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
03/14/2019 - 15:30 Peter Leh Donner Summit Area Snowpack Observation Guide
Alpine Skills International (ASI)
03/14/2019 - 12:30 Incline Lake Peak and Slab Cliffs Mount Rose Area Snowpack Observation Scoured surfaces on a NE aspect along the summit ridge of Incline Lake Peak. Raised ski tracks on an E aspect near the summit ridgeline ECTP on a test slope wind-loaded by the NE winds. Ski kick triggered shooting crack on a previously undercut test slope wind-loaded by the NE winds. ECTN on a test slope wind-loaded by SW winds. Scoured slopes and large cornices on the summit of Incline Lake Peak. Settlement crack in below treeline terrrain. Tiger striping indicating cross-loading on a W / NW aspect. Forecaster
03/14/2019 - 11:00 Northern face of Jobs Sister Luther Pass Area (including Job and Freel) Avalanche Observation Public
03/13/2019 - 13:00 Elephants Hump Carson Pass Area Snowpack Observation Scoured NE facing slope near the ridgeline Ice crust exposed by wind scouring on the ridge NE wind transport off of Red Lake Peak ECTN on a previously wind-loaded NE facing test slope. Forecaster
03/13/2019 - 12:00 Davis Creek Mount Rose Area Avalanche Observation wet debris visible in runout Public
03/12/2019 - 12:15 South side of Jakes West Shore Area Snowpack Observation Public
03/12/2019 - 12:00 Horse Meadow Luther Pass Area (including Job and Freel) Snowpack Observation Professional Observer
03/12/2019 - 12:00 Mt. Judah Donner Summit Area Snowpack Observation ECTP 17 on a small wind-loaded test slope. ECTP 19 on a small wind-loaded test slope. Small skier triggered cracking in a newly formed surface wind slab. Variable sun crust on a westerly aspect. Wind-affected snow surfaces. Blowing snow along the summit ridgeline of Mt. Judah Firm icy surface on a wind scoured W aspect. Large cornices overhanging Wildflower Ridge. I decided to go back and around them on the uphill side and stayed very far from the edge of the ridge when I did. Weather moving in from the West to the East. Forecaster
03/11/2019 - 17:00 Castle Peak Donner Summit Area Snowpack Observation Small fragile new windslabs Rime Ice falling from rocks. It wasn't quite warm enough to form rollerballs. SW aspect at 5pm Public
03/11/2019 - 12:00 Spooner thru Kingsbury East Shore Area Snowpack Observation Professional Observer
03/11/2019 - 12:00 Tamarack Peak Mount Rose Area Snowpack Observation Thick low to mid level clouds during the morning hours on Tamarack Peak. East Ridge of Tamarack Peak with cornices and some recent NE wind scouring. Cornice collapses partially covered by additional new snow. Forecaster
03/11/2019 - 10:30 Maggies Peak Desolation Wilderness Area (including Emerald Bay) Snowpack Observation Clouds lingering over Maggies south Lightly rimed trees near Maggies ridge Professional Observer
03/11/2019 - 10:00 Anderson Peak Cabin Creek, Deep Creek, or Pole Creek Area Avalanche Observation Wind slab avalanche size D1 on NE aspects triggered by intentional cornice collapse. ECTP-18 down 40 cm on WNW aspect. Fresh wind slab P hard aver 4F-. Melt freeze crust on solar aspects from March 10 at about 7,500'. Forecaster
03/10/2019 - 19:00 Ebbetts Pass Proper Ebbetts Pass Area Avalanche Observation Public
03/10/2019 - 13:00 Fire Plug Mount Rose Area Snowpack Observation 2-3 foot cornices would collapse with a few kicks After undercutting, this wind lip did not crack or break when jumped on Public


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