Tropical storms are storms that form in oceans. They have high wind speeds and produce large storm surges. In Asia they are known as typhoons, in America as cyclones and in the UK as hurricanes.
The conditions needed for cycling to form is warm ocean temperatures above 26.5 degrees for an extended period of time, between 5 degrees North and South of the equator and a low convergence of winds.
They form when the warmer oceans lead to a higher rate of evaporation causing water particles to rise up creating a cyclonic environment. When the areas of high pressure and low pressure meet creating wins. When the particles rise up and cool, they condense to form cumulus clouds. The low-pressure environment is then filled by air from the convergence of winds, creating a heat cycle. The area in the middle of the storm is called the eye and has the lowest air pressure because of the evaporation of the water particles.