This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated.JEAN LAFITTE, LA — Mandatory evacuations are ordered in the town of Jean Lafitte, as well as other low-lying areas of Jefferson Parish. Jefferson Parish President Mike Yenni made the announcement Thursday morning in advance of the expected impact of a tropical system in the Gulf of Mexico. Grand Isle initially issued a voluntary evacuation order which was changed to mandatory as of Thursday morning. Other areas also affected by the mandatory evacuation order include Crown Point, Barataria, and Jean Lafitte. The system in the gulf is forecast to become a tropical storm and perhaps a hurricane by this weekend. But the system’s track remains uncertain. Some areas in Louisiana could see up to 20 inches of rain by Monday.