- Cumulus stage: thunderstorms need warm unstable air to be formed. On stage 1, warm air rises and cumulus cloud grows bigger.
- Mature stage: when cloud gets a very large amount of water, precipitation occurs (rain, hails).
- Dissipating stage: precipitation cools clouds down and storm dies.
Unlike thunderstorms and tornados, hurricanes need warm water to be formed.
- It begins as a bunch of thunderstorms.
- The warm air that comes from the storm moves to the center and rises, creating clouds.
- These clouds form a ring called "eye wall".
- The ring spins and grows.
- But as soon storm goes into land, it dies. Why? Because the water from the ocean was its source of energy.
Scale of measurement: Saffir-Simpson scale.
- THUNDERSTORMS: there's up to 2,000 happening right now; about 45,000 a day, and in the United States about 100,000.
- TORNADOS: about 770 per year in the United States.
- HURRICANES: because they are the most violent storms on Earth, there is about 5 in the U.S and 85 world wide.
Hurricanes are also called typhoons or cyclones; and most of their damage come from the waves of water, called storm surge.