Severe Flash Flood and Inundation in Banshkhali, Chattogram: Relief Efforts, Infrastructure Damage, and 23 Casualties

A severe flash flood, triggered by continuous heavy monsoon rainfall, mountain runoff, and tidal surges, occurred in the Chittagong region from July 4 to July 12, 2026. The disaster severely affected Banshkhali, Khagrachhari, and Bandarban. Approximately 500,000 people were waterlogged, 212 villages were impacted, 80-90% of homes in Banshkhali were submerged, and 23 people were reported dead, with 59 injured. Specific incidents, such as the total displacement of the Mohammad Nurul Karim family in South Ilsha village, highlight the severity of the housing and food security loss. Relief efforts were conducted by the As-Sunnah Foundation, Prothom Alo Trust, and student volunteer groups.