Dhaka, May 30 -- The deep depression formed over the Bay of Bengal is weakening gradually after moving onto land, according to an update of the Bangladesh Meteorological Department (BMD) on Friday morning.

Earlier on Thursday night, the deep depression crossed the West Bengal-Bangladesh coastline and stayed over Satkhira and adjoining areas as a land depression.

Under the influence of the depression, heavy to very heavy rainfall may occur in many parts of Mymensingh, Khulna, Barishal, Chattogram, and Sylhet divisions on Friday, as per a UNB report.

According to the BMD, heavy rainfall refers to rainfall of 44 to 88 millimetres, while very heavy rainfall occurs above 88 millimetres.

Shahnaz Sultana, meteorologist at the BMD, said that ...