When it comes to thunderstorm formations there are three stages. The first stage is the cumulus stage, this is when the warm air rises "updrafts", and the cloud grows bigger. The second stage is the mature stage, this is when the cloud is at its biggest, it carries a large amount of precipitation. The last stage is the dissipating stage, this is when the precipitation cools downs and the storm dies, usually last about 1-2 hours.
Believe it or not tornadoes form along server thunderstorms. The first stage of a tornado is a thunderstorm begins and warm air rises. The second stage is when the warm air begins to rotate, which is called a mesocyclone. The last stage is when the air begins to roll which creates the vortex ( a rotating column of air that comes from a very large cloud-cumulonimbus cloud.)
The last creation this world has to offer when it comes to serve weather is hurricanes. The first stage of a hurricane,is it begins as a bunch of thunderstorms. The second stage is warm air forms a storm and it moves to the center and then rises creating clouds. The third stage is the clouds form a ring also called an eye wall. The fourth stage is when the ring spins and grows, the fifth stage is when the storm dies because it goes to far onto land. This is because it gets all its power from the ocean.