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.

Location Region Observation Type Date and time of observation or avalanche occurrence Avalanche observation video Avalanche photos Snowpit videos (tests, etc) Snowpack photos Snowpit or crown profile photo or graph Observation made by
Incline Peak Near Summit Mount Rose Area Snowpack Observation 01/09/2018 - 12:30 Public
Elephants Hump Carson Pass Area Snowpack Observation 01/09/2018 - 12:00 Natural cracking down into facet layer. More natural cracking down into facet layer. Still more natural cracking down into facet layer. Forecaster
Tamarack Peak Mount Rose Area Snowpack Observation 01/09/2018 - 11:30 Small wind slab failure resulting from a ski cut on a small wind-loaded test slope near the ridge at 9700 ft. on a NE aspect. ECTN on a N aspect at 10200 ft. on My Houghton. This test was representative of the other snowpit tests we performed today. Forecaster
Elephants Hump Carson Pass Area Avalanche Observation 01/09/2018 - 02:00 Forecaster
Andesite Ridge/Peak Donner Summit Area Snowpack Observation 01/08/2018 - 12:45 Educator
Donner Summit Avalanche Seminars
Rubicon Peak West Shore Area Snowpack Observation 01/08/2018 - 10:30  ECTP8 on a N aspect at 8600 ft. A moist to wet facet layer below Friday night's snow was the failure layer. Forecaster
Bear Valley Bear Valley Area Snowpack Observation 01/07/2018 - 14:45 Public
Proletariat Bowl Skier's Right Mount Rose Area Avalanche Observation 01/07/2018 - 14:25 Public
Castle Pass Donner Summit Area Snowpack Observation 01/07/2018 - 14:09 Facets below crust Firm crust on all aspects Guide
Tahoe Mountain School
Woods Lake Carson Pass Area Snowpack Observation 01/07/2018 - 14:00 Minor cracking on a test slope at about 8400'. Rollerballs on steep slopes with exposed rocks. Public
Red Lake Peak Carson Pass Area Snowpack Observation 01/07/2018 - 12:30 Skier triggered cracking on a northerly aspect at ~8600 ft. where a 10 ft. x 10 ft. whumpf occurred. The weak layer was moist facets below a rain crust at the base of the new snow. ECPT on a N aspect @ 8880 ft. The weak layer was moist to dry facets below a rain crust at the base of the new snow. Forecaster
East Ridge Relay Peak Mount Rose Area Snowpack Observation 01/06/2018 - 13:00 Large shooting cracks where storm snow sits on top of old near surface facets.  9400' N aspect. Same area as Photo #1.  9400' N aspect. ECTP11 on old near surface facets below the new storm snow.  9600' on N aspect in below treeline wind protected terrain. Forecaster
Andesite Ridge Donner Summit Area Snowpack Observation 01/06/2018 - 12:30 Breakable Crust on Andesite Ridge Castle Peak with lift clouds around 12 30 Educator
Tahoe Mountain School
Test slope just north of Frog Lake Carson Pass Area Snowpack Observation 01/06/2018 - 12:07 Public
Twin Peaks Blackwood Canyon or Ward Canyon Area Avalanche Observation 01/06/2018 - 06:00 Public

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