UPDATE 2-U.S. Gulf Coast ports restricting traffic ahead of Storm Gordon

(Recasts with production halt; adds details on New Orleans closing, updates pricing)

HOUSTON, Sept 4 (Reuters) - A second U.S. Gulf of Mexico oil producer halted some offshore production and ports along the coast curtailed operations on Tuesday as Tropical Storm Gordon strengthened and churned toward an expected nighttime landfall.

The storm, which is expected to strengthen into a category 1 hurricane with winds of at least 74 miles per hour (119 km/h), shifted eastward, reducing its threat to major production areas and most Gulf Coast refineries.

Chevron Corp said it shut in production and evacuated non-essential personnel from its Petronius platform. It followed Anadarko Petroleum Corp's decision on Monday to shut production at two oil platforms in the northern Gulf of Mexico.

But other oil producers, including ConocoPhillips and Royal Dutch Shell, said they continue to monitor conditions. The Louisiana Offshore Oil Port, the largest privately owned crude terminal in the United States, also said it was operating normally.

U.S. and global crude futures were up a fraction as traders did not expect the storm to have significant impact on Gulf output. The storm's potential threat also was overshadowed by production data, traders said.

"There may be slight delays loading from refineries due to vessels not berthing but it is not going to hurt production at all," said one trader, referring to refined products supply.

Ports from New Orleans to Mobile, Alabama, were closed to inbound traffic of greater than 500 tons at 8 a.m. local time, said Coast Guard Petty Officer Alexandria Preston. The port of Pascagoula, Mississippi, was closed to traffic by the U.S. Coast Guard, Harbor Master Cliff Porter said.

Matt Gresham, director of external affairs at the Port of New Orleans, said pilots who guide ships through the mouth of the Mississippi River at Southwest Pass had ceased operations, closing the pass to all inbound and outbound traffic.

Several companies had halted gate operations, and the port's administrative offices was to close at 2 p.m., he said. (Reporting by Jessica Resnick-Ault and Devika Krishna Kumar in New York and Erwin Seba in Houston Editing by Chizu Nomiyama and Dan Grebler)