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
03/14/2018 - 13:00 Tamarack Peak Mount Rose Area Avalanche Observation Public
03/14/2018 - 12:00 Castle Peak/Andesite Peak Donner Summit Area Avalanche Observation Shooting cracks with wind slab release on E aspect, 8000', on Castle Ridge. 1.5 to 2' deep wind slab on NW aspect, 8250', 35 degree slope. Natural wind slab/cornice release partially covered by additional snow. Forecaster
03/13/2018 - 12:00 Incline Lake Peak/Slab Cliffs Mount Rose Area Snowpack Observation Thin rain crust up to 9200' in this area. Small loose wet instabilities due to overnight rain event. Forecaster
03/13/2018 - 11:00 Andesite Peak Donner Summit Area Avalanche Observation Large pinwheels triggered by ski kicks at the top of the slope on a ENE aspect @ 8000 ft. Loose wet sluff mixed with large pinwheels on an E aspect @ 7400 ft. Forecaster
03/12/2018 - 12:30 Jakes Peak West Shore Area Snowpack Observation Ski cut triggering small loose wet avalanche with pin wheels up to 3 ft in diameter. Upper limit of fog/stratus layer at 6,800' at 9:50 am. Peaks in full sun. Fog/stratus layer over Lake Tahoe at 10:15 am. Forecaster
03/12/2018 - 08:15 Highway 431 - Mt Rose Highway Mount Rose Area Snowpack Observation Public
03/11/2018 - 14:00 Powderhouse Luther Pass Area (including Job and Freel) Snowpack Observation Professional Observer
03/11/2018 - 12:30 Nat Geo, Granite Chief Peak Cabin Creek, Deep Creek, or Pole Creek Area Avalanche Observation Surface Hoar Rounding Facets, North Aspect, 8300' Loose Dry avalanche in Nat Geo Guide
03/11/2018 - 11:30 Chickadee Ridge Mount Rose Area Snowpack Observation Public
03/11/2018 - 08:00 Wildflower Ridge Donner Summit Area Snowpack Observation Public
03/11/2018 - 01:00 Elephants Hump Carson Pass Area Snowpack Observation Mid level cloud cover from 7000' to 8000' from Homewood through South Lake Tahoe at 1pm.  Limited roller balls on sun exposed NE aspects in late morning hours. Forecaster
03/10/2018 - 15:15 Snowshed Wall Donner Summit Area Snowpack Observation Runnels Heavy snow at times Educator
03/10/2018 - 15:00 Upper Shirley Canyon Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation facets located 160cm depth Public
03/10/2018 - 15:00 Silverado Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Public
03/10/2018 - 14:00 Becker Peak Echo Summit Area Snowpack Observation Professional Observer