A potential flood is looming over four districts—Sherpur and Netrokona in Mymensingh Division, and Sunamganj and Sylhet in Sylhet Division—within the next 24 hours. Heavy and continuous rainfall in India's Meghalaya and Assam is causing a surge of water to flow downstream into Bangladesh.
In Sherpur, persistent rain over the past four days has already accelerated the rise in river water levels. The Chellakhali River has now crossed the danger line.
Mustofa Kamal Palash, Chief Meteorologist at the private weather platform Abahawa.com, confirmed the development on Tuesday (May 20). He warned that flash floods could begin in various rivers of Sherpur, Netrokona, Sunamganj, and Sylhet districts within the next day.
He also noted that from Tuesday through Wednesday noon, moderate to heavy rainfall is expected to continue across Rangpur, Mymensingh, and Sylhet divisions.
According to the Sherpur Water Development Board, as of 10 am Tuesday, the Chellakhali River was flowing 106 centimetres above the danger mark—up from 39 centimetres above the night before.
The Board also confirmed that early morning downpours and heavy upstream rainfall have further worsened the situation, increasing the risk of flooding in the affected regions.