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
03/01/2019 - 12:00 Tamarack Peak Mount Rose Area Snowpack Observation Large cornices over Hourglass Bowl Relay Peak Forecaster
03/01/2019 - 11:30 Castle Peak Donner Summit Area Avalanche Observation Large debris pile above tree. Public
03/01/2019 - 11:00 Castle Peak Donner Summit Area Snowpack Observation Settlement cracks Extreme wind features on SE slope Small cornices breaking with much force Massive, layered cornice Public
02/28/2019 - 13:00 Frog Lake Ridge Carson Pass Area Snowpack Observation Professional Observer
02/28/2019 - 11:00 Mt. Judah Donner Summit Area Snowpack Observation Large reactive cornices along with active blowing snow. Shooting cracks in wind loaded terrain. ECTP-27 on a wind slab down 22cm. ECTP-29 on a wind slab down 55cm. Looking along the Mt. Judah ridgeline with blowing snow and limited visibility. Cracking within the new upside down storm snow. Forecaster
02/28/2019 - 10:45 Five miles east of China Wall OHV Outside of the Forecast Area Avalanche Observation Public
02/27/2019 - 16:30 Waterhouse Peak Luther Pass Area (including Job and Freel) Snowpack Observation Snow around many trees indicated minor settlement. Wind effect in open terrain above 9000', indicating winds out of S/SE. Moderate shooting crack on undercut, wind-loaded slope. Slab was ~25cm thick. Guide
Alpenglow Expeditions
02/27/2019 - 12:30 Echo Peak Echo Summit Area Snowpack Observation Public
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
02/27/2019 - 07:30 Poulsen's Peak Cabin Creek, Deep Creek, or Pole Creek Area Avalanche Observation Public
02/27/2019 - 04:00 Trestle Peak Donner Summit Area Avalanche Observation Public
02/26/2019 - 16:00 Picnic Rock Brockway Mount Rose Area Snowpack Observation Public
02/26/2019 - 14:30 Powderhouse Peak Luther Pass Area (including Job and Freel) Snowpack Observation This wind feature is notable because it is at the base of Powderhouse only a couple hundred feet from the road. Large potentially dangerous tree bombs were widespread. This one is sitting directly on the existing skin track. After kicking on a wind feature over a tree well there was minor slab failure. Professional Observer
02/26/2019 - 12:00 Polaris Point Blackwood Canyon or Ward Canyon Area Avalanche Observation Forecaster
02/26/2019 - 06:00 Andesite Peak Donner Summit Area Avalanche Observation NE aspect below treeline with 2 to 3 ft crown visible. Slope angle ranged from 32 to 44 degrees. Skier's left side of crown and debris. Skier's right side of crown and debris. Crown of 2-3 feet with 8 inches of storm snow on bed surface. ECTX and CTH-Broken results in crown at 11:45am. This is the maximum amount of cracking we observed today in areas of wind slab. Ski cuts such as this in wind loaded terrain above treeline produced no results. Forecaster


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