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.

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
near watson lake Snowpack Observation 01/22/2017 - 14:15 Public
Deep Creek Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation 01/22/2017 - 14:15 ECTP on Storm Slab instability in Deep Creek Small shooting crack in sheltered below treeline terrain at 7000 ft. as the interface between the dense heavy snow on top of the snowpack and the lighter snow below it failed. Small wind slab crack on a N-NE facing test slope at 8200 ft. Large cornice failure triggered by a ski kick. No wind slabs released on the slope below. Debris from the cornice failure Forecaster
Negro Canyon Donner Summit Area Avalanche Observation 01/22/2017 - 11:20 Witnessed remote trigger wind slab avalanche/test slope failure from ridgetop (SE aspect, 6,880')..Small natural wind slab avalanche futher up ridge from remote trigger test slope failure (ESE aspect, 7,000').Signs of recent natural cornice collapse and subtle evidence of a mostly refilled crown line (NE aspect, 7,240')Rapid storm snow settlement at 6,500. Forecaster
Incline Lake Peak Mount Rose Area Avalanche Observation 01/21/2017 - 15:30 Crown of smaller test slopeSmall slide on test slope with 40+ deg slopeShooting  crack near summit that released when triggered with cornice drop Public
East Schallenberger Ridge Donner Summit Area Snowpack Observation 01/21/2017 - 14:00 Guide Tahoe Mountain School
Manzanita Bowl, Slide Mtn Mount Rose Area Avalanche Observation 01/21/2017 - 13:20 Crossing couloir with slide below skierSkiing debris field after controlled ski cut release24" diameter tree avy damage from last storm cycle. Debris already buried Public
Lower Manzanita Bowl Mount Rose Area Avalanche Observation 01/21/2017 - 13:05 Storm slab on side loaded small ridge top. Search and Rescue in background Public
Luther Pass Luther Pass Area (including Job and Freel) Snowpack Observation 01/21/2017 - 12:00 A small, shallow, natural triggered storm slab. Ski cuts immediately adjacent to this, and on a similar feature nearby, did not produce further propagation. Kicking test slopes showed obvious loose instabilities but snow was too un-cohesive to propagate. Professional Observer
Jakes Peak West Shore Area Snowpack Observation 01/21/2017 - 11:00 Test slopes resulted in no slab formation. Minor cracking in wind loaded areas by mid day. Wind and snow transport increased by mid day. Small natural loose dry avalanches occurring in steep protected treed areas. Forecaster
Tamarack Peak Mount Rose Area Avalanche Observation 01/21/2017 - 10:20 Wind slab avalanche triggered from the lower angle ridge on a N-NE aspect 38 degree slope.Long shooting crack triggered by a ski kick on a wind loaded test slopeAnother smaller wind slab triggered by a ski kick on a N facing wind loaded test slope Forecaster
Andesite Peak Donner Summit Area Avalanche Observation 01/20/2017 - 15:45 D2 Wind slab avalanche triggered by a small cornice piece Small avalanche triggered by a larger piece of corniceCracking in the storm snow on in below treeline terrain Forecaster
Jakes Peak West Shore Area Avalanche Observation 01/20/2017 - 10:30 Skier triggered wind slab avalanche.  Crown line test pit on right.  Skier triggered wind slab.  Crown up to 2' deep.  7800', NE aspect.Test Pit at 8200', NE aspect.  ECTN's.  HST=95cm. Forecaster
Tram Ridge / Shirley canyon Cabin Creek, Deep Creek, or Pole Creek Area Avalanche Observation 01/19/2017 - 14:30 Skier triggered storm slab avalanche_20170119 Guide Alpenglow Expeditions
Jakes Peak West Shore Area Avalanche Observation 01/19/2017 - 11:00 MVI 3378 Small (D1) natural storm slab avalnche.  7700', NE aspect,4-6'' deep.Skier triggered storm slab on small test slope.Another small natural storm slab avalanche.  8700', NE aspect, 4-6'' deep.One of numerous trees with avalanche debris and broken branches from previous larger avalanches in this area.Small (D1) storm slab avalanche over skin track.  8800', NE aspect. Forecaster
Castle Peak Donner Summit Area Snowpack Observation 01/18/2017 - 11:00 Skier triggered wind slab @ 11am.  8300', N/NW aspect, 6-8'' crown line. Cornice formation along ridge at 10:30am. Debris from small wind slab failure. Forecaster