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 Videos Observation made by
03/09/2016 - 10:30 Andesite Peak Donner Summit Area Snowpack Observation Forecaster
01/16/2017 - 10:00 Herlan Peak East Shore Area Snowpack Observation Avalanche debris on the uphill side of trees.Blowing snow in the distance on Freel Peak. Forecaster
01/06/2016 - 13:00 Rubicon Peak West Shore Area Snowpack Observation Forecaster
02/15/2016 - 11:30 Silver Peak Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Forecaster
04/11/2016 - 14:30 Jakes Peak West Shore Area Avalanche Observation
Forecaster
11/14/2015 - 12:15 Wildflower Ridge Donner Summit Area Snowpack Observation Forecaster
03/02/2017 - 11:00 Rose Knob Mount Rose Area Snowpack Observation Wet loose avalanche skier triggered into gully terrain trap.  E aspect, 7650', 11:56am.Bed surface of loose wet.Looking up at Rose Knob.  Previous wet loose avalanches in gullies. Forecaster
02/18/2016 - 07:00 Silver Peak Cabin Creek, Deep Creek, or Pole Creek Area Avalanche Observation
Forecaster
05/05/2017 - 10:00 Castle Peak Donner Summit Area Snowpack Observation Ankle deep wet snow on a S aspect just before 9 am. Boot top deep wet snow on a N aspect near 8800 ft. at 10:00 amMid shin deep wet snow at 11 am. Forecaster
11/18/2016 - 11:30 Tamarack Peak Mount Rose Area Snowpack Observation , 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
12/27/2015 - 12:00 Stanford Rock Blackwood Canyon or Ward Canyon Area Snowpack Observation Forecaster
02/01/2016 - 13:00 Carpenter Peak Independence Lake Area Snowpack Observation Forecaster
01/31/2017 - 12:30 Waterhouse Peak Luther Pass Area (including Job and Freel) Snowpack Observation Very minor wind transport of old snow under SW wind gusts.Less than 1 cm thick melt freeze crust on S aspect at 9,400'. Forecaster
03/14/2017 - 13:00 Below Eagle Buttress Desolation Wilderness Area (including Emerald Bay) Snowpack Observation March 14-Glide crack as seen from Emerald BayMarch 16-Glide crack as seen from Emerald BayMarch 18-Glide crack as seen from Emerald BayMarch 23-Glide crack as seen from Emerald Bay post storm.March 28-Glide crack as seen from Emerald Bay - Possibly some recent activity near one of the middle cracks..April 3-Glide crack as seen from Emerald Bay.April 6-Glide crack as seen from Emerald Bay. Forecaster

Pages

Subscribe to Central Sierra Nevada / Lake Tahoe Snowpack, Weather, and Avalanche Observations for California and Nevada from SAC