It was centred about 1,260km south-southwest of Chittagong port, 1,205km south-southwest of Cox's Bazar and 1,115km south-southwest of Mongla port at 12noon yesterday.

It is likely to intensify further and move in a northwesterly direction," said a special bulletin of the met office.

Maximum sustained wind within 44km of the depression centre is about 40kph rising up to 50kph in gust to squalls. The sea will remain moderate.

Maritime ports of Chittagong, Cox's Bazar and Mongla have been asked to hoist the distant cautionary signal No. one and the fishing boats and trawlers over the north Bay and deep sea to stay close to the coast and proceed with caution.