The maritime port of Cox's Bazar has been asked to hoist great danger signal no 10 lowering the previous great danger signal no eight (8).
At the same time, Chittagong and Payra ports have been asked to hoist great danger signal no eight and Mongla local warning signal no four (4).
State Minister for Disaster Management and Relief Md Enamur Rahman announced this in a briefing at the secretariat on Saturday.
Cox's Bazar deputy commissioner Shaheen Imran told UNB that the maritime port of Cox's Bazar has been asked to hoist great danger signal No 10.
On Saturday morning, the cyclone Mocha was centred about 815 km south-southwest of Chittagong port, 745 km south-southwest of Cox's Bazar port, 785 km south of Mongla port and 745 km south of Payra port, said the latest Met office bulletin.
It is likely to intensify further, move in a north-northwesterly direction and cross Cox's Bazar-North Myanmar's coast between 6am to 6pm on Sunday.
Coastal areas of Chittagong and Barisal divisions will experience the peripheral effect of the very severe cyclonic storm by Saturday night, said the bulletin.
Maximum sustained wind speed within 74km of the very severe cyclone centre is about 160kph, rising to 175kph, in gusts or squalls.
Sea will remain very rough near the storm centre.
The coastal districts of Cox's Bazar, Chittagong, Feni, Noakhali, Lakshmipur, Chandpur, Bhola and their offshore islands and chars will come under great danger signal no eight.
Under the peripheral effect of cyclone and steep pressure gradient, the low-lying areas of the coastal districts of Cox's Bazar and Chittagong and their offshore island and chars are likely to be inundated by the wind driven surge height of 8-12 feet above normal astronomical tide.
The low-lying areas of the coastal districts of Feni, Noakhali, Lakshmipur, Chandpur, Bhola and their offshore island and chars are likely to be inundated by the wind driven surge height of 5-7 feet above normal astronomical tide.
Under the effect of a very severe cyclone, Chittagong, Sylhet and Barisal divisions are likely to experience heavy to very heavy rainfall.
Due to very heavy rainfall, landslides may occur in places over the hilly regions of Cox's Bazar, Bandarban, Rangamati, Khagrachhari and Chittagong.
All fishing boats and trawlers over North Bay have been advised to remain in shelter till further notice.
