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The U.S. national Hurricane center in Miami said before dawn Wednesday that Isaac's center was expected to pass over Louisiana today and tomorrow and on to Arkansas early Friday. It will weaken over the next two days as it passes over land.
Isaac came ashore Tuesday night near the mouth of the Mississippi River, then went nearly stationary for several hours over the sparsely populated neck of land that stretches into the Gulf of Mexico. It was headed for New Orleans, 70 miles to the northwest, on the seventh anniversary of Katrina
