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
02/02/2018 - 10:15 Lincoln Valley Yuba Pass Area Snowpack Observation Recent roller balls created by snow falling from sun exposed trees onto colder shaded N aspect terrain did not produce any degree of loose wet avalanche activity. Forecaster
02/23/2016 - 12:30 Lincoln Ridge Yuba Pass Area Snowpack Observation Forecaster
12/30/2016 - 12:00 Lincoln Ridge Yuba Pass Area Snowpack Observation Forecaster
11/29/2016 - 11:00 Lincoln Ridge Yuba Pass Area Snowpack Observation Forecaster
03/27/2017 - 10:30 Lincoln Ridge Yuba Pass Area Snowpack Observation 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
01/23/2018 - 11:00 Lincoln Ridge Yuba Pass Area Snowpack Observation False color image showing small skier triggered cracking due to the surface hoar failure in an area where the 4cm of snow above the surface hoar was slightly denser. N aspect 7600 ft. Wind scoured surfaces along the ridgeline at 7800 ft. Forecaster
02/07/2018 - 10:35 Lincoln Valley Yuba Pass Area Snowpack Observation Thin melt-freeze crust on shaded N aspect at ~7,350'.Cold unconsolidated snow under the melt freeze crust on same N aspect at ~7,350'. Forecaster
12/17/2017 - 12:30 Lincoln Ridge Yuba Pass Area Snowpack Observation Variable wind scoured snow surfaces in open N-NE facing areas at 7600 ft.Firm rain crust exposed by wind scouring on a NE aspect near the ridgeline.Snow coverage at 7200 ft. Near surface facets on northerly aspects. Forecaster
01/28/2017 - 12:00 Lincoln Ridge Yuba Pass Area Snowpack Observation Surface hoar near a creekLarge cornice pieces dropped onto a test slopeScoured surfaces along the ridgeline @ 7680 ft.Settlement cracks around trees Forecaster
01/04/2016 - 12:00 Lincoln Ridge Yuba Pass Area Snowpack Observation Forecaster
12/06/2015 - 12:30 Lincoln Ridge Yuba Pass Area Snowpack Observation Public
03/27/2016 - 12:00 Lincoln Ridge Yuba Pass Area Snowpack Observation Forecaster
11/08/2017 - 11:15 Lincoln Ridge Yuba Pass Area Snowpack Observation Snowpit location with 50cm snow depth, some previous wind loading.Snowcover of about 14 inches at about 7,350'FS Rd 12 at 6,900'. Rd plowed for logging operations. Forecaster
11/29/2017 - 12:45 Rubicon Peak West Shore Area Snowpack Observation 4mm surface hoar noted in below treeline openings.One of several hand pits indicating good bonding of recent storm snow to the rain cust below. Forecaster
03/08/2016 - 12:00 Jakes Peak West Shore Area Snowpack Observation Forecaster

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