A sudden surge of water from upstream caused the Teesta embankment to collapse, flooding large areas across northern Bangladesh. The Flood Forecasting and Warning Centre issued a new alert on Monday, warning that within 72 hours, short-term flooding could occur in low-lying areas of Nilphamari, Lalmonirhat, Kurigram, Rangpur, Sylhet, and Sunamganj districts, with temporary inundation possible in parts of Netrakona, Mymensingh, and Sherpur. Local residents and water experts attributed the flooding to heavy rainfall in India and uncoordinated water releases from upstream.

Abdullah Al Hadi, chairman of Lakshmitari Union in Rangpur’s Gangachara, said the sudden flood broke the Teesta embankment, submerging vast farmland and damaging crops of about 50,000 people. He blamed India’s unilateral water management for repeated losses in Teesta basin areas. The Water Development Board confirmed that the floods were caused by heavy rainfall in India’s upstream regions, not domestic rain, and warned that the situation could persist for five days.

Meteorologists forecast below-average rainfall in June but expect heavier rain in Rangpur, Mymensingh, and Sylhet from June 27, which could worsen flooding in affected regions.