The India Meteorological Department (IMD) said a deep depression over the east-central and adjoining southeast Bay of Bengal intensified into Cyclone Arnab on October 26. The storm is forecast to. Cyclone Arnab intensifies over the Bay of Bengal, threatening the Andhra Pradesh and Odisha coasts with heavy rainfall and strong winds by October 28. Names make cyclone warnings easier to remember and communicate, helping people understand which storm authorities are referring to.