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 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
01/06/2019 - 11:15 Hidden Peak Cirque West Shore Area Avalanche Observation Public
01/23/2019 - 13:00 Ginny Creek and Slab cliffs Mount Rose Area Snowpack Observation Strong NW winds loading SE slopes Strong winds from multiple directions over the last few days have stripped snow from terrain constrictions on ridge tops ie “saddles” Wet surface snow and above freezing temps at 10 am Public
02/10/2019 - 11:30 Cottonwood Hill Sawtooth Ridge to Tahoe City Snowpack Observation ECTN14 @ 45cm down. After 30 taps and no failure, we pulled on the back of the column and it broke cleanly. Public
01/11/2019 - 10:30 Castle Peak Donner Summit Area Snowpack Observation Skiers right side of the crown drawn in pink. Slide appeared to start close to the ridge Small newly formed cornices easily breaking on the way up. 3x3 foot 4 inch deep wind slab breaking, near cornice photo, on the ascent. A crown from a smaller slide was seen in close proximity to where the larger avalanche occurred. Photo taken prior to the large slide.  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
02/01/2019 - 10:30 Jakes West Shore Area Snowpack Observation Public
02/16/2019 - 12:00 Powderhouse Luther Pass Area (including Job and Freel) Snowpack Observation Public
12/19/2018 - 09:00 N of Twin Sentinels Carson Pass Area Snowpack Observation Public
01/15/2019 - 13:15 Incline lake peak Mount Rose Area Snowpack Observation Calm to light winds on Ridge North aspect unsupported convex test slope loose dry/sluff Very small loose dry on 40 degree east aspect Public
12/02/2018 - 10:00 Broken Glass Mount Rose Area Snowpack Observation Public
12/23/2018 - 14:00 Scott’s peak Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Public
02/21/2019 - 07:30 Jake’s Peak West Shore Area Snowpack Observation Surface hoar Graupel Public
12/28/2018 - 12:00 Chickadee Ridge Mount Rose Area Snowpack Observation 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
01/26/2019 - 14:45 The Grills AKA Tom's Meadow Independence Lake Area Snowpack Observation Public


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