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
02/25/2019 - 11:00 Peak 9269' West Shore Area Snowpack Observation Intense blowing snow in below treeline areas at 8000'. 1cm layer of 2-3mm graupel on top of the 2/14 rain crust. Right side up snowpack with the thick 2/14 rain crust down 78cm. Forecaster
02/09/2019 - 10:30 Peavine Peak Outside of the Forecast Area Avalanche Observation Public
03/14/2019 - 15:30 Peter Leh Donner Summit Area Snowpack Observation Guide
Alpine Skills International (ASI)
03/08/2019 - 15:45 Picnic Rock Brockway Mount Rose Area Snowpack Observation Small cornices would fail with a low amount of effort Public
01/16/2019 - 09:30 Picnic Rock Brockway Sawtooth Ridge to Tahoe City Avalanche Observation Public
02/26/2019 - 16:00 Picnic Rock Brockway Mount Rose Area Snowpack Observation Public
12/28/2018 - 14:45 Pike's Peak (near highway 108 sno-park) Outside of the Forecast Area Snowpack Observation Public
03/23/2019 - 12:15 Plavada Outside of the Forecast Area Avalanche Observation Skier triggered loose wet on a steeper rollover. Loose wet failure on a test slope Public
02/10/2019 - 14:00 Poison Canyon Bear Valley Area Snowpack Observation Guide
California Ski Guides
02/24/2019 - 02:00 Polaris Bowl & Indian Valley Carson Pass Area Snowpack Observation Public
02/26/2019 - 12:00 Polaris Point Blackwood Canyon or Ward Canyon Area Avalanche Observation Forecaster
02/20/2019 - 11:00 Polaris Point Blackwood Canyon or Ward Canyon Area Snowpack Observation Periodic snow showers S1 to S5. S5 in this photo at 11:15 am. Forecaster
12/14/2018 - 11:00 Pole creek road Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Public
01/23/2019 - 09:15 Porcupine Ridge East Shore Area Snowpack Observation SE aspects with dry/wintery snow above 9000 ft at 9:15 am Porcupine Ridge/ST terrain The observation wall of our profile Natural roller balls on E-SE terrain under rocks Public
01/02/2019 - 10:00 Porcupine Ridge Luther Pass Area (including Job and Freel) Snowpack Observation A thin wind slab over roughly 15cms of very weak NSFs The wind slab varied in thickness and strength, but did show ability to crack. A lot of Surface Hoar in this area. North facing slopes held some impressively large Surface Hoar. Professional Observer


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