on top of melt freeze crust Forecaster
03/20/2018 - 12:00 Proletariat Mount Rose Area Snowpack Observation Looking at the crown. My finger is pointing to the weak layer and the crust is visible where I shoveled out part of the crown. Runnels on an ESE aspect at 9200 ft. Forecaster
03/20/2018 - 10:00 Twin Lake Carson Pass Area Snowpack Observation Professional Observer
03/20/2018 - 10:00 Echo Lake Echo Summit Area Snowpack Observation Runnels on South facing slope below Talking Mountain Roughly two foot diameter roller ball from previous days warming on South East aspect. Reverse skin track showing extent of previous snow transport. Professional Observer
03/20/2018 - 07:30 NE side Donner Peak Donner Summit Area Snowpack Observation Guide
03/19/2018 - 15:00 The Nipple Carson Pass Area Snowpack Observation Professional Observer
03/19/2018 - 14:15 Job's Peak - Jaws Couloir Luther Pass Area (including Job and Freel) Snowpack Observation Public
03/19/2018 - 12:45 SE of Relay Peak Mount Rose Area Avalanche Observation Natural deep slab avalanche across entire slope.  3-4' deep. At the crown line profile, 9600', E aspect Avalanche debris covered by additional storm snow.  Some broken trees with areas of 6' + of avalanche debris. 3' down, a layer of graupel exists on top of a melt freeze crust at 9600', E aspect. Forecaster
03/19/2018 - 12:00 Tram Ridge Zone, Shirley Canyon Cabin Creek, Deep Creek, or Pole Creek Area Avalanche Observation Public
03/19/2018 - 11:30 Basin peak Donner Summit Area Avalanche Observation Public
03/19/2018 - 10:30 NE Fireplug Mount Rose Area Snowpack Observation Stress cracks filled by subsequent snow top of NE Fireplug Public
03/19/2018 - 03:00 My Ralston Echo Summit Area Snowpack Observation Public
03/18/2018 - 13:30 Incline Peak NE Bowl Mount Rose Area Avalanche Observation Mid slope looking at the crown line and bed surface View down to debris pile Extent of debris field up to crown Warming near rock Additional crown line in the bowl Cornice collapse at summit Public