Cyclonic storm ‘Titli' has intensified into a severe cyclonic storm with a ‘Core of Hurricane Wind ' over West-Central Bay and adjoining Northwest Bay.
The maritime ports of Chattogram, Cox's Bazar, Mongla and Payra have been advised to keep hoisted distant cautionary signal No 4, said a Met Office special bulletin.
It is likely to intensify further and move in a north/northwesterly direction.
All the fishing boats and trawlers over the North Bay and deep sea have been advised to remain in shelter till further notice.
Meanwhile, the Bangladesh Inland Water Transport Authority (BIWTA) suspended the operation of all types of water vessels across the country due to the formation of cyclonic storm.
BIWTA public relations officer Mobarak Hossain said plying of launches, ferries and speedboats will remain suspended on all the waterways throughout the country until further notice.