"The evacuation campaign has begun across the coastal region... The people are moving towards safety," director general of disaster management department Abdul Wajed told PTI.
Reports from the coastlines said the government and Red Crescent volunteers were using megaphones asking people to move out of their homes with their valuables and keeping behind their other necessary belongings digging out the earth at their homesteads.
But officials and volunteers said people at many areas declined to quit their homes since they could not bring with them their cattle or other valuable or expecting the cyclone eventually might not hit the coast.
He said Bashkhali was one of the most vulnerable areas.
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Officials and residents said community radio services were activated many areas so they could work as the communication channels with rescuers which developed in a large scale after the deadly 'Sidr' hit the southwestern coastline in 2007, killing 3,363 and the subsequent 'Aila' cyclone in 2009, claiming 190 lives.
It said the maximum sustained wind speed within 54 km of the storm centre is advanced towards by more than 100 kilometers in last two hours.
According to the latest bulletin the cyclone with about 62 kph rising to 88 kph in gusts/squalls while it was located at about 700 kms southwest of Chittagong Port, 640 kms southwest of Cox's Bazar Port and 575 kms south southwest of Mongla Port in the afternoon while the sea appeared "very rough" near the storm centre.
Fellow meteorologists later said they could precisely predict exactly where the storm would hit with core intensity once the cyclone reached within 400 kilomtres of the coastline.