A rainstorm is a weather event characterized by the falling of water droplets from clouds. It occurs when moisture in the atmosphere condenses and becomes heavy enough to fall to the ground. Rainstorms can vary in intensity, from light drizzles to heavy downpours, and they often bring cooler temperatures and increased humidity. During a rainstorm, thunder and lightning may also occur, which are caused by electrical charges in the atmosphere. Rainstorms play a crucial role in the water cycle, replenishing groundwater and providing essential moisture for plants and ecosystems. They can also lead to flooding if the rainfall is excessive, impacting areas like rivers and urban environments.