Cindy, which had crossed Mexico's Yucatan Peninsula as a tropical depression, grew to tropical storm strength early Tuesday and had sustained wind of 50 mph by 11 a.m. EDT. The minimum for a tropical storm is 39 mph.
It could strengthen further before its center reaches the coast late Tuesday or early Wednesday, but it is not expected to become a hurricane, said the National Hurricane Center in Miami.
The Center moved the area of greatest impact a little to the east in its 11 a.m. advisory, with a tropical storm warning from Intracoastal City, La., eastward to Destin, Fla, and a tropical storm watch
east of Destin to Indian Pass, Fla.
The main danger would be if the storm stalls along the coast, dumping heavy rain over a small area for an extended period, said sheriff's Capt. Mike Sanders in coastal St. Bernard Parish.
"As long as the storm keeps moving, it really helps," Sanders said. Cindy was moving at a relatively rapid 14 mph.