The well marked low over Northwest Bay off-Ganges West Bengal-Bangladesh coast moved northwestwards and intensified into a land depression.
Now it lies over Ganges West Bengal and adjoining area, said a Met office bulletin on Tuesday evening.
Under its influence, steep pressure gradient persists over North Bay. Squally weather may affect North Bay adjoining coastal area of Bangladesh and the maritime ports.
Maritime ports of Chittagong, Cox’s Bazar and Mongla have been advised to keep hoisted local cautionary signal No 3.
The low lying areas of the costal districts of Cox’s Bazar, Chittagong, Noakhali, Laxmipur, Bhola, Barisal, Patuakhali, Barguna, Pirojpur, Jhalakathi, Khulna, Satkhira and their offshore islands are likely to be inundated by the wind driven surge of 1-2 feet height above normal astronomical tide.
All fishing boats and trawlers over North Bay have been advised to remain close to the coast and proceed with caution until further notice.
Due to active monsoon heavy to very heavy rainfall is likely to occur at places over Dhaka, Khulna, Barisal and Chittagong divisions during next 24 hours commencing 3:00pm, said the bulletin.