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 http://www.snowpilot.org/. 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
12/02/2018 - 10:00 Broken Glass Mount Rose Area Snowpack Observation Public
03/24/2019 - 12:30 rose knob Mount Rose Area Avalanche Observation Public
04/20/2019 - 15:15 Negro Canyon Donner Summit Area Snowpack Observation Public
12/23/2018 - 14:00 Scott’s peak Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Public
02/23/2019 - 11:00 Job's peak East Shore Area Snowpack Observation Public
12/28/2018 - 12:00 Chickadee Ridge Mount Rose Area Snowpack Observation Public
02/10/2019 - 11:30 Cottonwood Hill Sawtooth Ridge to Tahoe City Snowpack Observation ECTN14 @ 45cm down. After 30 taps and no failure, we pulled on the back of the column and it broke cleanly. Public
02/24/2019 - 15:00 Verdi peak Outside of the Forecast Area Avalanche Observation Public
03/31/2019 - 11:30 Twin Peaks Blackwood Canyon or Ward Canyon Area Snowpack Observation Very wet snow and small rollerballs on a shallow S facing slope at 1pm. Public
01/26/2019 - 14:45 The Grills AKA Tom's Meadow Independence Lake Area Snowpack Observation Public
02/16/2019 - 12:00 Powderhouse Luther Pass Area (including Job and Freel) Snowpack Observation Public
03/02/2019 - 12:00 Powderhouse Luther Pass Area (including Job and Freel) Snowpack Observation 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
04/10/2019 - 11:45 Hawk's Peak Donner Summit Area Snowpack Observation Melted and refrozen crust w/ some wind effect Shallow wind scour + deposit 1-2cm of new snow atop frozen rain crust NE facing cornice break (Sunrise Bowl) E facing cornice break E facing cornice break Public
02/03/2019 - 13:30 Incline peak Mount Rose Area Avalanche Observation Avalanche debris 15 foot shooting cracks Public

Pages

Subscribe to Central Sierra Nevada / Lake Tahoe Snowpack, Weather, and Avalanche Observations for California and Nevada from SAC