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.

When flooding is severe, you'll sometimes hear the phrase "100-year flood ... you live in a floodplain. More about flood zones: Do you live in a flood risk area in Marion County?

A "100-year flood" means a 1% chance of that level of flooding happening each year. Houston saw three 500-year flood events within three years from 2015 to 2017, including Hurricane Harvey.

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 ...

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

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

Read full article: 1.2 million gallons of raw sewage dumped in Macomb County ... as 100-year or even 500-year floods. Here’s what to know about how scientists determine how extreme a flood ...