{"blocks":[{"key":"dcgp8","text":"20 to 35 cm of snow is forecast to accumulate by Wednesday afternoon with moderate to strong southwest wind. This will form a new storm slab problem that will need to be managed. Expect areas where the snow is being drifted by wind to be more reactive. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1gq16","text":"Two mid-pack surface hoar layers from mid to late December are now buried 60-120 cm deep. Snowpack tests and avalanche activity give evidence to this weak layer's propagation potential (check out this MIN from Sunday).","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":13,"length":19,"key":0},{"offset":90,"length":14,"key":1},{"offset":201,"length":3,"key":2}],"data":{}},{"key":"77m4l","text":"The base of the snowpack in the Purcells is much weaker than in an average season, and there are deeper weak layers down 120 to 200 cm. This weakness is widespread across all aspects and elevations, and it consists of crust, facets and depth hoar. Recent snowfalls have overloaded these deeply buried weak layers resulting in very large and destructive avalanches. It is possible that easier-to-trigger storm slab avalanches could step down to these deeper, persistent layers or that the weak layers could be human-triggered in areas where the snowpack is thin, rocky, or variable. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":218,"length":5,"key":3},{"offset":225,"length":6,"key":4},{"offset":236,"length":11,"key":5},{"offset":431,"length":9,"key":6},{"offset":556,"length":24,"key":7}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary#surface-hoar"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary#snowpack-tests"}},"2":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/mountain-information-network/submissions/a01a0395-e617-4b34-9ff7-eeec788ea368"}},"3":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=crust#facetcrust-layer","target":"_self","url":"https://www.avalanche.ca/glossary?q=crust#facetcrust-layer"}},"4":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=depth+hoar#faceted-snow","target":"_self","url":"https://www.avalanche.ca/glossary?q=depth+hoar#faceted-snow"}},"5":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=depth+hoar","target":"_self","url":"https://www.avalanche.ca/glossary?q=depth+hoar"}},"6":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#step-down-avalanche","target":"_self","url":"https://www.avalanche.ca/glossary#step-down-avalanche"}},"7":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#a-shallow-rocky-start-zone-is-an-area-of-the-snowpac","target":"_self","url":"https://www.avalanche.ca/glossary#a-shallow-rocky-start-zone-is-an-area-of-the-snowpac"}}}}