A tropical storm warning is in effect for parts of the Louisiana coast after a tropical depression formed in the Gulf of Mexico. The warning is in effect from the mouth of the Mississippi River westward to Intracoastal City. It means that tropical storm conditions are expected by tomorrow evening. New Orleans is not in the warning area. At 5 p.m. Eastern time, the depression's center was about 85 miles southeast of the mouth of the Mississippi River, and about 415 miles east of Galveston, Texas. The system is moving west near 6 miles-an-hour, and the center is expected to move parallel to the Louisiana coast tonight into tomorrow and approach the upper Texas coast on Tuesday. Maximum sustained winds are near 35 miles-an-hour, and the system could strengthen into a tropical storm by tomorrow. Rainfall of 1 to 3 inches is expected in coastal Louisiana, with 2 to 6 inches forecast in southeast Texas.