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
01/24/2016 - 13:15 Mt. Baldy, north shore Lake Tahoe Snowpack Observation Public
03/31/2018 - 11:30 Silver Peak Snowpack Observation Skis started punching deeper (10 to 15 cm) into the wet snow on a SE and E aspect at 6800 ft at noon. Pole probes showed 25 to 30 cm of wet snow. Forecaster
04/02/2017 - 12:00 NatGeo bowl Snowpack Observation glide cracks NatGeoFirnspiegel Guide
Alpenglow Expeditions
01/14/2017 - 09:08 Billys Avalanche Observation
Skin track set this off
Public
04/14/2017 - 13:00 Tram Face Squaw Avalanche Observation
D2 Wet Slab
Public
01/11/2016 - 12:30 W ridge Castle Pk Snowpack Observation Guide
Donner Summit Avalanche Seminars
04/09/2017 - 12:00 Polaris Bowl Avalanche Observation
Public
11/23/2016 - 10:30 Andesite Peak Snowpack Observation Public
03/05/2017 - 13:00 Hirschdale Snowpack Observation Ski kick triggered wind slab both failures were approximately 20cm deep.Debris from wind loaded test slope that failed Public
04/09/2017 - 10:45 Tram Ridge Squaw Snowpack Observation surface hoarhand shear Guide
Alpenglow Expeditions
01/01/2017 - 13:00 upper S. Fork Cold Creek Snowpack Observation Public
03/06/2018 - 15:45 Winter’s Creek Gully, Carson Range Avalanche Observation Public
02/25/2018 - 21:00 Becker Ridge Snowpack Observation Thin coverage on the ridge near 8000 ft. Looking from Becker Peak to Talking Mountain. Well developed facets found about 25 cm down in the snowpack on a N aspect at 8000 ft. 2mm grid in the background Forecaster
01/08/2016 - 15:41 Euer Valley Avalanche Observation
Public
01/24/2016 - 11:35 Silver Peak Snowpack Observation Forecaster

Pages

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