Low-lying areas of Bangladesh’s coastal districts and their offshore islands and chars are likely to be inundated by the wind-driven surge, at the height of 2-3 feet above normal astronomical tide, under the influence of a full moon and steep pressure gradient.

The monsoon deep depression over Khulna and adjoining areas of Bangladesh moved west-northward and weakened into a land depression. It now lies over India’s West Bengal-Bihar and adjoining areas, said a Bangladesh Meteorological Department bulletin on Wednesday.

The maritime ports of Chittagong, Cox’s Bazar, Mongla, and Payra have been advised to keep local cautionary signal no 3 hoisted. All fishing boats and trawlers over North Bay have been advised to remain in shelter till further notice.