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Dhaka Tribune

Deep depression in Bay weakens, maritime ports asked to lower signal

Heavy to very heavy rainfall likely to occur across Bangladesh

Update : 23 Oct 2020, 09:15 AM

The deep depression over the northwest Bay of Bengal has weakened and turned into a depression, prompting the authorities to lower the warning signals for the coast areas.

The Met office has lowered its storm alerts to local cautionary signal number 3 from the local warning signal number 4 for the maritime ports in Chittagong, Cox's Bazar, Mongla, and Payra.

In its special weather bulletin on Friday morning, Bangladesh Meteorological Department (BMD) came up with the fresh warning after the deep depression weakened into a depression.

The southwest monsoon has withdrawn from the north-western part of the country, said BMD.

The depression over northwest Bay and adjoining areas moved northeast over the same area and was centred at 9am at about 375km west of Chittagong port, 385km west of Cox's Bazar port, 160km southwest of Mongla port, and 205km southwest of Payra port.  

It is likely to move in a northeasterly direction further and start to cross West Bengal-Khulna coast (near Sagar island) by this afternoon, the bulletin said.

Maximum sustained wind speed within 44km of the depression centre is about 40kph, rising to 50kph in gusts. Sea will remain rough near the depression centre, it said.

Due to the depression, the low-lying areas of the coastal districts of Satkhira, Khulna, Bagerhat, Jhalakathi, Pirojpur, Barguna, Patuakhali, Bhola, Barisal, Lakshmipur, Chandpur, Noakhali, Feni, Chittagong, and their offshore islands and chars are likely to be inundated by the wind driven surge of three to five feet height above normal astronomical tide.


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All fishing boats and trawlers over north Bay and deep sea have been advised to remain in shelter till further notice, it added. 

In another warning, the meteorological department asked the river ports to hoist warning signal number 2 till 6pm on Friday.

Heavy to very heavy rainfall likely

It has been raining all over the country including the capital Dhaka since Friday morning. 

Due to inclement weather, Bangladesh Inland Water Transport Authority (BIWTA) had asked the river ports of the country to stop plying of launches that are below 65 feet.

Under the influence of the depression, heavy to very heavy rainfall is likely to occur at places over Rajshahi, Rangpur, Dhaka, Khulna, Barisal, Chittagong, Mymensingh, and Sylhet divisions during next 48 hours commencing at 10am Friday, said the Met Office forecast.

In Chittagong, the deputy commissioner instructed people living in the hills to take shelter somewhere else; 15 shelter centres have been opened to the public to that end.

The highest rainfall of this season was recorded at 182mm in 24 hours in Chittagong.

Meteorologist Md Abdur Rahman Khan said rain will increase in some areas including Rajshahi, Rangpur, and Mymensingh in the afternoon.

"We hope the situation will improve at night," he added.

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