Parts of New York City were under a flash flood warning Friday.
Heads up, #NewYorkCity! A #FlashFlood Warning is in effect until 10:30am EDT Friday. #NYwx pic.twitter.com/jHueBagq7F
— WeatherNation (@WeatherNation) August 4, 2017
Thunderstorms brought heavy rain to the area, causing flooding in some areas.
For one area, floodwater rushed down a flight of steps in Brooklyn, causing it to look like a mini waterfall.
The postal worker took this video while making his rounds early Friday morning in the Bay Ridge area.