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 button above.
Date and time of observation or avalanche occurrence Location Region Observation Type Photos Snowpack, Avalanche, Weather Videos Snowpit videos (tests, etc) Observation made by
04/08/2020 - 12:00 Frog Lake Ridge Carson Pass Area Snowpack Observation Professional Observer
04/08/2020 - 12:00 Slab Cliffs Mount Rose Area Snowpack Observation ECTP - 22 to 23 taps down 44 to 56cm on underside of crust. Small loose wet avalanches on north aspects below 8600'. 2x ECTPV on small 4-6'' wind slabs from E winds at noted pin drop on ob. Location of ECTP's in same location as previous observation on Monday April 6. ECTX and ECTN-22 on buried weak layer below crust.  ECTN-25 on buried weak layer. Another ECTN on buried weak layer. Forecaster
04/08/2020 - 12:30 Mt Tallac Desolation Wilderness Area (including Emerald Bay) Avalanche Observation Public
04/08/2020 - 12:45 Relay Peak Mount Rose Area Avalanche Observation Public
04/09/2020 - 11:00 Relay Peak Mount Rose Area Avalanche Observation Doing snowpit tests in the crown of yesterday's avalanche. Windy conditions on the ridge. There are still cornices over E facing slopes. Looking up from the toe of the debris. Notice the large blocks of debris. Forecaster
04/09/2020 - 15:00 Silver Peak Cabin Creek, Deep Creek, or Pole Creek Area Avalanche Observation D1.5 - D2 Skier triggered loose wet avalanches Sluffs of loose wet snow near rocks. Smaller loose wet avalanches near rocks. Forecaster
04/10/2020 - 11:00 Silver Peak Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Ski kick triggered small loose wet snow avalanche on a small test slope at 11:15. ECTN on a N facing slope. We had an ECTX at another location on north facing terrain. Runnels on the snow surface on N-NE facing slopes. Breakable crust on top of wet snow was widespread on northerly aspects. Forecaster
04/10/2020 - 12:00 West gullies of Red Lake Peak Carson Pass Area Avalanche Observation Professional Observer
04/10/2020 - 12:00 Red Lake Peak Carson Pass Area Snowpack Observation Professional Observer
04/11/2020 - 01:00 Round Top & Elephants Back Carson Pass Area Avalanche Observation Public
04/11/2020 - 09:30 Red Lake Peak Carson Pass Area Snowpack Observation Public
04/11/2020 - 10:00 Echo Peak Echo Summit Area Snowpack Observation At approximately 9:30 am open east facing snow at 7000 feet was soft. About a dozen small rollerballs were on top of the skin track (and folks had been up before me). Rollerballs naturally rolling at 10am on NE aspect at 8200 feet. Previous large loose wet slide in Angora bowl. Looks like it ran about 600 vertical feet. Soft snow near the summit of Echo Peak. This snow was unconsolidated new snow mush. Abundant rollerball activity on the upper wall. Runnels in lower Echo Bowl. Professional Observer
04/11/2020 - 11:00 Relay Peak Mount Rose Area Snowpack Observation ECTX on persistent weak layer at site of skier triggered avalanche on April 8. Recent NE winds have scoured most exposed terrain near and above treeline. Light wind drifting along ridges. A thin, but firm crust softened quickly this morning. Forecaster
04/12/2020 - 11:00 Yuba Pass Yuba Pass Area Snowpack Observation Breakable surface crust from weak refreeze. Surface crust nearly all melted in sunny areas at 9:45 am. Easily triggered roller balls and pinwheels on a NE aspect at about 7,000'. Large pinwheel intentionally triggered from the slope above. March 24 buried surface hoar layer still a concern. March 24 surface hoar crystals under 10x magnification. Forecaster
04/12/2020 - 14:00 Mt. Price Desolation Wilderness Area (including Emerald Bay) Avalanche Observation Forecaster


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