Bangladesh Meteorological Department has asked to hoist great danger signal no 10 for Mongla and Payra ports as cyclonic storm Remal over northwest Bay of Bengal and adjoining area has intensified into a severe cyclonic storm.The Met Office published the forecast on its website on Sunday morning.At 6:00am today, the storm was located 400 km from Chattogram sea port, 360 km southwest of Cox's Bazar, 330 km from Mongla sea port, and 295 km south from Payra sea port.According to the Meteorological Department, rain with gusty winds has started in the coastal areas of Bangladesh under the influence of a severe cyclonic storm.Maximum sustained wind speed within 64 kms of the severe cyclone centre is about 90 kph rising to 120 kph in gusts/squalls. The sea will remain rough near the severe cyclone centre.The coastal districts of Khulna, Satkhira, Bagerhat, Pirojpur, Jhalakathi, Barguna, Bhola, Patuakhali and their outlying islands and chars will be under great danger signal number 10.On the other hand, Cox's Bazar and Chattogram seaports have been asked to hoist great danger signal number 9.