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 button above.
Date and time of observation or avalanche occurrence Location Region Observation Type Photos Snowpack, Avalanche, Weather Videos Snowpit videos (tests, etc) Observation made by
11/30/2019 - 12:15 Elephant's Back Carson Pass Area Snowpack Observation Cracking near cornice features Still very thin and rocky in this north facing 9000 foot elevation terrain. Looking at the base of a 75cm snow pack. An ECTP 13 that broke at the ground. This followed a CTM 15 (SC) in same location. Professional Observer
01/14/2020 - 11:30 Rubicon Peak West Shore Area Snowpack Observation Wind textured snow and blowing snow Cracking Re-loaded skin track Professional Observer
01/25/2020 - 14:00 Indian Valley Ebbetts Pass Area Snowpack Observation Professional Observer
01/17/2020 - 11:15 Waterhouse Peak Luther Pass Area (including Job and Freel) Snowpack Observation Soft sastrugi on SE slope near the summit Compact car size cornice that broke easily from behind the small tree. Another easily broken cornice. Shooting cracks in wind slab terrain. Professional Observer
03/16/2020 - 12:00 Border Ruffian Carson Pass Area Snowpack Observation Professional Observer
04/03/2020 - 11:30 Schneider Cow Camp Carson Pass Area Snowpack Observation Professional Observer
04/19/2020 - 10:00 Summit City Carson Pass Area Snowpack Observation Professional Observer
01/08/2020 - 13:00 Mount Judah Donner Summit Area Snowpack Observation Professional Observer
12/15/2019 - 12:00 Meiss Headwaters Carson Pass Area Snowpack Observation Professional Observer
01/12/2020 - 14:00 Blue Lakes Carson Pass Area Snowpack Observation Professional Observer
03/10/2020 - 12:00 Elephant's Back Carson Pass Area Snowpack Observation Professional Observer
01/24/2020 - 12:00 Red Lake Peak Carson Pass Area Snowpack Observation , Professional Observer
12/02/2019 - 14:00 Powderhouse Luther Pass Area (including Job and Freel) Snowpack Observation Snow covered trees at about 8000 feet on Luther Pass. Poor photo, but the heavy new snow cracked as I undercut it with my ski. Over 9000 foot summit area had obvious wind features. This small cornice broke easily as I skinned near it. Snow depths at and just below summit ranged from 100 - 115 cms Professional Observer
01/15/2020 - 11:00 Frog Lake Carson Pass Area Snowpack Observation In a near treeline ridge area, the 1/4 rain crust was still on the surface. Shooting cracks on a firm windslab. Thickness of wind slab (there were soft near surface facets below). Near the lowest point of our tour (around 8000 feet and well below treeline) there were pockets of wind slab. Professional Observer
02/20/2020 - 15:00 Peak 9452 Carson Pass Area Snowpack Observation A couple inches of soft snow during the late afternoon. Previous ski tracks indicating snow softening earlier this week. Several large branches had been knocked down by 2/9 wind event Gully holding debris from 2/9 wind event. Trying to capture depth with my pole for scale of these sun cups/neve penitentes Large area of significant neve penitentes Professional Observer

Pages

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