Another depression is likely to form over the Bay of Bengal from September 20 to September 25 affecting parts of Bangladesh and West Bengal in India.

According to some global forecast models, there is a possibility of rain in the country for six consecutive days from September 20 the next week.

Mostafa Kamal Palash, a weather and climate researcher at the University of Saskatchewan in Canada, confirmed The Daily Star about the depression in the Bay after analysing data from the forecast models.

When asked, AKM Nazmul Haque, a meteorologist at the Bangladesh Meteorological Department, said, "The impact of the low pressure created on September 9 is no longer on Bangladesh. However, the low pressure is still distinctly active and is flowing in the opposite direction."

But the low pressure is likely to intensify again and enter India by September 19-20, he said.

Under its influence, rainfall may occur in coastal areas and central part of Bangladesh, he added.

When asked about how much rainfall could occur, the meteorologist said, "It can't be predicted from so long back. It may not be right if I predict at the moment. We usually give weather forecast twice in 24 hours."

According to the American model, the depression is likely to form over the east Bay of Bengal adjoining Myanmar, west of Andaman and Nicobar Islands of India on September 20. It can move northwestwards in the next 24 hours and hit the land through the coasts of Bangladesh and West Bengal on September 21, said Mostafa Kamal.

So, there is a strong possibility of rainfall across the country for six days due to the low pressure, he added.

"Light to moderate rain may occur in Chattogram, Chittagong Hill Tracts and Cox's Bazar on September 19 and 20, the first two days of formation of the depression. The coastal districts of Barishal, and Khulna divisions are likely to witness moderate to heavy rainfall on September 20. The prime weather forecast models are indicating the possibility of moderate to heavy rainfall across the country again on September 21, 22, and 23, and light to moderate rainfall on September 24 and 25," he also said.

The districts of Barishal and Khulna divisions are likely to witness the heaviest rainfall (about 200 mm in 24 hours) on September 22.

The coastal districts of Barishal and Khulna divisions have a strong possibility of inundating the coastal areas at a height of three to six feet above normal, the weather researcher said.