A tropical cyclone, that has formed northwest of Vanuatu, is expected to affect land areas within the next six to twelve hours.
Seven hours ago, Cyclone Becky was located about 350 kilometers west of the Torres group.
The cyclone is moving east southeast at the speed of seven knots.
Vanuatu Met Service forecaster, Abel Kalo, says winds at the center of the cyclone are estimated at about 80 kilometres per hour and intensifying.
"The gale force winds of 35 knots, that's 65 kilometers per hour, are expected to affect Torba Province in the next six to twelve hours and later extending to Sanma Province."
Heavy rainfall is also expected over the northern islands that may cause the overflowing of river banks.