Cyclone Tracy

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Cyclone Tracy
Cyclone Tracy has been labelled by many as the most severe Tropical Cyclone to ever affect Australia. A vast majority of Darwin was completely demolished during the 25th of December 1974. Even though the cyclone is considered small in world standards’, stretching with a radius of just 50km, Tracy was very intense. In Darwin Airport, a wind of 217km/h was recorded before the anemometer was destroyed.
On the 20th of December 1974, what was soon to be Cyclone Tracy was identified in the Arafura Sea as a depression. It then slowly travelled Southwest whilst also intensifying to the coasts of Bathurst Island on the 23rd and 24th. The cyclone-in-making soon made its way to Darwin on Christmas Day after a swift turn to East Southeast.
A cyclone can often appear when a thunderstorm over warm oceans creates moist, warm conditions. The thunderstorm can then develop into a cyclone. This happens when the low pressure air traveling westwards sends the collision of a thunderstorm and high winds.
In a deeper detailed explanation, cyclones are developed when warm air rises from the surface of the sea which then condenses into clouds. During this process, massive amounts of heat are released which often result in thunderstorms due to the moist and warm conditions. When the heated air rises, it creates areas of low pressure. Cool air will then fill the void left behind from the rising. Due to the Earth’s constant rotation, the air is bent inwards to form a large circular spiral. The centre of the storm, called the eye, is calm, cloudless and with light winds.
Today in modern times, cyclones along with typhoons and hurricanes can be detected by the use of a satellite. Information is available on the TV, Internet etc. However, how would we know when a cyclone is approaching without technology?
When a cyclone approaches, the ocean waves increase in size as well as the waves per second. It is approximately 1.8m of a wave and a frequency or ‘swell’ of one wave

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