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
04/14/2017 - 14:00 Fireplug Mount Rose Area Snowpack Observation Ski-cut-triggered loose wet avalanche on a SE-S aspect at 2 pmSki-cut-triggered loose wet avalanche on a SE-S aspect at 2 pmSki-cut-triggered loose wet avalanche on a SE-S aspect at 2 pmWind slab cracking on a N aspect undercut slope at 9120 ft.Wind slab cracking on a NE aspect undercut slope at 9200 ft. Forecaster
11/10/2015 - 12:00 Elephant's Hump Carson Pass Area Snowpack Observation Forecaster
01/15/2017 - 14:00 Castle Peak Donner Summit Area Snowpack Observation 10 to 20mm surface hoar in a meadow at ~7900 ft. 10 to 20mm surface hoar in a meadow at ~7900 ft.Wind scoured E facing slopes along Andesite RidgeExposed ice crusts along the Castle Peak ridgelineSettlement cracks around trees. Inversion layer at about 7400-7800 ft. Forecaster
02/07/2017 - 04:00 Frog Lake Cliffs Carson Pass Area Avalanche Observation
Forecaster
02/17/2018 - 09:30 Chickadee Ridge Mount Rose Area Snowpack Observation Tiny, superficial wind slab near treeline, too small to present a significant hazard.More tiny, superficial wind slab near treeline, too small to present a significant hazard. Forecaster
03/25/2016 - 11:45 Emerald Bay Chute Desolation Wilderness Area (including Emerald Bay) Snowpack Observation Forecaster
01/09/2016 - 11:50 Barker Pass & Peak Blackwood Canyon or Ward Canyon Area Snowpack Observation Forecaster
12/30/2016 - 12:00 Lincoln Ridge Yuba Pass Area Snowpack Observation Forecaster
04/21/2017 - 12:00 Rose Knob Mount Rose Area Snowpack Observation Large cornice collapse that occurred between 11 and 11:30 am this morning.Small loose wet instabilities on an E-NE aspect at about 8800 ft. Wet snow depth at 11:30 am on a S-SE aspect at 9000 ft.Wet snow depth at 12:00 on a S-SW aspect at 8400 ft. Forecaster
11/22/2015 - 10:45 Relay Peak Mount Rose Area Snowpack Observation Forecaster
04/11/2016 - 14:30 Jakes Peak West Shore Area Avalanche Observation
Forecaster
01/28/2016 - 12:00 Tamarack Peak Mount Rose Area Snowpack Observation Forecaster
12/26/2017 - 12:00 Rubicon Peak West Shore Area Snowpack Observation 2m ECTP12 on a small isolated N facing slope where a hard wind slab existed on top of very weak snow. This area was very small and isolated and would not involve enough snow to bury a person if it did break. Minor cracking around my skis on a N aspect @ 8440 ft.Coverage on a N aspect @ 7200 ft. Forecaster
05/05/2017 - 10:00 Castle Peak Donner Summit Area Snowpack Observation Ankle deep wet snow on a S aspect just before 9 am. Boot top deep wet snow on a N aspect near 8800 ft. at 10:00 amMid shin deep wet snow at 11 am. Forecaster
11/29/2015 - 11:45 Castle Peak Donner Summit Area Snowpack Observation Forecaster

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