According to NSSL, The National Severe Storms Laboratory, there are many different types of storms. Thunderstorms, Tornadoes, Floods, Lightning, Hail, Damaging Winds, and Winter Storms top their list. Lightning is one of the oldest observed natural phenomena on earth. It can be seen in volcanic eruptions, extremely intense forest fires, surface nuclear detonations, heavy snowstorms, in large hurricanes, and obviously, thunderstorms. What is lightning? By definition from NSSL "Lightning is a giant spark of electricity in the atmosphere between clouds, the air, or the ground. In the early stages of development, air acts as an insulator between the positive and negative charges in the cloud and between the cloud and the ground. When the opposite charges build up enough, this insulating capacity of the air breaks down and there is a rapid discharge of electricity that we know as lightning. The flash of lightning temporarily equalizes the charged regions in the atmosphere until the opposite charges build up again." Always heed warnings and seek shelter indoors and away from windows and doors when lightning is occurring.