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That was after rainfall records were shattered across the area on Sunday, including at John F. Kennedy International Airport, which had the wettest day on record with 7.80 inches, smashing the 1984 record of 6.27 inches, said meteorologist Meghan Evans on Accuweather.com. "Nearly twice the normal monthly rainfall was delivered in one day," Evans said of the New York City area.
Rain records were set throughout the mid-Atlantic on Sunday, including Newark with 6.4 inches (old record 1.1 inches set in 1999) and Philadelphia with 4.8 inches (1.7 inches in 1977).
On Monday, puddles resembling ponds swamped roadways across Staten Island and other New York boroughs, submerging cars, their roofs like turtles' backs barely peeking above the surface.
No major delays were reported at New York, New Jersey or Philadelphia airports. Flooding was caused by the slow moving storm as well as parched soil from an otherwise dry summer, making it difficult for rainwater to easily penetrate the hard ground, weather experts said. There had also been flood watches in effect in the Washington, D.C., area on Sunday, and thunderstorms and heavy rains lashed parts of the region on Sunday night.
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http://www.reuters.com/article/2011/08/15/us-weather-idUSTRE77E34820110815