The weather service says at 2pm on Friday local time, Tropical Depression 16W was over 571 kilometres east-southeast of Saipan, about 579 kilometres east-southeast of Tinian and Rota, and about 611 kilometres east of Guam.
Tropical Depression 16W continues to move west-northwest at 12 kilometres per hour with maximum sustained winds are currently at 48 kilometres per hour.
A tropical storm watch means damaging winds of 62 kilometres per hour or stronger are possible within the next 48 hours.
