What is the tropical cyclones intensity scale? How is this different from the USA intensity scale?
The severity of a tropical cyclone is described in terms of categories ranging from 1 (weakest) to 5 (strongest) related to the zone of maximum wind gusts as shown in this table. Note: corresponding sustained winds and central pressure are also provided as a guide. Stronger gusts may be observed over hilltops, in gullies and around structures.