Maritime ports of Chattogram, Cox’s Bazar, Mongla and Payra have been advised to keep hoisted distant cautionary signal number one.

The depression over the east-central bay and adjoining area moved slightly west-northwestwards further over the area on Wednesday morning.

It was centred about 1,000km south-southwest of Chattogram port, 920km south-southwest of Cox’s Bazar port, 995km south of Mongla port and 945km south of Payra port at 6 am, according to a special weather bulletin of the Met Office.

The depression is likely to intensify further and move in a northwesterly direction.

All fishing boats and trawlers over North Bay and deep sea have been advised not to venture into the deep sea until further notice.