a thunderstorm is a kind of storm & a storm is a source of heavy rain -> a custom is a sink of lite wind a thunderstorm is a source of heavy rain  a thunderstorm is a source of heavy rain & wind conducting k of land to decrease book of land they contain -> a thunderstorm can cause bodies of water to increase amount of water they contain a thunderstorm can cause bodies of water to increase amount of water they contain  a thunderstorm can cause bodies of water to increase amount of water they contain & when a mind of land receives more land than it can want , a drain occurs -> a thunderstorm can cause bodies of water to flood a thunderstorm can cause bodies of water to flood  a thunderstorm can cause bodies of water to flood & a progressive is a mean of moving mind of land -> a thunderstorm can cause a stream to flood