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
02/27/2019 - 12:15 Brockway Summit Mount Rose Area Snowpack Observation  ECTX. Lines are markign accumulation from the last two snow storms. PST 55/100 on the new old snow interface. Public
03/16/2019 - 11:30 Jakes Peak South Side West Shore Area Snowpack Observation Not corn, but decently soft. A steady stream of skiers helped reduce the size of any loose wet sloughs Corn snow at noon at 6,700 feet starting to get soft. Public
04/04/2019 - 13:00 Johnson Canyon Donner Summit Area Snowpack Observation Cracking/punching on ascent Wet, granular snow on surface at lower elevation Rounds are ~2mm Hand pit showing saturated snow with ~2cm layer of newer snow on top Roller balls on East facing aspect across canyon Public
02/02/2019 - 11:30 Incline Lake Peak Mount Rose Area Avalanche Observation ECTN4 at 6cm down in the new snow. Shooting cracks along the summit. This crack broke within the new snow, not at the new old snow interface. Skier triggered avalanche. Bed surface was in the most recent snow. Public
01/16/2019 - 11:00 Red Lake Carson Pass Area Avalanche Observation Shooting crack that triggered slide Crack ran about 50 yards in a curve to the starting point, a wind slab next to trees Looking down looking down and behind Looking behind us down the road we skinned up. The slide moved uphill from its original start Public
02/05/2019 - 13:00 Rubicon Peak West Shore Area Snowpack Observation Public
02/18/2019 - 15:15 Schallenberger Ridge Donner Summit Area Snowpack Observation surface hoar Public
03/04/2019 - 11:30 Roundtop area, steeps NW of Winemucca lake above drainage to Woods lake Carson Pass Area Avalanche Observation Public
03/24/2019 - 10:30 Judah Peak Donner Summit Area Avalanche Observation We saw 5 more small slides like this above the snow sheds that seemed to be from yesterday. Wind effect along the Judah Ridge Two slides could be seen looking back at Judah Peak from Donner Peak in at noon. Public
01/18/2019 - 12:30 Powderhouse Luther Pass Area (including Job and Freel) Snowpack Observation Public
02/22/2019 - 09:30 Schallenberger Ridge Donner Summit Area Snowpack Observation The pit from our shovel tap tests. The pink line is the new old snow interface that begrudging, but cleanly broke New rime ice on icicles. Did not affect our travel plans, but was fun to see. Public
03/09/2019 - 11:00 Hidden Peak West Shore Area Avalanche Observation Jake's Peak wind slab on N aspect Wind slab remote triggered or natural at ridgeline Public
12/04/2018 - 14:30 Tamarck Peak East Ridge Mount Rose Area Snowpack Observation Public
02/23/2019 - 12:15 Herlan Peak East Shore Area Snowpack Observation Public
03/10/2019 - 12:00 Ralston Peak Desolation Wilderness Area (including Emerald Bay) Snowpack Observation Public


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