NEW ORLEANS (AP) - Forecasters say parts of New Orleans are under a flash flood warning, and heavy rains that fell in the overnight hours have knocked out power to thousands of residents.

Entergy says that more than 13,000 customers were without power early Tuesday morning in the city's Uptown area. Entergy said its crews were working before dawn to restore power as quickly as possible.

The National Weather Service said up to 3 inches (7.6 centimeters) of rain had fallen as of 6:15 a.m. Tuesday. Forecasters said flash flooding was possible in New Orleans, Chalmette, Harvey, Timberlane, Belle Chasse, Marrero, Gretna, Woodmere, Terrytown, Meraux, Arabi, Estelle, Poydras and Violet.