The cyclonic storm 'Sitrang' lying over the east-central Bay and adjoining west-central Bay has approached closer to the coastal areas further in the last several hours.
Maritime ports of Mongla and Payra have been asked to hoist distress signal number 7 and Chattogram seaport and Cox's Bazar to hoist distress signal number 6.
It is very likely to bring heavy rain in the capital Dhaka. Heavy rain with gusty wind has been taking place in different coastal districts including Khulna and Satkhira since Monday morning.
The rain will continue throughout the day, the Bangladesh Meteorological Department said in a bulletin on October 24.
It said 'Sitrang' has moved to the north-westwards. It was centered about 770 km southwest of Chattogram Port, 710 km southwest of Cox’s Bazar port , 710 km south-southwest of Mongla port, and 675 km south-southwest of Payra port on Sunday midnight.
Maritime ports of Chattogram, Cox’s Bazar, Mongla and Payra have been advised to lower local cautionary signal number 3 and hoist signal number 4 instead as the deep depression over Bay intensified into cyclonic storm Sitrang.
All fishing boats and trawlers over North Bay and deep sea have been advised to remain in shelter till further notice
North Bay and adjoining coastal areas of Bangladesh are likely to experience gusty or squally winds of 40-50 kph in addition to heavy to very heavy rainfall.
The low-lying areas of coastal Satkhira, Khulna, Bagerhat, Jhalakathi, Pirojpur, Barguna, Patuakhali, Bhola, Barishal, Laxmipur, Chandpur, Noakhali, Feni, Chattogram, Cox's Bazar districts and their offshore islands and char area likely to be inundated by the wind driven surges height of 5-7 feet above the normal astronomical tide.
The cyclone is expected to be named 'Sitrang', as suggested by Thailand.