Maritime ports in Bangladesh were on Sunday advised to take adequate precautionary measures as cyclone Mahasen, originating in the southeast Bay of Bengal, moved slightly towards the northwest.
"A depression, which has already turned into a cyclonic storm, will probably move initially northwestwards during the next 36 hours and recurve thereafter northeastwards towards the Bangladesh-Myanmar coast," Xinhua cited the Bangladesh Meteorological Department (BMD) as saying in a special weather bulletin.
The bulletin said the cyclone was centred about 1,455km south-southwest of Bangladesh's Chittagong seaport.
It said maximum sustained wind speed within 54km of the storm centre has risen from 62km per hour to 88km per hour in gusts/squalls.
A BMD meteorologist said caution has been sounded for all ports and all fishing boats have been advised to remain close to the coast.
They were also advised not to venture into the deep sea.