Cyclone Ditwah devastates Sri Lanka ^{CEFR B2}

Cyclone Ditwah struck Sri Lanka last month and caused widespread destruction and loss of life. The Disaster Management Center reported 643 dead and more than 180 missing. The storm brought extreme rainfall, triggered nearly 2,000 landslides, cut off dozens of towns and damaged major transport routes. Reservoir spill gates released surging water, producing downstream flooding that submerged some two‑storey buildings.

Early damage estimates placed losses at US$6–7 billion, about three to five per cent of GDP, and more than 1.1 million hectares were flooded, nearly one‑fifth of the country. A UNDP rapid assessment said more than half of those affected already faced unstable incomes, high debt and limited coping capacity.

Specialists argue the scale of the disaster reflects long‑standing planning and governance failures. The National Building Research Organisation had produced landslide‑hazard maps, yet many landslides occurred inside those high‑risk zones, a situation described by Rohan Cooray as a governance failure when mapped hazard zones collapse. Slopes in Nuwara Eliya, Badulla, Kegalle and Matale were weakened over decades by unregulated construction, informal settlements, steep cultivation and new roads that ignored stability guidelines. Lalith Rajapakse said the weakened slopes could not absorb or drain the extreme rainfall.

Scientists link Ditwah’s intensity to a warming Indian Ocean: Roxy Mathew Koll noted the ocean warmed about 1.2°C per century between 1950 and 2020, compared with about 0.9°C for global oceans. The Department of Meteorology recorded over 300 mm of rain within 24 hours at several hill‑country stations. Early‑warning gaps were exposed: some communities got warnings too late or received unclear technical messages, and power failures hurt communication. Experts urge impact forecasting, clearer location‑specific alerts and fuller use of tools such as cell broadcasting, and they say Sri Lanka must rebuild smarter and stronger with disciplined, science‑led planning to reduce future risk.