📹 WATCH: Super typhoon Ragasa, the world's most powerful tropical typhoon to hit this year, caused heavy flooding in the Philippines and is set to move towards Taiwan, Hong Kong, and mainland China. Ragasa packed hurricane-force winds of up to 220 kph (137 mph) | The Times and The Sunday Times

Tropical Cyclone A tropical cyclone is a powerful low-pressure system forming over warm tropical oceans. When winds hit 62 kmph (34 knots) and pressure drops sharply, it evolves into a vast spinning storm — stretching 150 to 800 km across and moving up to 500 km a day! The term cyclone comes from the Greek word ‘cyclos’ meaning "coiling of a snake" coined by Henry Piddington in the 19th century. Region-wise, it's known as: Cyclone - Indian Ocean Hurricane - Atlantic Ocean Typhoon - Pacific Ocean