I'm not sure where they get that number. We're supposed to have days of rain. There's no way it's 4-6 inches. The European mode shows significantly higher numbers.
https://arstechnica.com/science/2018...-bad-to-worse/
There's a drainage ditch out back and it is already half full.
I know it's probably ridiculous, but I'm going to head out. If I was in a higher apartment, then I would stay.