In 2011, a short but catastrophic cloudburst hammered Copenhagen, flooding parts of the Danish city with more than 5 inches of rain in a single day. The storm caused more than $1 billion in damages. It also catalyzed a transformation across the city.
Source: [Inside Climate News](https://insideclimatenews.org/news/16062026/todays-climate-sponge-cities-rain-flooding/)