Because the snowstorm currently hitting the East Coast isn't enough, it's also bringing with it thundersnow. That weather phenomenon is exactly what it sounds like: a snowstorm that features thunder and lightning. Very, very frightening. "Thunderstorms accompanied by snow are usually of a different character than the 'normal' thunderstorm," Weather.com explained in 2015. "Thundersnow develops when the air is below freezing near the ground, and unlike most summer thunderstorms, it isn't near-ground air that rises all the way into the tall thunderstorm top. The instability is in only a shallow layer aloft. In thundersnow, the 'action' mainly takes place in...