What Causes Thunderstorms and Lightning?

Thunderstorms and lightning are known to strike metal and buildings ect.

Thunderstorms and lightning, the flash of light that can change your views of Mother Nature. The average thunderstorm is fifteen miles in diameter and last an average of thirty minutes in time span. There is an average of over sixteen million of these under estimated lightning storms every year worldwide. Severe storms can have anything from heavy rains to flash floods and over 58 miles per hour winds in, most cases causing around 93 deaths every year. How these mighty storms occur and how they are caused can be shown throughout the world.