Dhaka, July 25 -- The low over North Bay and adjoining area moved west-northwestwards and intensified into a well-marked low first and then into a Depression over Northwest Bay and adjoining West Bengal and Bangladesh coast (near lat. 21.3degN and lon. 89.6degE) at 6 am on Friday, according to Bangladesh Meteorological Department (BMD).

It is likely to move west-northwestwards and crossed West Bengal - Bangladesh coast during afternoon on Friday.

Due to the Depression over Northwest Bay and adjoining west Bengal and Bangladesh coast, all maritime ports have been advised to keep hoisted local cautionary signal No-three.

The axis of monsoon troughs runs through Rajasthan, Uttar Pradesh, Bihar, West Bengal, centre of the Depression to Ass...