Update, 12:44 p.m. Tuesday

Tropical Storm Cindy has officially formed in the Gulf of Mexico. Click here to read more.

Update, 9:52 a.m. Tuesday

The National Weather Service has increased projected rainfall totals across the Gulf Coast in its 10 a.m advisory on Potential Tropical Cyclone No. 3.

The entire Louisiana coast is also now under a tropical storm warning as of 10 a.m.

Officials note the PTC No. 3 has become better organized since Monday but still not enough to the point of being upgraded to a tropical storm.

"The system could be classified as a tropical or subtropical cyclone later today," the NHC said.

"Given the nature of the circulation and the fact that wind and rain hazards extend well north and east of the center, users are encouraged not to focus on the details of the track forecast."

Update, 7:30 a.m. Tuesday

A tropical system in the central Gulf of Mexico is gradually becoming better organized, the National Hurricane Center said in an update at 7 a.m. Tuesday.

It’s likely that the system will become a tropical or subtropical cyclone later Tuesday.

The system is located about 265 miles south-southwest of the mouth of the Mississippi River and is moving northwest at about 9 mph.

The system is expected to be near the Louisiana coast late Wednesday or Wednesday night. Some slight strengthening is expected before it reaches the coast, the National Hurricane Center said.

Original story

A tropical storm warning has been issued for a section of Louisiana's coast as a weather system approaches from the Gulf of Mexico.

The warning is in effect from Cameron, Louisiana, to Intracoastal City.

A tropical storm warning means that tropical storm conditions are expected somewhere within the warning area, in this case within the next 24 to 36 hours.

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The system's maximum sustained winds early Tuesday are near 40 mph. The U.S. National Hurricane Center says some slight strengthening is possible before the system reaches the coast, either late Wednesday or Wednesday night.

As of 4 a.m. Tuesday, the system is centered about 305 miles south-southwest of the mouth of the Mississippi River and is moving northwest near 8 mph.

Tropical storm-force winds are expected to reach the coast within the warning area by Tuesday afternoon. Tropical storm conditions are possible in the watch area on Wednesday.

The disturbance is expected to produce rain accumulations of 4 to 8 inches, with isolated maximum amounts of 10 inches over southeastern Louisiana, southern Mississippi, southern Alabama and the Florida Panhandle through Thursday morning. Coastal flooding of 1 to 3 feet is also possible in the warning area. 

A tornado or two is possible Tuesday afternoon and into the evening for south central Louisiana to the western Florida Panhandle.