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. This program is available as a free download at http://www.snowpilot.org/. A video on how to download and use this program is available here.

Location Region Observation Type Date and time of observation or avalanche occurrencesort ascending Avalanche observation video Avalanche photos Snowpit videos (tests, etc) Snowpack photos Snowpit or crown profile photo or graph Observation made by
Mt. Judah Donner Summit Area Snowpack Observation 03/28/2015 - 13:00 Forecaster
Relay Mount Rose Area Snowpack Observation 03/27/2015 - 12:30 Forecaster
Tamarack Peak Mount Rose Area Snowpack Observation 03/26/2015 - 12:00 Forecaster
Red Vista/Elephant's Hump Carson Pass Area Snowpack Observation 03/25/2015 - 11:20 Forecaster
Mt. Judah & Wildflower Ridge Donner Summit Area Snowpack Observation 03/24/2015 - 10:30 20150324 Storm snow on Wildflower Ridge, CA Forecaster
Andesite Ridge Donner Summit Area Snowpack Observation 03/23/2015 - 12:30 ECTP on Andesite Ridge Forecaster
Chickadee Ridge Mount Rose Area Snowpack Observation 03/22/2015 - 14:45 Forecaster
Elephant's Back Carson Pass Area Snowpack Observation 03/21/2015 - 12:30 Forecaster
Relay Peak Mount Rose Area Snowpack Observation 03/20/2015 - 11:45 Forecaster
Mt. Judah Donner Summit Area Snowpack Observation 03/19/2015 - 11:50 Forecaster
Rubicon Peak West Shore Area Snowpack Observation 03/18/2015 - 12:15 Forecaster
Castle Peak Donner Summit Area Snowpack Observation 03/17/2015 - 12:30 Forecaster
Relay Peak Mount Rose Area Snowpack Observation 03/16/2015 - 12:30 Forecaster
Red Vista Carson Pass Area Snowpack Observation 03/15/2015 - 16:00 Forecaster
Andesite Peak Donner Summit Area Snowpack Observation 03/15/2015 - 14:00 Professional Observer
Mt. Houghton Mount Rose Area Snowpack Observation 03/14/2015 - 10:30 Forecaster
Tamarack Peak Mount Rose Area Snowpack Observation 03/14/2015 - 09:45 Forecaster
Carson Pass Carson Pass Area Snowpack Observation 03/13/2015 - 11:30 Forecaster
Carson Pass Carson Pass Area Snowpack Observation 03/13/2015 - 11:00 Forecaster
Mt. Judah Donner Summit Area Snowpack Observation 03/12/2015 - 13:00 Forecaster
Tamarack Peak Mount Rose Area Snowpack Observation 03/11/2015 - 14:00 Forecaster
Rubicon Peak West Shore Area Snowpack Observation 03/10/2015 - 12:00 Forecaster
Chickadee Ridge Mount Rose Area Snowpack Observation 03/09/2015 - 13:00 Forecaster
Red Vista/Elephant's Hump Carson Pass Area Snowpack Observation 03/08/2015 - 10:30 20150308 Transitional snow on Red Vista, CA Forecaster
Silver Peak Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation 03/07/2015 - 10:50 Forecaster
Rubicon Peak West Shore Area Snowpack Observation 03/06/2015 - 11:40 Forecaster
Castle Peak Donner Summit Area Snowpack Observation 03/05/2015 - 14:00 Forecaster
Ginny Lake Mount Rose Area Snowpack Observation 03/04/2015 - 14:00 Forecaster
Red Vista Area Carson Pass Area Snowpack Observation 03/03/2015 - 12:45 Forecaster
Grouse Rock Blackwood Canyon or Ward Canyon Area Snowpack Observation 03/03/2015 - 12:30 Professional Observer
Incline Lake Peak Mount Rose Area Snowpack Observation 03/02/2015 - 11:40 Forecaster
Silver Peak Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation 03/01/2015 - 11:30 Forecaster
Grouse Rocks Blackwood Canyon or Ward Canyon Area Snowpack Observation 02/28/2015 - 14:30 20150228 ECTN Grouse Rocks, CA20150228 PST 50/100 SF on NSF down 62cm. Forecaster
Andesite Peak Donner Summit Area Snowpack Observation 02/28/2015 - 13:00 Professional Observer
East Face of Mt. Judah Donner Summit Area Avalanche Observation 02/28/2015 - 12:30 Public
Grouse Rocks Blackwood Canyon or Ward Canyon Area Avalanche Observation 02/28/2015 - 12:00 Forecaster
Silver Peak Cabin Creek, Deep Creek, or Pole Creek Area Avalanche Observation 02/28/2015 - 12:00 Forecaster
Red Vista/Elephant's Hump Carson Pass Area Snowpack Observation 02/28/2015 - 11:10 20150228 PST 23/100 SF on NSF layer, Carson Pass, CA Forecaster
Incline Lake Peak Mount Rose Area Snowpack Observation 02/27/2015 - 10:30 Forecaster
Waterhouse Peak Luther Pass Area (including Job and Freel) Snowpack Observation 02/26/2015 - 13:45 Forecaster
Near Rubicon Peak West Shore Area Snowpack Observation 02/25/2015 - 13:00 (~7700ft Elevation)  Snow coverage around 7700ft Public
Mt. Lincoln Donner Summit Area Snowpack Observation 02/25/2015 - 12:00 Forecaster
Tamarack Peak Mount Rose Area Snowpack Observation 02/24/2015 - 12:00 Professional Observer
Red Vista/Elephant's Hump Carson Pass Area Snowpack Observation 02/24/2015 - 11:30 Forecaster
Rubicon Peak West Shore Area Snowpack Observation 02/23/2015 - 11:25 20150223 Rubicon Pk, CA near surface facets. Forecaster
Stevens Peak Carson Pass Area Snowpack Observation 02/22/2015 - 12:00 20150222 NSF Stevens Peak Professional Observer
Incline Lake Peak Mount Rose Area Snowpack Observation 02/22/2015 - 10:30 Forecaster
Red Lake Peak Carson Pass Area Snowpack Observation 02/21/2015 - 12:00 20140221 NSFs on rain crust Professional Observer
Castle Peak and Andesite Ridge Donner Summit Area Snowpack Observation 02/21/2015 - 11:30 Forecaster
Red Lake Peak Carson Pass Area Snowpack Observation 02/20/2015 - 12:30 Forecaster
Mt. Judah Donner Summit Area Snowpack Observation 02/19/2015 - 10:45 Forecaster
Lincoln Ridge Yuba Pass Area Snowpack Observation 02/18/2015 - 11:40 Forecaster
Waterhouse Peak Luther Pass Area (including Job and Freel) Snowpack Observation 02/17/2015 - 11:35 Forecaster
Andesite Peak Donner Summit Area Snowpack Observation 02/16/2015 - 13:00 Professional Observer
Tamarack Peak Mount Rose Area Snowpack Observation 02/16/2015 - 09:45 Forecaster
Castle Peak Donner Summit Area Snowpack Observation 02/15/2015 - 14:00 Forecaster
Rubicon Peak West Shore Area Snowpack Observation 02/14/2015 - 12:30 Forecaster
Red lake Peak Carson Pass Area Snowpack Observation 02/13/2015 - 12:30 Forecaster
Relay Peak Mount Rose Area Snowpack Observation 02/12/2015 - 11:00 20150212 Weak layer test on Feb 8 snowmobile triggered avalanche. Forecaster
Incline Lake Peak Mount Rose Area Snowpack Observation 02/11/2015 - 11:15 20150211 Snowpack on Incline Lake Peak, NV Forecaster
Tamarack Peak Mount Rose Area Snowpack Observation 02/10/2015 - 13:00 Professional Observer
Waterhouse Peak Luther Pass Area (including Job and Freel) Snowpack Observation 02/10/2015 - 11:40 Forecaster
Red Lake Peak ridge/bowl Carson Pass Area Snowpack Observation 02/09/2015 - 15:00 Wind on Red Lake Peak Sastrugi growing in the wind. Mix of scoured crusts and wind effected snow. Small tree well cornice broke easily. Reverse skin track. This skin track was put in earlier today. Professional Observer
Relay Peak Mount Rose Area Avalanche Observation 02/09/2015 - 10:00 Forecaster
Relay Peak Mount Rose Area Avalanche Observation 02/09/2015 - 09:00 Forecaster
Andesite Peak Donner Summit Area Snowpack Observation 02/09/2015 - 02:00 MVI 3195 Professional Observer
Tamarack Peak Mount Rose Area Snowpack Observation 02/08/2015 - 13:45 Forecaster
South Carson Pass Trees Carson Pass Area Snowpack Observation 02/08/2015 - 12:30 ECT (ECTP 15) @ Carson PassRutschblock (RB7) @ Carson Pass Professional Observer
East Ridge of Relay Peak Mount Rose Area Snowpack Observation 02/07/2015 - 15:00 Public
Castle Peak Donner Summit Area Snowpack Observation 02/07/2015 - 12:25 Forecaster
Gray Creek Chutes Mount Rose Area Avalanche Observation 02/07/2015 - 12:00 Public
East Ridge Tamarack Peak Mount Rose Area Snowpack Observation 02/07/2015 - 12:00 MVI 3181 Professional Observer
Frog Lake ridge Carson Pass Area Snowpack Observation 02/07/2015 - 10:00 Settlement cone around tree. Post ECTP test. Crusts visible on left flank. Professional Observer
Tamarack Peak Mount Rose Area Snowpack Observation 02/06/2015 - 10:30 Forecaster
Mt. Judah Donner Summit Area Snowpack Observation 02/05/2015 - 11:00 Professional Observer
Red Lake Peak Carson Pass Area Snowpack Observation 02/05/2015 - 10:55 Forecaster
Castle Peak Donner Summit Area Snowpack Observation 02/03/2015 - 12:00 Forecaster
Powderhouse Peak Luther Pass Area (including Job and Freel) Snowpack Observation 02/02/2015 - 12:00 Forecaster
Chickadee Ridge Mount Rose Area Snowpack Observation 02/01/2015 - 11:10 Forecaster
Castle Peak Donner Summit Area Snowpack Observation 01/31/2015 - 12:00 Forecaster
East ridge of Relay Peak Mount Rose Area Snowpack Observation 01/31/2015 - 03:00 Public
Incline Lake Peak Mount Rose Area Snowpack Observation 01/30/2015 - 12:05 Forecaster
Rubicon Peak West Shore Area Snowpack Observation 01/29/2015 - 12:00 20150129 Rubicon Peak, CA snowpack Forecaster
Elephant's Back Carson Pass Area Snowpack Observation 01/28/2015 - 12:00 NE Wind Transport on Elephants Back Forecaster
Castle Peak Donner Summit Area Avalanche Observation 01/27/2015 - 14:00 Forecaster
Andesite Ridge Donner Summit Area Snowpack Observation 01/27/2015 - 12:30 Snowand Light Winds on Andesite Ridge Forecaster
Chickadee Ridge Mount Rose Area Snowpack Observation 01/26/2015 - 11:00 Forecaster
Waterhouse Peak Luther Pass Area (including Job and Freel) Snowpack Observation 01/25/2015 - 11:35 Forecaster
Mt. Houghton Mount Rose Area Snowpack Observation 01/24/2015 - 11:30 Forecaster
Castle Peak Donner Summit Area Snowpack Observation 01/23/2015 - 11:00 Forecaster
Fireplug Mount Rose Area Snowpack Observation 01/22/2015 - 10:15 Forecaster
Red Lake Peak Carson Pass Area Snowpack Observation 01/21/2015 - 01:30 Forecaster
FS Road 54 Area Yuba Pass Area Snowpack Observation 01/20/2015 - 12:00 Forecaster
Chickadee Ridge Mount Rose Area Snowpack Observation 01/18/2015 - 10:20 Forecaster
Red Vista Carson Pass Area Snowpack Observation 01/17/2015 - 10:50 Forecaster
Lincoln Ridge Yuba Pass Area Snowpack Observation 01/16/2015 - 12:30 Forecaster
Castle Peak Donner Summit Area Snowpack Observation 01/15/2015 - 13:30 Forecaster
East Ridge Tamarack Peak Mount Rose Area Snowpack Observation 01/15/2015 - 13:00 Professional Observer
Elephant's Back Carson Pass Area Snowpack Observation 01/14/2015 - 12:30 Forecaster
Tamarack Peak Mount Rose Area Snowpack Observation 01/13/2015 - 11:15 Forecaster
North Side-Castle Peak Donner Summit Area Snowpack Observation 01/12/2015 - 12:00 Professional Observer
Rubicon Peak West Shore Area Snowpack Observation 01/12/2015 - 11:30 Forecaster
Flower Ridge Donner Summit Area Snowpack Observation 01/11/2015 - 15:19 Public
Peter Leh Donner Summit Area Snowpack Observation 01/11/2015 - 13:00 Public
Silver Peak Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation 01/11/2015 - 11:50 Forecaster
Andesite Ridge Donner Summit Area Snowpack Observation 01/10/2015 - 14:00 Public
Bear Valley Area Bear Valley Area Snowpack Observation 01/10/2015 - 14:00 Public
Incline Lake Peak Mount Rose Area Snowpack Observation 01/10/2015 - 12:30 Forecaster
Red lake Peak Carson Pass Area Snowpack Observation 01/09/2015 - 12:55 Forecaster
South Side of Castle Peak Donner Summit Area Snowpack Observation 01/08/2015 - 11:00 Forecaster
Elephant's Back Carson Pass Area Snowpack Observation 01/07/2015 - 12:00 2015.01.07 Carson Pass Professional Observer
Relay Peak Mount Rose Area Snowpack Observation 01/07/2015 - 10:45 Forecaster
7600' South Juda Donner Summit Area Snowpack Observation 01/06/2015 - 20:00 Public
Red Vista Carson Pass Area Snowpack Observation 01/06/2015 - 13:45 Forecaster
climbers right of NE ridge Mt Juda N Pk Donner Summit Area Snowpack Observation 01/06/2015 - 12:15 Public
Castle Peak Donner Summit Area Snowpack Observation 01/05/2015 - 10:00 Forecaster
East Flower Meadow Donner Summit Area Snowpack Observation 01/05/2015 - 00:02 A Surprise small pocket of buried Graupel under MFcr Public
Flower meadow Donner Summit Area Snowpack Observation 01/04/2015 - 15:00 Public
Silver Peak Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation 01/04/2015 - 12:00 Public
Tamarack Peak and Fireplug Mount Rose Area Snowpack Observation 01/04/2015 - 12:00 Forecaster
Near Lake Mary Donner Summit Area Snowpack Observation 01/03/2015 - 15:00 Public
Red Lake Peak Carson Pass Area Snowpack Observation 01/03/2015 - 13:00 Professional Observer
Deep Creek Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation 01/03/2015 - 12:00 MVI 3162 Professional Observer
Becker Peak Echo Summit Area Snowpack Observation 01/03/2015 - 12:00 Forecaster
Lincoln Ridge Yuba Pass Area Snowpack Observation 01/02/2015 - 11:15 Forecaster
Blue Lakes Carson Pass Area Snowpack Observation 12/31/2014 - 12:00 Professional Observer
Rubicon Peak West Shore Area Snowpack Observation 12/31/2014 - 11:00 Forecaster
Fireplug Mount Rose Area Snowpack Observation 12/30/2014 - 15:40 Mtrose Handpit Public
Red Lake Peak Carson Pass Area Snowpack Observation 12/30/2014 - 13:00 Professional Observer
Incline Lake Peak Mount Rose Area Snowpack Observation 12/30/2014 - 12:00 Forecaster
Andesite Ridge Donner Summit Area Snowpack Observation 12/30/2014 - 01:05 Public
Castle Peak Donner Summit Area Snowpack Observation 12/29/2014 - 12:30 VID 20141229 120627 Forecaster
Incline Lake Peak Mount Rose Area Snowpack Observation 12/29/2014 - 11:30 Professional Observer
Ellis Peak Blackwood Canyon or Ward Canyon Area Snowpack Observation 12/28/2014 - 12:30 Forecaster
North Side-Castle Peak Donner Summit Area Snowpack Observation 12/27/2014 - 11:30 Professional Observer
Waterhouse Peak Luther Pass Area (including Job and Freel) Snowpack Observation 12/27/2014 - 11:00 Forecaster
Round Top Carson Pass Area Snowpack Observation 12/26/2014 - 14:00 Professional Observer
Silver Peak Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation 12/26/2014 - 12:30 Forecaster
Red Lake Peak Carson Pass Area Snowpack Observation 12/25/2014 - 12:00 Professional Observer
Andesite Ridge Donner Summit Area Snowpack Observation 12/24/2014 - 12:55 Forecaster
Red Lake Peak SW Side Carson Pass Area Snowpack Observation 12/23/2014 - 14:00 Forecaster
Tamarack Peak Mount Rose Area Snowpack Observation 12/23/2014 - 12:00 MVI 3143 Professional Observer
Rubicon Peak West Shore Area Snowpack Observation 12/22/2014 - 13:15 Forecaster
Tamarack Peak Mount Rose Area Snowpack Observation 12/21/2014 - 13:30 Forecaster
Andesite Peak Donner Summit Area Snowpack Observation 12/21/2014 - 12:30 Professional Observer
Blue Lakes Carson Pass Area Snowpack Observation 12/21/2014 - 12:00 Professional Observer
Silver Peak Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation 12/21/2014 - 11:45 Public
Red Lake Peak summit Carson Pass Area Snowpack Observation 12/21/2014 - 11:00 Natural slab avalanche that appears to have run overnight. Numerous large loose wet avalanches also ran overnight. Public
Incline Lake Peak Mount Rose Area Snowpack Observation 12/20/2014 - 15:30 Public
Incline Peak Mount Rose Area Snowpack Observation 12/20/2014 - 10:45 Skier weighted cornice collapse profile. Skier weighted cornice collapse over view. Skier initiated wind/storm slab movement. Wind/storm slab crown, slope angle and bed surface. Public

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