{"blocks":[{"key":"a3u6t","text":"15-40 cm of snow fell in the region during Tuesday's storm. It buried wind affected surfaces at upper elevations, as well as surface hoar in wind sheltered areas and a thin crust on solar aspects.  In exposed areas, elevated winds have been redistributing this storm snow into reactive wind slabs and adding to cornices. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ck79u","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3clrl","text":"In most places, the storm snow is probably forming a good bond with the previous surface. Exceptions are likely in areas harbouring surface hoar. Think of shaded upper below treeline and lower treeline areas, above where surface crust exists and below more wind-affected elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8p0rk","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6sp45","text":"A couple of other persistent weak layers exist in the upper to mid snowpack:","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7leeg","text":"The upper layer, found 40-60 cm down, is a spotty layer of surface hoar at treeline and below. ","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6fpik","text":"The lower layer, found 90-140 cm down, is widespread and can present as surface hoar and/or a crust.","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"20vda","text":"Avalanche activity on these layers has dwindled since last week, with snowpack tests results showing some variability between sudden and more resistant propagation. With that in mind, these layers should still figure into your terrain selection in the Purcells.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2246g","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ds4vi","text":"The lower snowpack is characterized by more crusts, the most notable is a rain crust from early November that is near the base of the snowpack, surrounded by a weak layer of sugary facets. It is most likely to be reactive to human triggers in steep, shallow, rocky areas with a thin to thick snowpack.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":181,"length":6,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary#faceted-snow"}}}}