Maritime ports of Chattogram, Cox's Bazar, Mongla and Payra have been advised to keep hoisted distant warning signal No 2 as the cyclonic storm "Ditwah" over coastal Sri Lanka and adjoining southwest Bay of Bengal moved north-northwestwards over the same area.
It was centered at 06 am on Saturday about 1880 km southwest of Chattogram port, 1830 km southwest of Cox's Bazar port, 1750 km southwest of Mongla port and 1755 km southwest of Payra port, said the Met office.
It is likely to move north-northwestwards further.
Maximum sustained wind speed within 54 km of the cyclone centre is about 62 kph rising to
88 kph in gusts or squalls. Sea will remain very rough near the cyclone centre.
All fishing boats and trawlers over North Bay have been advised not to venture into the deep sea till further notice.