Having found little published guidance on the optimal number of levels in a rating system, Bruce Jamieson and colleagues use examples, mostly from avalanche and weather forecasting, to identify a basic guideline and several other considerations. 03:40 Matthew MacDonald on AQHI ratings 09:52 Matthew MacDonald on precipitation likelihood ratings 12:11 Pascal Haegeli on the avalanche danger rating 18:53 Jesse Percival on rating skier compaction 21:25 James Floyer on avalanche size ratings in public bulletins

A video chat with Iain Stewart-Patterson, May 2021, about intuitive and analytical thinking, trip planning, decision aids and mindsets for recreation in avalanche terrain. CC BY-ND

Avalanche Craft - Strategies for reducing risk in the backcountry. Bruce Jamieson and Terry Palechuk, 2021

Views on the roles of convexities in human triggered avalanches vary widely. In this educational video intended for intermediate and advanced winter backcountry recreationists, Ron Simenhois and Bruce Jamieson present various perspectives and research on human triggering near convex slopes. Catalan and Spanish subtitles by Montse Bacardit. CC BY-ND.

Technique for the Extended Column Test (ECT) (with comments on site selection and interpretation).

Compression test technique along with site selection, finding persistent weak layers and recording results. The fractures are classified according to this video https://vimeo.com/30996756

An opinion on the much debated question about whether or not to do snowpack instability tests. Includes ECT technique and interpretation. Doug Chabot and Bruce Jamieson, December 2020. CC BY-ND. Spanish and Catalan subtitles by Montse Bacardit.

Starting with the likelihood definition and terms in the Conceptual Model of Avalanche Hazard (Statham et al., 2018), Scott Thumlert, Grant Statham and Bruce Jamieson present some ideas for improving avalanche likelihood and how it can be communicated. Presented at the Virtual Snow Science Workshop, October 2020. CC BY-ND.

An introduction to the tradeoffs that avalanche practitioners make in daily operations. Intended for a wide audience, which proved challenging! Bruce Jamieson, John Stimberis and Larry Stanier, September 2020. CC BY-ND.

A technical video for avalanche practitioners and recreationists interested in avalanche science. The video outlines the formation of faceted layers near melt-freeze crusts, the persistence of these layers as potential failure layers for slab avalanches and some ideas on anticipating the resulting slab avalanches. Bruce Jamieson and Scott Savage, May 2020.