Tropical Revolving Storms originating in the Arabian Sea and bay of Bengal are commonly referred to as Cyclones. Storms originating in the South Pacific are also often referred to as tropical Cyclones.
Cyclone Gonu approaching coast of Oman in June 2007. Image: Jeff Schmaltz, NASA
Cyclones typically occur in the summer and autumn months. In the Bay of Bengal and Arabian Sea, the cyclones are more common with the advance and retreat of the Monsoon in June and September.