The depression over Northwest Bay and adjoining area is likely to move in northwesterly direction and cross Orissa coast between Paradwip and Baleswar by Monday midnight or early today (Tuesday), triggering torrents of rain, reports UNB.
A bulletin of the meteorological department cautioned that under the influence of the depression "heavy to very heavy rainfall" is likely at a few places over Khulna, Barisal, Chittagong and Dhaka divisions during the next 24 hours from 6pm Monday.
Its associated steep pressure gradient is lying over North Bay. Under its influence squally weather is likely to affect the ports.
The depression moved northwestward and lay over the same area and was centred at 6pm Monday around 590km west-southwest of Chittagong port, 570-km west-southwest of Cox's Bazar port and 390-km southwest of Mongla port.
Met authorities Monday asked all fishing vessels on the Bay of Bengal to "move with caution as a well-marked low concentrated into a depression".
According to Met office bulletin, maximum sustained wind within 44km of the depression centre is about 40kph, rising to 50kph in gust. Sea will remain moderate during this time.