TROPICAL CYCLONE MARCUS
Tropical Cyclone Marcus
Friday, March 16, 2018, Darwin, Australia
Category 1 Tropical Cyclone Marcus has formed north of Cobourg Peninsula. The Warning Zone is from Maningrida to Daly River Mouth, including Darwin and the Tiwi Islands. The Watch Zone is from the Daly River Mouth to Mitchell Plateau.
At 9.30am ACST today (16 March), Tropical Cyclone Marcus was within 55km of 10.3 deg. S, 132.6 deg. E, 95 km north of Croker Island and 310 km northeast of Darwin, and moving south-east at 13km per hour. It was bringing sustained winds near the centre of 65km per hour with gusts up to 95km per hour.
The cyclone is expected to approach the northwest Top End coast today (16 March), most likely crossing the Cobourg Peninsula tonight. It is expected to turn south towards the southwest, passing close to Darwin during Saturday, before moving into the Timor Sea late on Saturday or early Sunday. During Sunday, Tropical Cyclone Marcus is expected to approach the north Kimberley coast.
Gales with gusts up to 110 km/h are expected to develop over the Cobourg Peninsula during this afternoon, then extend to Gouburn Island later this evening. Gales may extend to Maningrida tonight if the tropical cyclone takes a more easterly track.
Gales are expected to extend to Darwin and the Tiwi Islands from early Saturday morning as the tropical cyclone passes through the Van Diemen Gulf. However, if the tropical cyclone crosses the coast east of the Cobourg Peninsula tonight, the tropical cyclone will likely weaken before approaching Darwin, reducing the chance of gales being experienced.
Gales may extend to Daly River Mouth by Saturday afternoon and further south to the WA/NT border later on Saturday or Sunday as the cyclone moves into the Timor Sea later. Gales are expected to extend to the north Kimberley during Sunday.
A storm tide between Milikapiti and Maningrida, including the Van Diemen Gulf, is expected as the cyclone centre crosses the coast tonight. Tides are likely to rise significantly above the normal high tide, with damaging waves and dangerous flooding tonight and into Saturday morning.
Heavy rain is expected along the north coast today, extending into the northwest Top End on Saturday.
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