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.
Date and time of observation or avalanche occurrence Location Region Observation Type Photos Snowpack, Avalanche, Weather Videos Snowpit videos (tests, etc) Observation made by
04/01/2019 - 11:00 Rubicon Peak West Shore Area Snowpack Observation Ankle to shin deep boot pen at 9:30am at trailhead with a poor overnight refreeze. Cloud cover to the south of Rubicon Peak Cloud cover to the north of Rubicon Peak Forecaster
03/31/2019 - 11:30 Twin Peaks Blackwood Canyon or Ward Canyon Area Snowpack Observation Very wet snow and small rollerballs on a shallow S facing slope at 1pm. Public
03/31/2019 - 11:00 Castle Peak Donner Summit Area Snowpack Observation Good snow coverage on south slopes on Castle Peak Thin breakable melt freeze crusts with colder unconsolidated snow below. Forecaster
03/30/2019 - 12:30 Mt. Rose Mount Rose Area Avalanche Observation Public
03/30/2019 - 11:00 Chickadee Ridge Mount Rose Area Snowpack Observation NW aspect near treeline terrain scoured by recent SW winds. NW aspect near treeline terrain scoured by recent SW winds. Surface hoar 10mm+ persisting on N aspects. Breakable crust on E-SE-S-SW-W aspects. Forecaster
03/30/2019 - 08:30 Donner Peak Donner Summit Area Snowpack Observation I kicked a few small wind loaded test slopes and this was the extent to cracking seen. I first had to undercut this slope to get it to crack. Public
03/30/2019 - 03:00 Elephant Back Carson Pass Area Avalanche Observation Public
03/29/2019 - 14:30 Hope Valley/Blue Lakes Carson Pass Area Snowpack Observation Obvious wind activity Close up of what appeared to be a small avalanche. Public
03/29/2019 - 13:30 Galena Bowls - Mt. Rose Mount Rose Area Snowpack Observation Skier triggered cracking on a previously undercut low angle wind-loaded slope. Cloud cover during the day in this area seemed to limit the formation of loose wet snow problems. Scoured area along the ridge with a deposition zone for wind transported snow below the skier. The arrow shows the direction that the wind transported the snow during the recent storm. Forecaster
03/29/2019 - 12:00 Indian Valley Ebbetts Pass Area Avalanche Observation Professional Observer
03/29/2019 - 11:00 Trimmer Peak Carson Pass Area Snowpack Observation Small cracks on the edge of a wind blown feature. Small windslab on a steeper convexity test slope. Same test slope. My partner noticed this as terrain irregularity with signs of wind effected snow. Professional Observer
03/29/2019 - 10:00 Judah Peak Donner Summit Area Avalanche Observation Wind slab avalanche on the east face of Judah Peak caused by an oven sized cornice failure Public
03/29/2019 - 10:00 Grey creek (Bronco) chutes Mount Rose Area Avalanche Observation Public
03/28/2019 - 15:00 Brockway Summit Mount Rose Area Snowpack Observation Thin sun crust on top of the new snow on a N facing aspect Roller balls almost possible on a micro west aspect at 3:00 at 7,000 feet. Public
03/28/2019 - 13:15 Just north of Mt Lola Independence Lake Area Avalanche Observation Public

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