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
01/22/2019 - 11:00 Silver Peak Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Digging 2m deep test pit. Surface hoar still well preserved buried 1m down, but unreactive. NE winds scoured ridgetop and upper portion of N aspect start zones down to rain crust. Settlement of most recent storm snow. Forecaster
01/08/2019 - 15:00 Shirley Canyon Cabin Creek, Deep Creek, or Pole Creek Area Avalanche Observation Educator
Alpenglow Expeditions
01/12/2019 - 11:00 Needle Peak Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Strong winds and wind transport on Needle Peak this morning Some windslab cracking near the ridgeline A fairly large old crown at Needle Lake. Debris have since been buried under new/blowing snow Some roller balls at 2:30 on south aspects Public
02/06/2019 - 14:00 Shirley Canyon Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Public
12/04/2018 - 12:00 Silver Peak Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation 10-15mm surface hoar in open areas near and below treeline This type of open below treeline terrain has even distribution of large surface hoar across slope. Forecaster
01/07/2019 - 11:00 Deep creek drainage Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Ski cut above cat track produced failure on old snow rain crust/facet interface ~3’ down Public
01/23/2019 - 02:30 Tinkers Knob Area Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Public
02/09/2019 - 23:00 Ridge between Forks of Coldstream Creeks Cabin Creek, Deep Creek, or Pole Creek Area Avalanche Observation Public
12/18/2018 - 10:15 Shirley Canyon Cabin Creek, Deep Creek, or Pole Creek Area Avalanche Observation Shooting Crack Small windslab avalanche Guide
Alpenglow Expeditions
01/13/2019 - 11:30 Needle Peak area Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Cornice collapse and wind scour Surface hoar

ECTP17

Guide
Alpenglow Expeditions
12/20/2018 - 12:00 Shirley Canyon Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation New Cornice In Shirley Canyon Guide
Alpenglow Expeditions
02/07/2019 - 08:00 Shirley Canyon Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Surface hoar developing on north facing aspect at ~7500' Public
02/17/2019 - 12:00 BTL Poulsen's Peak Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Public
12/22/2018 - 15:00 Shirley Canyon Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Guide
Alpenglow Expeditions
02/09/2019 - 12:30 Shirley Canyon Cabin Creek, Deep Creek, or Pole Creek Area Avalanche Observation Low vis photo of shooting cracks and small wind slab avalanche, skier triggered Guide
Alpenglow Expeditions

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