When flooding is severe, you'll sometimes hear the phrase "100-year flood ... Indiana a federal disaster area. At the time it was considered the second 500-year flood within a 15-year window ...

A "100-year flood" means a 1% chance of that level of ... In some regions, the same areas that experience destructive floods may later face devastating drought conditions. This variability makes ...

Weather forecasters sometimes warn of storms that unleash such unusual rain they are described as 100 ... year floods. Here’s what to know about how scientists determine how extreme a flood ...

Weather forecasters sometimes warn of storms that unleash such unusual rain they are described as 100-year or even 500-year floods. Here’s what to know about how scientists determine how extreme a ...