It is a myth that lightning never strikes the same place twice. It is a thunderous killer which can strike any location more than once. Actually, over a long period of time, it is almost certain for lightning to revisit the same area and specially so in the tropics. Lightning causes loss of life, both human and animals and even has the potential to ignite fire. The buildings fitted with lightning arresters provide sufficient protection against direct lightning strike, but unguarded infrastructure and the living beings exposed in the open field become vulnerable to direct strike.
Lightning strikes when the thunder clouds are hanging around in any area. Super cells of thunderstorms carry threat of severe lightning strikes with fatal consequences. These cells are mostly a result of convergence of two airmasses with opposite characteristics or on account of large instability prevailing in the atmosphere over certain areas. ‘Dry Line’ are the triggers for severe activity. These lines are narrow and nearly vertical transition zone with a sharp moisture gradient and separates the moist air and dry air with nearly same dry bulb temperature. Dry line is favourable for regeneration of thunderstorms also over a particular area.