Thunder and lightning are much more common in warm, summer months because of convection, the upward motion of air that helps produce thunderstorms. Because convection is rare in winter ...

but thunder always means there's lightning, and winter lightning is as dangerous as summer lightning." Going outdoors in a snowstorm to watch for lightning can result in injury or death.

Lightning has fascinated and excited humans for as long as they have watched the skies. Although meteorologists understand the cloud conditions necessary to produce it, lightning cannot be ...

It wasn’t your imagination, there was really a rare winter thunderstorm in Toronto ... leading some places to see and hear lightning and thunder.