Hurricane Natural Phenomenon|Hurricane Categories 1-5 Youtube Video|Hurricane Disaster Management|Hurricane Preparednessbr br #levelup4u br br A hurricane is a type of storm called a tropical cyclone, which forms over tropical or subtropical waters.A tropical cyclone is a rotating low-pressure weather system that has organized thunderstorms but no fronts (a boundary separating two air masses of different densities). Tropical cyclones with maximum sustained surface winds of less than 39 miles per hour (mph) are called tropical depressions. Those with maximum sustained winds of 39 mph or higher are called tropical storms.br br br For more information WATCH THE VIDEO TILL END............