NEW: Tropical storm warning issued for northern Gulf Coast
By The Associated Press Troy Warren for CNT MIAMI — A tropical storm warning was issued Thursday for parts of Louisiana, Mississippi and Alabama as a potential tropical cyclone advanced toward the northern Gulf Coast. The warning extends from Intracoastal City, Louisiana, to the Alabama-Florida border, according to the National Hurricane Center in Miami. Heavy rainfall and flooding will likely be the most significant hazard, with the storm reaching the coast beginning Friday, forecasters said. As of Thursday evening, the storm was located about 475 miles south of Morgan City, Louisiana, with maximum sustained winds of 30 mph. The potential tropical…