Here’s what to know about how scientists determine how extreme a flood is and how common these extreme events are becoming.

Weather forecasters sometimes warn of storms that unleash such unusual rain they are described as 100-year or even 500-year ...

Sometimes you'll hear the phrase "100-year flood." Here's how meteorologists define that term and how to see if you live in a flood plain.

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

Here’s what to know about how scientists determine how extreme a flood is and how common these extreme events are becoming. What does a 100-year flood mean? Scientists use math to help people ...