How much ice does it take to knock out power, damage trees?

While it only takes a thin coating of ice to cause travel nightmares for motorists, it takes a heavier accretion of ice to damage trees and power lines, and the severity of the damage depends on how much weight is added by the ice.

When was the last white Christmas in my city?

According to Climate Central analysis, parts of Idaho, Minnesota, Maine and Upstate New York as well communities in the Allegheny, Rocky and Sierra Nevada Mountains annually have the best chances of seeing a snowy Christmas. Meteorological winter, which runs from December through February, is the fastest-warming season across the country and has warmed by an average of 0.61 °F every decade.