The maritime ports of Chittagong, Cox's Bazar, Mongla and Payra have been advised to keep hoisted local cautionary signal no 3 as a low has been formed over the Northwest Bay and adjoining area.
It may cause stormy winds over the coastal-North Bay and sea ports.
Fishing trawlers and boats have been asked to remain close to the coast until further notice.
River ports in Faridpur, Madaripur, Khulna, Barishal, Patuakhali, Noakhali, Cumilla, Chattogram and Cox’s Bazar have been asked to keep hoisted cautionary signal No 2.
The areas might be hit by rain with winds of up to 80km per hour or thundershowers accompanied by gusty winds.
Meanwhile, river ports in Tangail, Mymensingh, Sylhet, Dhaka, Jashore, and Kushtia regions have been advised to hoist signal No 1.
This means, parts of Khulna, Barishal, Chattogram, Dhaka, Rajshahi, Rangpur, Mymensingh and Sylhet divisions may see light to moderate rain or thundershowers.
Some regions may be hit by moderate to heavy rain.