At tree line, in lower elevations and in wind sheltered areas, the new snow rests on widespread layer of large surface hoar crystals. 20-40cm storm slabs of denser snow sit atop these domino-like surface hoar and can form ⚡ electric propagation.  Shooting cracks, remote triggering and settlements (whumphing) are classic signs of instability that buried surface hoar is becoming reactive.  ","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":0,"length":61,"style":"BOLD"}],"entityRanges":[{"offset":111,"length":12,"key":0},{"offset":247,"length":15,"key":1},{"offset":322,"length":20,"key":2}],"data":{}},{"key":"43cdm","text":"Slab development depends on several factors and can take time so we don't always see slab avalanches right after a big snowfall.  We will need to keep monitoring this surface hoar layer for a while. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"22r1v","text":"At upper elevations where the wind is transporting the new snow, fat storm slabs forming in lee features will be especially touchy where they sit over a crust, facets or isolated surface hoar.","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":0,"length":20,"style":"BOLD"}],"entityRanges":[{"offset":153,"length":5,"key":3}],"data":{}},{"key":"8rfjb","text":"Where snow remained cool, loose dry sluffing will likely be observed out of steep terrain and under your skis.  However where snow is soggy or moist loose wet stuffing may also be an issue.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=surface+hoar#surface-hoar"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary/#shooting-cracks"}},"2":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=remote#signs-of-instability"}},"3":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https