Gretna is located in Jefferson County, Louisiana. This page shows active weather alerts affecting Gretna issued by the National Weather Service.
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Gretna in the greater New Orleans area sits below sea level in the Mississippi River delta, making it one of the most hurricane-vulnerable locations in the United States. Storm surge from Gulf hurricanes poses a catastrophic flood risk, and the region receives some of the highest annual rainfall in the nation.
Common alert types for this area:
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