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. This program is available as a free download at A video on how to download and use this program is available here. Please send us your observations using the buttons below.

Location Region Observation Type Date and time of observation or avalanche occurrencesort ascending Avalanche observation video Avalanche photos Snowpit videos (tests, etc) Snowpack photos Snowpit or crown profile photo or graph Observation made by
Fireplug/Mt. Rose Mount Rose Area Snowpack Observation 03/29/2017 - 12:00 Small skier triggered loose wet instabilities on a SE aspect at 9700 ft. at 11:45 am 1-2 inches of wet snow on top of a supportable melt-freeze crust on a S-SE aspect at 8800 ft. at 10:30 am Deep 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 pm Loose 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
Third Creek Drainage/Jennifer Street Mount Rose Area Avalanche Observation 03/28/2017 - 12:50 View down from near the trigger point. Public
Incline Lake Peak Mount Rose Area Snowpack Observation 03/28/2017 - 12:00 Wind scouring near the summit of Incline Lake Peak. False color image of small loose wet point releases near rocks on a sun-exposed SE aspect at 8400 ft. Forecaster
Red Lake Peak Carson Pass Area Snowpack Observation 03/28/2017 - 11:00 Firm conditions, not in melt phase on SSE aspect at 10:45 am. Forecaster
Tamarack Peak Mount Rose Area Snowpack Observation 03/27/2017 - 13:00 Wind slabs 8-12'' on E aspects, 9600'. Skin track refill occurring after 45 minutes Forecaster
Lincoln Ridge Yuba Pass Area Snowpack Observation 03/27/2017 - 10:30 Sunny skies in the Yuba Pass area with signs of rapid warming becoming evident at 9:45 am. Kicking small cornince sections on NE aspect at treeline at 7,800' produced no results on wind loaded slope below. Signs of rapid warming/wet snow instability on SE aspect test slope at 7,800' at 10:50 am. Forecaster
Negro Canyon Donner Summit Area Snowpack Observation 03/26/2017 - 13:00 Guide
Tahoe Mountain School
Elephant's Hump Carson Pass Area Snowpack Observation 03/26/2017 - 11:00 Difficult to see in photo, but minor amounts of blowing snow visible in near and above treeline areas. Sun/melt-freeze crust that existed in the vast majority of areas, including on some steeper and/or shaded N aspects. Signs of settlement of recent storm snow. Forecaster
Talking Mountain/Becker Ridge Echo Summit Area Snowpack Observation 03/25/2017 - 16:00 Public
Negro Canyon Donner Summit Area Snowpack Observation 03/25/2017 - 14:00 Guide
Tahoe Mountain School
Outside of boundary in Snow Valley Bear Valley Area Avalanche Observation 03/25/2017 - 13:22 Public
NE slope, Silver Peak Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation 03/25/2017 - 13:00 Public
Mt. Tallac-The Cross Desolation Wilderness Area (including Emerald Bay) Avalanche Observation 03/25/2017 - 12:30 Skier descending onto slope before avalanche.Looking down avalanche debris.Looking up avalanche debris towards crown.Part of the crown. Forecaster
Mt. Tallac Desolation Wilderness Area (including Emerald Bay) Snowpack Observation 03/25/2017 - 12:00 Rapid warming at 9am with full sun.  Loose wet activity occurring on E aspects. Previous wind slab activity from yesterday.  NE aspect, 9000'. Skier triggered loose wet activity, E aspect, 8400', at 11am. Skier triggered loose wet activity on NE aspect, 7500', at 11:15am. Forecaster
Cathedral Bowl Castle Peak Donner Summit Area Avalanche Observation 03/25/2017 - 11:30 Public


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