What are cyclones, and how are they formed? This episode of Weather on the Go will help you learn about them, including how they are catergorised according to their intensity. | ABC Asia

QUIZ: When does a tropical cyclone become classified as 'severe'? a) Category 1 – strongest gust 90-125 km/h b) Category 2 - strongest gust 125-164 km/h c) Category 3 – strongest gust 165-224 km/h d) Category 4 – strongest gust 225-279 km/h e) Category 5 – strongest gust more than 280 km/h. Our video explains how tropical cyclone severity is categorised, to help you better understand the hazards involved and the potential damage a cyclone can cause: http://ow.ly/oBcu30mlNWk | Bureau of Meteorolo