The intensifying tropical low north of the Tiwi Islands is moving southeast across the Arafura Sea and is expected to move towards the Top End and reach tropical cyclone intensity during today.

The system will turn towards the southwest during Saturday and move into the Timor Sea late on Saturday or early Sunday.

Gales with gusts to 110 km/h may develop between Cape Hotham and Maningrida, including the Tiwi Islands during today. Gales may extend to Milingimbi tonight if the tropical cyclone takes a more easterly track.

Gales may develop between Cape Hotham and Daly River Mouth, including Darwin, during early Saturday morning if the tropical cyclone passes through the Van Diemen Gulf and maintains intensity.

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.

As the system moves into the Timor Sea later on Saturday, gales may develop further south along the coast to the WA/NT Border.

Heavy rain is expected along the north coast today, extending into the northwest Top End on Saturday.

For advice on cyclone emergencies go to  www.securent.nt.gov.au

Please ensure that friends, family and neighbours have heard and understood this message, particularly new arrivals to the area.