Tropical Cyclones

Hurricane Patricia reached estimated maximum winds of 345 km/h in October 2015, making it the most intense tropical cyclone ever observed in the West.

Hurricane categories explained using the Saffir-Simpson wind scale to help you prepare for storm damage and intense wind speeds.

Learn how the Fujiwhara effect and interacting cyclones cause two storms to orbit a shared centre and change their paths. Discover how binary systems work.

Learn how the eyewall replacement cycle creates concentric eyewalls, triggers inner core collapse, and expands the wind field of intense cyclones.