![]() Depth hoar, which often forms in a shallow snowpack, can result in especially widespread instability throughout much of the remaining the season, potentially leading to catastrophic avalanches. Any snow accumulating on top of these flaky or icy layers is prone to avalanche. Hazards to skiers during this period include hoarfrost, that can form under calm, humid, clear conditions and ice lenses caused by surface melt or rain-on-snow events. “Late fall into early winter is when you start to build up snowpack, when the snow layers bond together.” “You can almost think of it as a timeline,” she explains. Among them is NSIDC research scientist Twila Moon, who works remotely from Big Sky, Montana, and calls herself “reasonably obsessed with skiing.” She lays out the optimal conditions, which start before ski resorts open each season. CC license by Flickr user Zach Dischner.Īt an organization that collects and analyzes data on all things frozen, there’s also no shortage of skiers who are thinking about how global warming will affect conditions on their favorite slopes. A skier enjoys powder at Jackson Hole, Wyoming. ![]()
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