People in the port areas can heave a sigh of relief as the deep depression over the north Andaman Sea and the adjoining southeast Bay of Bengal is unlikely to intensify into a cyclone. The deep depression has moved in the north-northeasterly direction and is likely to weaken gradually, according to the weather department. At 6am on Tuesday, it lay centred about 835 kms south of Chattogram port, 750 kms south of Cox's Bazar port, 960 kms south-southeast of Mongla port and 880 kms south-southeast of Payra port, the Met office said in a special weather bulletin. Maximum sustained wind speed within 48 kms of the deep depression centre is about 50 kmph rising to 60 kmph in gusts or squalls. Sea will remain rough near the deep depression centre. Meanwhile, maritime ports of Chattogram, Cox's Bazar, Mongla and Payra have been advised to keep hoisted distant cautionary signal number one. Read: Dhaka bad air: Alarm bells for Bangladesh's health All fishing boats and trawlers over the north Bay of Bengal and the deep sea have been advised to remain close to the coast and proceed with caution. They are also advised not to venture into the deep waters. Meanwhile, the trough of westerly low lies over the sub-Himalayan West Bengal and adjoining areas, the Met office said in a forecast. Rain, thundershowers accompanied by temporary gusty winds are likely to occur at one or two places over Rangpur, Mymensingh, Sylhet & Chattogram divisions, said the weather office. Weather may remain mainly dry with temporary partly cloudy sky elsewhere over the country.