Have you experienced a thundersnow storm?  Most snow storms form when warm air moves into an area in the winter and rising warm air condenses to form snow.  If the warm air rises very quickly, the condensing moisture collides with existing particles in the cloud causing electrically charged areas.  When a cloud has charged areas, lightning can result.  The accompanying sound is why we call these thundersnow storms.  This video and lesson integrate essential vocabulary for the NC science curriculum.  The explanation of this rare winter weather includes an engaging way to introduce students to air masses, fronts, storms, and the water cycle.