INDIANAPOLIS — Heavy rains have inundated central and southern Indiana, flooding roads, closing schools and heightening the fear of flooding along major rivers in the coming days. The National Weather Service reported nearly 5½ inches of rain fell Thursday near Bloomington and heavy rains left downtown streets temporarily impassable in nearby Ellettsville. Part of Indiana 46 was under water for a while. Several schools in the Bloomington area dismissed early because of flooding. The storms also prompted several tornado warnings across southern Indiana, but none was immediately confirmed. The weather service warned “significant” flooding is possible on the Wabash River at Lafayette and Gibson County and on the White River from Spencer downstream. At Spencer, the White River is expected to crest at nearly 7 feet above flood stage.