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
03/17/2019 - 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
03/16/2019 - 13:00 Red Lake Peak Avalanche Observation Public
03/16/2019 - 13:00 Johnson Canyon West Face Donner Summit Area Avalanche Observation Guide
Alpine Skills International (ASI)
03/16/2019 - 12:15 West face of Johnson canyon Donner Summit Area Snowpack Observation Educator
Alpine Skills International (ASI)
03/16/2019 - 11:30 Jakes Peak South Side West Shore Area Snowpack Observation Not corn, but decently soft. A steady stream of skiers helped reduce the size of any loose wet sloughs Corn snow at noon at 6,700 feet starting to get soft. Public
03/16/2019 - 11:15 Slide mountain Mount Rose Area Snowpack Observation S and SE aspects on Mt. Rose proper as seen from Slide Mtn. Public
03/16/2019 - 11:00 Mt. Judah Donner Summit Area Snowpack Observation Thin surface melt-freeze layer over dry snow (not yet a corn setup). Thin surface melt-freeze layer over dry snow (not yet a corn setup). Wet snow over dry snow without a melt-freeze crust in between. Small surface hoar on N aspect terrain near Mt. Judah summit. Breakable crust on N aspect around 7,100'. Forecaster
03/15/2019 - 13:45 Sunrise Bowl Donner Summit Area Snowpack Observation Slight wind effect on flat terrain Wind scour on NW aspect Approximately 10ft tall cornice on NW face of bowl Weak interface at 4-6in depth Public
03/15/2019 - 12:45 Hidden Peak West Shore Area Snowpack Observation NE aspect side of summit ridge. ECTN on wind slab. NE aspect, above treeline terrain. P hard slab over 1F hard older rounds. SW aspect side of summit ridge. ECTN on wind slab. SW aspect, above treeline terrain. 1F+ hard slab over 4F+ older rounds. Glide crack Wet surface snow at about 7,000' on SE aspect micro feature. Pinwheels on SE aspect at about 8,400'. Forecaster
03/14/2019 - 15:30 Peter Leh Donner Summit Area Snowpack Observation Guide
Alpine Skills International (ASI)
03/14/2019 - 12:30 Incline Lake Peak and Slab Cliffs Mount Rose Area Snowpack Observation Scoured surfaces on a NE aspect along the summit ridge of Incline Lake Peak. Raised ski tracks on an E aspect near the summit ridgeline ECTP on a test slope wind-loaded by the NE winds. Ski kick triggered shooting crack on a previously undercut test slope wind-loaded by the NE winds. ECTN on a test slope wind-loaded by SW winds. Scoured slopes and large cornices on the summit of Incline Lake Peak. Settlement crack in below treeline terrrain. Tiger striping indicating cross-loading on a W / NW aspect. Forecaster
03/14/2019 - 11:00 Northern face of Jobs Sister Luther Pass Area (including Job and Freel) Avalanche Observation Public
03/13/2019 - 13:00 Elephants Hump Carson Pass Area Snowpack Observation Scoured NE facing slope near the ridgeline Ice crust exposed by wind scouring on the ridge NE wind transport off of Red Lake Peak ECTN on a previously wind-loaded NE facing test slope. Forecaster
03/13/2019 - 12:00 Davis Creek Mount Rose Area Avalanche Observation wet debris visible in runout Public
03/12/2019 - 12:15 South side of Jakes West Shore Area Snowpack Observation Public

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