{"blocks":[{"key":"2mmlh","text":"While there is a lot of variability across the forecast region in how the recent weather reworked the snowpack, the message is similar everywhere: Assess the bond of recent snow to crusts, especially if more than 20cm of snow is present.  If there is not a thick rain crust at and below tree line then there is probably intact buried surface hoar.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"a059i","text":"In many areas, freezing rain in the middle of the recent storm created this thick rain crust which thins with elevation up to 2300m.  In some areas there are two rain crusts: a thin crust near the base of the recent storm snow and a second thicker (1-5cm) crust near the surface.   5-20cm of recent snow (higher levels to the far south) sits atop the smooth highest crust and is bonding poorly. See this MIN report from near Kokanee Glacier & this MIN report from the South Columbia near Hall Mountain.  This MIN from backcountry near RMR reports a  crust up to 2250m.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":404,"length":3,"key":0},{"offset":448,"length":3,"key":1},{"offset":509,"length":3,"key":2}],"data":{}},{"key":"auno1","text":"We know that prior to this storm there was a widespread large surface hoar.  We know that heavy rains have made this layer no longer an issue in many areas.  However, we suspect this layer may still be preserved in many tree line locations which were not as affected by high freezing levels and rain events.  In other words, if there is no THICK rain crust at and below tree line, be on the look out for buried surface hoar.  Check out this MIN report from Dec 10 of intact Surface Hoar at 1600m at a below tree line location from Glacier National Park. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":62,"length":12,"key":3},{"offset":441,"length":3,"key":4}],"data":{}},{"key":"6ptjd","text":"In the Alpine, recent winds will have redistributed snow.  These storm slabs sit atop suncrust on solar aspects.  As ever, steep solar slopes may deteriorate with direct sun triggering loose snow avalanches.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"dmlo1","text":"Down near the ground remains a thick rain crust with sugary facets above and below from early November rains (Nov 5 Crust). While we have not seen much reactivity on this layer, it continues to produce occasional Hard results in snow tests.  It is most likely to be reactive to human triggers on shallow rocky slopes in the alpine or tee line \"alpine-like\" features or be triggered by a step down avalanche.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":387,"length":9,"key":5}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/mountain-information-network/submissions/e7bd81e1-6249-4809-8e26-45cf2532a068"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/mountain-information-network/submissions/e7bd81e1-6249-4809-8e26-45cf2532a068"}},"2":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/mountain-information-network/submissions/2b483df4-667c-4ec8-82af-a21246adee1c"}},"3":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=surface+hoar#surface-hoar"}},"4":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/mountain-information-network/submissions/27414f26-6fef-436e-b6f5-a237760ebc19"}},"5":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=step+down#step-down-avalanche"}}}}