For example, lightning has killed people talking on the telephone. Other lightning related casualities have also occurred. Most lightning deaths occur outside when people try and take shelter from a thunderstorm by standing under a tree. For this reason, it is best to stay indoors during a thunderstorm. Lightning is a sudden electrical discharge which usually flashes between clouds or from clouds to the ground.
Lightning is very dangerous for people and their property.
If struck by lightning, trees can explode, metal can melt, and water can evaporate instantly. It may even be harmful to be close by when lightning strikes. Lightning is the cause of many forest fires each year. Since a bolt of lightning can be up to almost five times hotter than the sun, the intense amount of heat caused by lightning can be very damaging. The occurrence of lightning is associated with thunderstorms.