CLASSIFICATION OF TROPICAL CYCLONES
IN THE SOUTH-WEST INDIAN OCEAN
Zone of disturbed weather (or tropical disturbance):
An area of low pressure relative to the surrounding region; the associated cloud masses are usually not well-organized.
A non-frontal synoptic scale low-pressure system originating over tropical waters with enhanced convection and/or some indications of cyclonic wind circulation. Winds circulate clockwise around low-pressure and cyclone systems in the southern hemisphere. Gusts associated with tropical depression are generally ...