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 button above.
Date and time of observation or avalanche occurrence Location Region Observation Type Photos Snowpack, Avalanche, Weather Videos Snowpit videos (tests, etc) Observation made by
01/16/2020 - 16:15 Ward canyon Blackwood Canyon or Ward Canyon Area Snowpack Observation ECTP-17 @ 105cm / HS 140 Skin track re-filled after 1 hour Educator
Tahoe Mountain School
03/06/2020 - 15:00 Powderhouse Luther Pass Area (including Job and Freel) Snowpack Observation Educator
Lake Tahoe Community College - Wilderness Education
12/08/2019 - 13:30 Incline Lake Peak Mount Rose Area Snowpack Observation approximately 3mm surface hoar down 65cm, near dropped pin Educator
Lake Tahoe Community College - Wilderness Education
01/23/2020 - 13:00 Waterhouse Peak Luther Pass Area (including Job and Freel) Snowpack Observation Small (1-2mm) surface hoar observed near 7800', NE aspect, 10:00am Large (7-9mm) surface hoar observed near 9380', NE aspect, 2:00pm Educator
Lake Tahoe Community College - Wilderness Education
01/26/2020 - 06:00 Above Round Lake Luther Pass Area (including Job and Freel) Snowpack Observation Small pit done about 4:00 pm last night before it started raining. Top 5cm of snow wet due to above freezing temperatures. Chowder snow this morning around 9:00AM Educator
Lake Tahoe Community College - Wilderness Education
02/08/2020 - 13:00 Castle Peak Donner Summit Area Snowpack Observation Snowpack structure on a E aspect @ 7700 ft Educator
Tahoe Mountain School
12/28/2019 - 13:15 Mayflower Ridge Donner Summit Area Snowpack Observation Small windslab on test slope Crown on test slope Wind scouring along ridgelines Another image of widespread wind affect in the Donner Peak area CT19 down 20cm on old (rounding) near surface facets buried during last storm cycle Educator
Tahoe Mountain School
12/20/2019 - 03:15 Wild flower Ridge Donner Summit Area Snowpack Observation Educator
Alpine Skills International (ASI)
01/23/2020 - 10:30 Stoney Ridge West Shore Area Snowpack Observation Forecaster
02/18/2020 - 12:00 Silver Peak Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Tiny areas of wind drifted snow up to 0.5 inches deep from recent SW wind event. Upper snowpack breakable crust and facets on below treeline N aspects. Forecaster
12/14/2019 - 11:45 Hidden Peak West Shore Area Snowpack Observation Dense wind affected new snow near the summit with minimal ski penetration. Poor conditions at 6,600'. Improving conditions at 7,100'. Good coverage at 7,500'. Dec 12 rain crust on summit ridge exposed by wind scouring. Dec 12 rain crust in the snowpit at 9,100'. Forecaster
04/17/2020 - 10:30 Jakes Peak West Shore Area Snowpack Observation Boot top deep wet snow at 8500 ft. at 10:30 am. Patchy snow coverage below 7200 ft. Overview of the east side of Jakes above 7200 ft. Forecaster
11/20/2019 - 11:30 Tamarack Peak Mount Rose Area Snowpack Observation Strong NE winds scouring northerly aspects on exposed ridge. Hourglass Bowl scoured down to mostly bare ground and rock. S-SW-W aspects getting wind loaded by strong NE winds right over the ridge of Hourglass Bowl. Minor cracking in fresh wind slabs formed today. Small areas of faceted snow from early season snow in September/October. Forecaster
02/27/2020 - 11:30 Mt. Judah Donner Summit Area Snowpack Observation Early signs of a developing loose wet avalanche problem at 11:30 am on at S aspect at ~7,800'. Superficial refreeze of the top 2 inches of the snowpack with wet snow below in areas under forest canopy. Forecaster
01/17/2020 - 14:00 Munchkins Area Blackwood Canyon or Ward Canyon Area Snowpack Observation Ski kick triggered shooting cracks on ENE facing wind-loaded slope. Skier triggered shooting cracks on N facing wind loaded slope. Skier triggered shooting cracks on a NW facing slope. Forecaster

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