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
01/23/2019 - 12:30 Back side of Houghton Mount Rose Area Snowpack Observation Public
03/13/2019 - 12:00 Davis Creek Mount Rose Area Avalanche Observation wet debris visible in runout Public
02/14/2019 - 17:30 Round hill Mount Rose Area Snowpack Observation Rain runnels Small roller balls Open water griff creek Public
11/23/2018 - 15:00 Upper Ophir Creek Drainage Mount Rose Area Snowpack Observation Wind slab over storm slab (hand shear) HS 35-55 cm 4f over F Shooting cracks Public
02/28/2019 - 10:45 Five miles east of China Wall OHV Outside of the Forecast Area Avalanche Observation Public
12/17/2018 - 11:45 Mt. Lola Independence Lake Area Snowpack Observation Active wind transport along ridge line @ 8000' Small loose dry avalanche Storm hung up on the HWY49/Yuba river drainage Public
03/17/2019 - 15:00 Castle Peak Donner Summit Area Snowpack Observation Wet surface snow at lower elevation Roller balls of various sizes on South face East facing cornices with roller balls Thin ice crust forming across surface High elevation trees holding their N facing snow Cornices on North bowl of castle Public
01/14/2019 - 15:00 North Bowl on Castle Peak Donner Summit Area Snowpack Observation 1/11 Avalanche on Castle Peak Public
02/17/2019 - 16:00 Trestle Peak Donner Summit Area Avalanche Observation Public
03/04/2019 - 02:00 South Face of Slide Mountain Mount Rose Area Snowpack Observation Ski cut Public
01/16/2019 - 13:00 2.5k west of peak 8740 Independence Lake Area Avalanche Observation Test slope avalanche on small wind loaded cornice Shooting crack from snowmobile ski tip Shooting crack from snowmobile track Public
03/08/2019 - 14:00 Border Ruffian/Tamarack Zone Carson Pass Area Snowpack Observation Public
03/24/2019 - 13:15 Donner Peak, Poop Chute area Donner Summit Area Avalanche Observation Public
05/22/2019 - 09:00 Kirkwood Carson Pass Area Avalanche Observation Blowing snow and wind scouring on ridges Public
01/19/2019 - 12:30 ~30 meters SW of Lake Mary Donner Summit Area Snowpack Observation Public


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