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