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 occurrence Avalanche observation video Avalanche photos Snowpit videos (tests, etc) Snowpack photos Snowpit or crown profile photo or graph Observation made by
Hidden Peak West Shore Area Snowpack Observation 01/14/2017 - 14:00 Public
Castle Peak Andesite Ridge Donner Summit Area Snowpack Observation 01/14/2017 - 13:00 Public
Ta,arack Peak Mount Rose Area Snowpack Observation 01/14/2017 - 12:00 Surface hoar was widespread in the area Thin rime crust on the snow surface with surface hoar on top of it. Forecaster
Billys Avalanche Observation 01/14/2017 - 09:08 Skin track set this off Public
Frog Lake Ridge Carson Pass Area Snowpack Observation 01/13/2017 - 16:00 A very thin crust (likely created by freezing fog/mist) on top of fresh snow. Sastrugi growing into the East wind. Settlement cones were widely observed. A west facing slope exhibiting wind slab development. Professional Observer
Donner Peak Donner Summit Area Snowpack Observation 01/13/2017 - 12:30 Wind slab avalanche skier triggered on test slope.  W aspect, 7500', 35 degree slope. 40' long shooting cracks in wind loaded terrain. Small wind loaded test slopes showing slab failure.  W aspect. Settlement cones around trees. Forecaster
N Judah Donner Summit Area Snowpack Observation 01/13/2017 - 12:30 Public
Indian Valley Ebbetts Pass Area Snowpack Observation 01/13/2017 - 12:00 Professional Observer
Powderhouse Luther Pass Area (including Job and Freel) Snowpack Observation 01/12/2017 - 14:45 Dry loose slough on steeper slopes Cornices and wind loading at ridge Rimming at ridgeline Observing rain crusts near 300cm from top Wet saturated snow near crusts near 300cm from top Public
Wildflower Ridge Donner Summit Area Snowpack Observation 01/12/2017 - 12:30 Fairly large sections of cornice along the ridge. Small loose dry triggered by intentional cornice collapse. Forecaster
Horse Meadow Luther Pass Area (including Job and Freel) Snowpack Observation 01/12/2017 - 12:00 Professional Observer
Deep Creek Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation 01/12/2017 - 12:00 Loose dry sluff triggered by a small cornice dropped onto the slope. The wind loaded test slope that cracked and failed with a hard ski kick after previously being undercut. Settlement crack around the base of a tree. Forecaster
East face Mt Lincoln Donner Summit Area Avalanche Observation 01/11/2017 - 14:30 Untitled Public
Negro Canyon Donner Summit Area Snowpack Observation 01/11/2017 - 13:30 Ongoing wind transport between snow showers. Minor cracking on wind loaded test slope. Small skier triggered wind slab failure on test slope. Forecaster
Mt. Rose Highway Mount Rose Area Avalanche Observation 01/11/2017 - 12:00 Relay Peak.  East Face, 10,200'.Fireplug.  E/SE. 9200'.Rose Knob/3rd Creek. S aspect. 9400'. Incline Lake Peak.  SE aspect, 9200'.Mt. Houghton.  S/SE aspect, 10,000'.Mt. Houghton.  SE aspect, 8800'. Forecaster


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