NYA Staff
We tend to think of flooding as a weather problem. But the storms we’re seeing that are increasing in their intensity may need to be thought about differently..
The latest example is Indiana, where several days of extraordinary rainfall have produced widespread flooding, deaths, evacuations and major power outages. The Guardian reports that some parts of the state received more than 11 inches of rain in just two days. The White River rose above 24 feet in parts of the state, breaking records that had stood since 1913. First responders were forced to use boats to rescue residents, including people in areas that haven’t been considered particularly vulnerable to flooding in the past.
At least five people have died as of Saturday, according to officials cited by the Guardian. The numbers are staggering, a result of flooding occurring in areas that haven’t traditionally experienced it. We tend to build our assumptions about the weather from the past. Flood maps are based on historical data. Roads, drainage systems, homes and emergency plans are designed around what communities have typically experienced over the years.
But what happens when typical changes? That’s the problem we’re seeing more often with extreme weather. A neighborhood that has never flooded may suddenly flood. A drainage system designed for heavy rain may be overwhelmed by an extraordinary downpour. Roads that drivers have used safely for decades can become dangerous within minutes. In other words, our baseline is changing and our past experience of dealing with weather extremes is becoming less relevant.
The Indiana disaster also raises a larger question about how we prepare for extreme weather. If rainfall that once seemed like a once-in-a-century event is becoming more common, communities may have to rethink everything from drainage and flood maps to emergency communications and where new homes are built. The real challenge is preparing for a climate in which yesterday’s definition of “extreme” may no longer be extreme enough.
Source: Uwa Ede-Osifo and agencies, “At least five people dead in Indiana amid worst flooding in over 30 years, officials say” The Guardian, Aug. 15, 2026.