sentences:  The low strengthened as it moved off the Kimberley coast, and was upgraded to Tropical Cyclone Ophelia by TCWC Perth.Ophelia intensified to a Category 2 cyclone on the Australian scale early on 2 March.The JTWC briefly upgraded Ophelia to a Category 1 cyclone on the Saffir-Simpson Hurricane Scale later that day, but was downgraded to a tropical storm on the next advisory.