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
12/16/2016 - 12:30 Andesite Peak Donner Summit Area Snowpack Observation Small localized cracking in wind loaded terrain.  E aspect 8200'Small cornice kicks did not cause any wind slab failure.  8200', E aspect.ECTN and ECTP in wind loaded E aspect.  8200'.Cracking around skis into non frozen rain crust Forecaster
04/18/2017 - 12:30 Hidden Peak West Shore Area Snowpack Observation Small loose wet avalanches resulting from cornice pieces dropped onto a NE facing wind-loaded slope near 9100 ft. Small loose wet avalanches resulting from cornice pieces dropped onto a NE facing wind-loaded slope near 9100 ft. Loose wet instabilities on a N facing slope at around 7400 ft. Ski cuts triggered small cracking on a wind-loaded test slope near the summit of Hidden Peak. Forecaster
01/11/2018 - 11:45 Rubicon Peak and Peak 9,269' West Shore Area Snowpack Observation N aspect at 8,180'. Strong and supportable crusts over wet facet layer. Minimal reactivity.Snowcover looking upslope on N aspect at 8,000'.Unexpected snow shower activity at 9,080' on Peak 9,269'. Forecaster
12/26/2015 - 13:00 Silver Peak Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Forecaster
02/05/2018 - 12:30 Red Lake Peak Carson Pass Area Snowpack Observation Previous point release loose wet avalanche activity at 9000' on E aspect.Small roller balls on test slope.  E aspect at 11:45am. Forecaster
03/01/2016 - 12:45 Jakes Peak - South Side West Shore Area Snowpack Observation Forecaster
11/21/2016 - 12:00 Castle Peak Donner Summit Area Snowpack Observation Forecaster
03/01/2017 - 14:30 Becker Peak Echo Summit Area Snowpack Observation Large intentionally skier-triggered cornice collapse. The impact and weight of the cornice did not produce cracking in the wind-loaded test slope. Ski poles are in the photo for scale.Runnels indicating warming in the snowpack on a S aspect.Small roller balls on a S aspect above Echo Lake near a cliff band. Forecaster
03/22/2018 - 11:00 Andesite Peak Donner Summit Area Snowpack Observation Shooting crack on an E - NE facing wind-loaded slope at 8100 ft. Rain runnels at 7500'. Large cornice drops did not cause wind slab failure.  Heavy, wet, deep snow existed at 8200' on the top of Andesite. Forecaster
03/29/2017 - 12:00 Fireplug/Mt. Rose Mount Rose Area Snowpack Observation Small skier triggered loose wet instabilities on a SE aspect at 9700 ft. at 11:45 am1-2 inches of wet snow on top of a supportable melt-freeze crust on a S-SE aspect at 8800 ft. at 10:30 amDeep unsupportable wet snow on a S-SE aspect at 10:40 am at 9000 ft. Small skier triggered roller balls and pinwheels on a NW-N aspect at 8700 ft. at 12:15 pmLoose wet point releases on the E aspects in the sun and soft cold snow on the shaded areas that face north at 9:45 am Forecaster
12/04/2015 - 11:30 Rubicon Peak West Shore Area Snowpack Observation Forecaster
11/07/2017 - 11:30 Barker Peak Blackwood Canyon or Ward Canyon Area Snowpack Observation Snowpit locationN aspect snowcover of 11 inches at ~8,000'. Forecaster
01/19/2018 - 12:45 Castle Peak | Andesite Ridge Donner Summit Area Snowpack Observation Minor cracks that barely extend away from my skis on a traditionally wind-loaded test slope on Andesite Peak. Forecaster
02/13/2018 - 12:00 Grouse Rock Blackwood Canyon or Ward Canyon Area Snowpack Observation Wind scoured E aspect at 8300' on Grouse Rock.Very small superficial wind slab in near treeline terrainWind effected surface snow.Wind scoured N aspect at 8200'. Forecaster
02/15/2017 - 12:00 Incline Lake Peak Mount Rose Area Snowpack Observation Forecaster

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