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
02/17/2019 - 13:00 Below Andesite Peak Donner Summit Area Snowpack Observation Public
01/16/2019 - 15:00 Tamarack Peak Mount Rose Area Avalanche Observation Look closely and you can see a size 2 avalanche below the ridge Shooting Cracks from Ski Tips Can you Spot the Surface Hoar? Obvious layer found about 65cm Down Public
02/06/2019 - 11:00 Centerville Peak East Shore Area Snowpack Observation Old avalanche debris from a cornice fall that was partially covered by new snow Deep and soft new snow Evidence of partially buried avalanche debris is highlighted Snow coverage near 5,400 ft elevation in the Carson Valley Public
12/11/2018 - 12:45 Tamarack Peak Mount Rose Area Snowpack Observation Heavy Traffic in the Hourglass Evidence of wind transport and loading in Broken Glass Thin snow cover (40cm) w vegetation showing and sun affected on SE aspect Public
02/21/2019 - 07:30 Jake’s Peak West Shore Area Snowpack Observation Surface hoar Graupel Public
02/09/2019 - 15:00 Brockway Summit Sawtooth Ridge to Tahoe City Snowpack Observation Small cracking in a very soft slab. The larger cracks we saw later were approximately the same depth. Public
11/23/2018 - 10:30 Grouse Rock Blackwood Canyon or Ward Canyon Area Snowpack Observation Public
02/24/2019 - 12:00 Jake's Peak West Shore Area Snowpack Observation Public
12/17/2018 - 13:00 Castle Peak Donner Summit Area Snowpack Observation Small windslab under 4cm of soft snow cracking The wind affected layer that broke in the previous photo. Soft snow removed on left side to show the slab. ECTN 12 @ the new windslab layer. 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
01/26/2019 - 14:45 The Grills AKA Tom's Meadow Independence Lake Area Snowpack Observation Public
02/12/2019 - 12:30 The burn in Meyers Echo Summit Area Avalanche Observation Public
12/01/2018 - 07:45 Castle Peak Donner Summit Area Avalanche Observation Public
02/26/2019 - 16:00 Picnic Rock Brockway Mount Rose Area Snowpack Observation Public
01/12/2019 - 11:00 Needle Peak Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Strong winds and wind transport on Needle Peak this morning Some windslab cracking near the ridgeline A fairly large old crown at Needle Lake. Debris have since been buried under new/blowing snow Some roller balls at 2:30 on south aspects Public

Pages

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