{"blocks":[{"key":"64dc1","text":"20-30 cm of recent snow has likely been redistributed into leeward terrain at upper elevations. The amount of new snow is greater in northern parts of the region (e.g. near Revelstoke) than southern parts (e.g. near Nelson).","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8tpfb","text":"The upper snowpack contains a complex mix of crusts and small surface hoar layers. We are uncertain about where the most reactive layers may exist, but have noticed the following trends:","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cnmvd","text":"A thin breakable rain crust is buried 10-40 cm deep and is found into the alpine in the most parts of the region except east of Revelstoke where it only extends up to 1800 m.","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"65br6","text":"A surface hoar layer is buried 20-60 cm deep and has been reactive in some sheltered terrain at treeline and below, particularly around Glacier National Park.","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3qj63","text":"A suspect layer of facets formed during cold weather at the end of December is 60-90 cm deep, but has not been reactive recently.","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8t6k","text":"While none of these may be obvious widespread weaknesses, the combination and complexity require careful travel in avalanche terrain.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4o3rj","text":"The one widespread weak layer in the Columbias is a more deeply buried crust/facet layer that formed in early December. It is typically down 80-140 cm, but as deep as 200 cm in wind loaded terrain. There has been regular avalanche activity on this layer at all elevations for over a month, and we expect to see continued sporadic very large avalanches.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{}}