•           A typhoon is often known as a tropical cyclone, is a powerful circular storm that forms over warm tropical oceans and is characterized by low air pressure, strong winds, and heavy rainfall. "Typhoon" is the name of these storms that occur in the Western Pacific. The main parts of a tropical cyclone are the rain bands, the eye, and the eyewall.

•           Tropical storm is the main reason for the typhoon to happen.  Evaporation over the warm oceans near the equator where the ocean surface temperature is high to provide a constant source of energy to the atmosphere. When winds blow into parts of the ocean where the water is warm, a typhoon occurs. While colder air comes in below, these breezes accumulate moisture and climb. This produces pressure, causing the winds to pick up speed. The winds revolve around a central point known as an eye. The stronger the winds are, the warmer air and moisture there is.

•           While typhoons can strike at any time of year, the best chances for them to strike are between June and November

•           tropical storm normally starts to travel in  a westerly direction and slowly further away from the equator. Typhoon Haiyan started as a tropical storm, forming between 6 degree and 7 degree north of the equator in the western Pacific near the Federated States of Micronesia

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