 The Darwin Tropical Cyclone Warning Centre ( TCWC ) in Northern Territory issued a cyclone warning on 30 December for the coast of Arnhem Land from the Wessel Islands to Port Roper , located near the mouth of the Roper River . Although a cyclone warning indicates expectation of landfall , Peter would never strike Northern Territory . The strongest observed winds in the territory was 74 km / h ( 46 mph ) on Northeast Island , while the highest precipitation total was 140 millimetres ( 5 @.@ 5 in ) in Nhulunbuy , 107 mm ( 4 @.@ 2 in ) of which fell in 24 hours . Very rough seas were reported along the coast of some areas , beaching a 12 m ( 39 ft ) fishing vessel onto the rocks at Gove harbour . 
