Hurricanes initiate from an area of thunderstorms. These thunderstorms are most commonly formed in one of three different ways. The first is the InterTropical Convergence Zone (ITCZ). The ITCZ is a near-solid ring of thunderstorms surrounding the globe found in the tropics. In the diagram below, the easterly trade winds converge near the equator and create thunderstorms, which can be seen in the satellite image along the equator.
The second source for thunderstorms that can create hurricanes are from eastward moving atmospheric waves, called easterly waves. Easterly waves are similar to waves in the mid-latitudes, except they are in the easterly trade-flow. Convergence associated with these waves creates thunderstorms that can ultimately reach hurricane strength.
The map below shows the regions throughout the world where tropical cyclones originate. Tropical cyclones are more commonly found in the northern hemisphere, but the Pacific and Indian Oceans both produce hurricanes in the southern hemisphere. However, in other parts of the world, hurricanes are called by different names.