Rain lashed New York City and Long Island this week.
Water inundated streets in Brooklyn, Queens, and Long Island.
Flash floods hit homes and businesses.
The National Weather Service posted warnings.
Power lines toppled.
Power cuts followed.
Roads turned into rivers.
Some areas were cut off.
Emergency teams operated all week.
They assisted trapped residents.
Officials urged people not to drive through water.
Rainfall hit levels rarely seen at this time.
More rain might come.
More flooding could follow.