What is Cloudburst and why is it so dangerous?

The summer of 2025 has seen record-setting heatwaves, forest fires, typhoons and torrential rainstorms that have triggered floods and landslides in various parts of the world. In southern China and parts of India, heavy rains have wrought havoc. A weather phenomenon called a cloudburst has been blamed for several deadly incidents that have killed hundreds of people in the region. Johnny Chan from the City University of Hong Kong explains why cloudbursts are dangerous and difficult to forecast.