Two low pressures are set to form in the Bay of Bengal in October of which one might turn into a cyclone, said Bangladesh Meteorological Department (BMD) in its monthly climate outlook.
However, the Indian Meteorological Department (IMD) said one of the low pressures might form on Friday night and turn into a land depression by October 11 to cause heavy shower.
The second low might form on October 14 and might turn into a cyclone named ‘Gati’ from October 16 which could hit vast areas of Indian and Bangladeshi coastal regions adjacent to the Bay of Bengal, said IMD.
Flood Forecasting and Warning Centre (FFWC) of Bangladesh, however, predicted if a cyclone or a powerful land depression forms, it might intensify the flood situation further in many districts.
Many low-lying areas of Northern, North-Eastern and central regions are witnessing a fourth spell flood now amid heavy rain and onrush of water from neighbouring India.
FFWC said water had been receding for the last one week from the major northern and north-eastern rivers which might continue for next two days.
But flood water was still in the locality in several districts, according to FFWC.
It said only the river Karatoa was flowing over the danger mark on Friday while all other rivers were showing a declining trend.
Meteorologist Dr Sadequl Alam said the two low pressures might cause a delay in monsoon withdrawal this year. That means heavy rain might occur across the country also in October.
He said normal departure time for monsoon is September 20 to October 15.
But it might be late this time in October for the low pressures, he said in explanation.
Aman paddy, onion and potato on nearly 0.15 million hectares of land have been submerged in the fourth spell flood in 16 northern, north-eastern and central districts in September, according to primary findings of the Department of Agricultural Extension(DAE).