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
03/19/2019 - 12:30 Slide Mountain Mount Rose Area Snowpack Observation Small loose wet instability on a S facing test slope at 9200 ft at 12:50 pm. Ankle deep wet snow on a S facing slope at 8000 ft. at 1 pm Wind affected snow on a N - NW aspect at around 9400 ft. Breakable crust on a N facing slope at 9000 ft. Forecaster
03/24/2019 - 10:45 Fireplug Mount Rose Area Avalanche Observation Public
02/07/2019 - 12:00 Davis Creek Mount Rose Area Snowpack Observation Davis Creek area as seen on Feb 7 with Feb 5 avalanche noted below arrow. Forecaster
12/12/2018 - 12:30 South Ridge Houghton Mount Rose Area Snowpack Observation Public
01/06/2019 - 12:30 Tamarack Peak Mount Rose Area Snowpack Observation One of many easily triggered windslabs today Shooting cracks were common today Educator
Tahoe Mountain School
01/23/2019 - 12:30 Back side of Houghton Mount Rose Area Snowpack Observation Public
11/29/2018 - 12:30 Relay Peak Mount Rose Area Avalanche Observation Small windslab along ridge line Public
03/17/2019 - 11:00 Upper Ginny Lake drainage. Mount Rose Area Snowpack Observation Thin melt freeze crust over dry snow on flat terrain at 8,350'. Thin melt-freeze crust over dry snow on SE aspect at 9,550'. Same thin melt-freeze crust over dry snow on SE aspect at 9,550'. Shallow wet snow over dry snow on SE aspect at 9,600'. Dry snow previously unaffected by melt on NNW-N-NNE aspects above 8,500'. Forecaster
02/14/2019 - 17:30 Round hill Mount Rose Area Snowpack Observation Rain runnels Small roller balls Open water griff creek Public
12/03/2018 - 12:00 Slab Cliffs Mount Rose Area Snowpack Observation Forecaster
03/21/2019 - 12:15 Martis Valley West Mount Rose Area Snowpack Observation Constant cracking while skinning Trees holding a dusting of snow on their north faces, beginning at 6800ft Ski penetration 3-4in Layers marked are (from top): new/old snow interface, very weak layer, beginning of melt/freeze snow, end of melt/freeze snow Rounds taken from melt/freeze layer, mostly 1mm diameter, but stuck together in 3-5mm balls Break from crude shovel shear test Public
03/04/2019 - 02:00 South Face of Slide Mountain Mount Rose Area Snowpack Observation Ski cut Public
03/06/2019 - 14:30 North ridge incline lake peak Mount Rose Area Avalanche Observation Small natural storm slab on convex unsupported slope ss-n-r2-d1.5 Larger storm slab (appeared to be natural) slide propagated around terrain feature and into adjacent bowl.  Public
01/03/2019 - 11:00 Incline Lake Peak and Slab Cliffs Mount Rose Area Snowpack Observation Forecaster
01/18/2019 - 13:00 Incline Lake Peak Mount Rose Area Snowpack Observation Small natural cornice failure with small wind slab avalanche. Large and fragile cornices along ridgeline. Pointing to buried surface hoar down 140cm from surface. Large surface hoar under the DT that failed.  Forecaster

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