Advocate photo by Matthew Hinton -- New Orleans Mayor Mitch Landrieu speaks about preparations for Tropical Storm Nate. 

New Orleans Mayor Mitch Landrieu announced Friday that a mandatory curfew will be in effect beginning at 7 p.m. Saturday ahead of Tropical Storm Nate. 

The curfew will be in effect until Sunday morning. The underpasses in the city will also be closed. 

Landrieu also said evacuation orders will be in effect for Venetian Isles, Lake Catherine and Irish Bayou. Those orders join evacuation orders already in place for Grand Isle, Jean Lafitte and parts of Plaquemines Parish. 

Tropical Storm Nate is expected to enter the Gulf of Mexico by Friday night and strengthen into a hurricane before making landfall along the Gulf Coast as earlier as Saturday night. The initial track showed the storm making a direct impact in New Orleans, but that had shifted eastward throughout the day Friday.

Updating the city's maligned pumping system, Landrieu said there are now 109 active pumps of the 120 available — one more than Thursday. The pumps will be manned 24/7, although residents should still prepare for street flooding.

Parking violation enforcement will be lifted as of 8 a.m. Saturday in order to allow people to park on neutral grounds and sidewalks. 

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