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
01/21/2018 - 12:00 Crater Lake Carson Pass Area Snowpack Observation Professional Observer
01/11/2018 - 13:30 Red Lake Peak Carson Pass Area Snowpack Observation Public
01/29/2018 - 13:10 National Geographic Bowl, Granite Chief Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Guide
Alpenglow Expeditions
12/27/2016 - 14:01 Central Sierra Snow Laboratory Donner Summit Area Snowpack Observation Professional Observer
02/03/2018 - 13:30 Underwood Bowl Bear Valley Area Snowpack Observation 2 to 5 cm (1 to 2 in) of corn snow on a S aspect at 3:00 pm.Patchy snow cover on SE-S-SW aspects in the area. Recent cornice collapses and good snow cover on NE aspects.Snow cover on N aspects and lack of snow cover on S aspects in the distance Forecaster
12/31/2016 - 12:00 Talking Mountain Echo Summit Area Snowpack Observation Coverage on North aspects along the ridge. Forecaster
02/11/2018 - 12:00 Elephant's Hump Carson Pass Area Snowpack Observation Looking across at the E and SE aspects of Red Lake Peak with the N aspects of Elephant's Hump in the foreground.Ski tracks showing soft snow in the shade and icy crusts in the sun.Significant melting that has occurred on an E-NE aspect at 7900 ft. on the skin into Elephants Hump. Forecaster
11/17/2015 - 10:30 Chickadee Ridge Mount Rose Area Snowpack Observation Forecaster
01/04/2017 - 12:30 Waterhouse Peak Luther Pass Area (including Job and Freel) Snowpack Observation Wind loading and drifts forming just above tree line.Lose dry slough on surface. Public
12/01/2015 - 12:30 Elephants Hump Carson Pass Area Snowpack Observation Forecaster
01/06/2017 - 14:15 Andesite Peak Donner Summit Area Snowpack Observation Settlement crack Forecaster
12/09/2015 - 11:00 Echo Lake to Flagpole Echo Summit Area Snowpack Observation Professional Observer
01/12/2017 - 14:45 Powderhouse Luther Pass Area (including Job and Freel) Snowpack Observation Dry loose slough on steeper slopesCornices and wind loading at ridgeRimming at ridgelineObserving rain crusts near 300cm from topWet saturated snow near crusts near 300cm from top Public
12/13/2015 - 14:15 Castle Peak West Ridge Donner Summit Area Snowpack Observation Public
12/18/2015 - 12:00 Folger Peak Ebbetts Pass Area Snowpack Observation Professional Observer


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