NEW ORLEANS — The mayor of flood-weary New Orleans has set an afternoon news conference to discuss preparations for Tropical Storm Nate, which forecasters said could hit the central Gulf Coast this weekend as a hurricane.

Mayor Mitch Landrieu’s Thursday afternoon news conference follows summer flash floods in parts of the city that revealed weaknesses in the pumping system that drains New Orleans.

Worries over Nate weren’t limited to New Orleans.

Gov. John Bel Edwards planned to meet with state emergency officials in the afternoon, prior to a news conference in Baton Rouge.

And officials of the town of Grand Isle, on an inhabited barrier island south of New Orleans, called a voluntary evacuation.