The Flood Forecasting and Warning Centre on Sunday warned that rivers in parts of northern, northeastern and southeastern Bangladesh are likely to cross danger levels within 24 to 48 hours, triggering short-duration flooding in adjacent low-lying areas as heavy rainfall is forecast in parts of Bangladesh and upstream Indian regions.

Three rivers are already flowing above their danger levels at five monitoring points across five districts, the centre said in a special report. The Sangu river is flowing above the danger level at Bandarban and Dohazari, the Kushiyara river at Markuli and Fenchuganj, and the Someshwari river at Kolmakanda.

The centre said heavy to very heavy rainfall was expected over Sylhet Division and the Indian states of Assam and Meghalaya over the next 24 to 48 hours, which could further raise water levels in rivers across the northeastern region.

In the southeast, the Muhuri, Feni, Selonia and Halda rivers in Feni, Chattogram and Khagrachhari districts could exceed danger levels at some locations, inundating adjacent lowlands, while parts of Lakshmipur and Noakhali may see temporary flooding.

The Surma and Kushiyara rivers are forecast to keep rising over the next 24 to 72 hours, with flood conditions in low-lying areas of Sylhet and Sunamganj likely to worsen and fresh short-term flooding possible along the Surma.

The Sarigowain, Jadukata, Someshwari and Bhugai-Kangsa rivers in Sylhet, Sunamganj, Netrokona, Sherpur and Mymensingh may also exceed danger levels at several locations, the centre said.

In northern Bangladesh, the Teesta, Dharla and Dudhkumar rivers in Nilphamari, Lalmonirhat, Rangpur, Kurigram and Gaibandha are likely to cross danger levels over the next 24 to 48 hours, causing short-term flooding in associated low-lying areas.

The centre said the Sangu and Matamuhuri rivers in Bandarban, Chattogram and Cox’s Bazar, and the Manu, Dhalai and Khowai rivers in Moulvibazar and Habiganj, may fall over the next 24 hours, improving flood conditions in adjacent low-lying areas.