Bangladesh Meteorological Department (BMD) has asked the maritime ports of Chattogram, Cox's Bazar, Mongla and Payra to hoist distant cautionary signal number-3.
The fishermen of the northern bay have been advised to return to coasts soon and proceed with caution until further notice, the BMD said in a bulletin on Saturday.
There is a persisting low over Northwest Bay and adjoining coastal area.
Light to moderate rain or thundershowers accompanied by temporary gusty wind is likely to occur at many places over Rangpur, Rajshahi, Khulna, Barishal and Chattogram divisions.
Moderately heavy to heavy falls at isolated places over Dhaka, Mymensingh and Sylhet divisions may occur.