NEW ORLEANS (AP) — The mayor of New Orleans says the city’s water pumps are “working at optimal capacity” as Tropical Storm Barry moves toward the state’s Gulf coast. But speaking at a Thursday news conference, New Orleans Mayor LaToya Cantrell added that flooding is a threat because slow-moving, heavy rains are expected from the storm. National Weather Service meteorologist says New Orleans could get 10 to 15 inches of rain Friday, Saturday and Sunday.