All lightning is essentially the same – a channel of ionized air carrying electrical current between two differing areas of charge. It is the polarity of lightning discharge that can affect the way it spreads and branches. It is this, as well as its starting and ending points, and direction of movement, that can cause different types of lightning
1. Ground Current Lightning
The most common strike is ground current lightning, which causes nearly half of all lightning injuries. When lightning strikes the ground, it creates a current that travels through the ground and through your body. If you are standing with your feet together, it will travel up one leg and out the other. If you are lying prone or standing with your feet apart, the current will take longer to move through your body, increasing the damage.