[sapienthomo]

As they say: Is that a lot? I hate the way headlines measure things in useless units, just to get a bigger exponent. Why didn't they say it was 19000 trillion teaspoons? That's just as easy -- i.e. impossible -- to visualize. I think a possibly easier-to-visualize description is enough water to cover the whole state of Texas six inches deep.

[Johnny555]

The diagram of the huge cube of water hovering over the city wasn't enough to help you visualize that it's a huge amount of water?

They included several other visualization descriptions in the article. They can't put it all in the headline.