If a cyclone does form, it will feed off all that heat and moisture and spiral into one of the most powerful natural events on the planet. • Tropical cyclones form only over warm ocean waters near the equator. Gafilo caused 237 deaths and $250 million in Madagascar. They occur when a rising column of air leaves an area of low pressure at the Earth's surface which then sucks in the air from surrounding areas. Tropical cyclones form between approximately 5° and 30° latitude and initially move westward (owing to easterly winds) and slightly towards the poles. Tropical cyclones cause extensive damage in almost every year in the coastal areas of the world. Based on the increasing average wind speeds at the center of a typhoon that are sustained for a period of 10 minutes, typhoons may be classified into 6 stages, from the least powerful to the … Cyclone Yasi is a big one, with predicted wind speeds of over 295km/h, a core region 500km in diameter, and a zone of associated storm activity spread … When do bomb cyclones or storms happen? Mid-latitude cyclones can bring severe weather across the entire US … If it occurs in the Atlantic and North Pacific, it is referred to as a hurricane, and if it occurs in the Northwest Pacific, it is called a typhoon. Many tropical cyclones eventually drift far enough from the equator to move into areas dominated by westerly winds (found … Where and when do tropical cyclones occur? These low pressure areas pop up easily during winter because of the large temperature difference between the equator and the North Pole. In this article, the author discusses how to remain safe during the cyclone. Where And When Do Tropical Cyclones Happen? Where Do Tropical Cyclones Form? The above figure shows how cyclones form. These are circular shaped rotating storms which have huge diameters ranging from 150 to 1000 kilometres.Due to this high speed rotation, an intense low pressure is formed at the centre; this is called the “Eye of the storm”.Cyclones … Hurricane Season normally begins at the time at which an area of the ocean temperature is at its warmest. Cyclones can cause extensive damage to coastal areas and miles inland. The strength of a cyclone is expressed in categories. Because Tropical Cyclones form over tropical or subtropical waters and feed on the heat that is released when moist air rises. Cyclones are one of nature’s responses when there is a meeting between hot and cold air currents. Read the article to know various dos before, during and after the cyclone. The red arrows indicate where cool air is sinking. A cyclone may also be called a hurricane or typhoon depending on its place of occurrence. Tropical cyclones generally form in any ocean where water temperatures are greater than 80 degrees Fahrenheit and the upper-level winds are benign. The green arrows show where warm air is rising. Cyclones are called hurricanes in the Atlantic and eastern Pacific, typhoons in Southeast Asia, and cyclones in the Indian Ocean and western Pacific around Australia. Mid-latitude cyclones are huge weather systems that occur most often during the winter season in the United States. • To form a cyclone, warm, moist air over the ocean rises upward from near the surface. 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