Severe thunderstorm watch until 1 p.m. Severe thunderstorm watch until 1 p.m. Advocate staff report April 04, 2014 Comments The National Weather Service has issued a severe thunderstorm warning for south Louisiana. The watch for Baton Rouge and nearby parishes last until 1 p.m. Friday’s forecast calls for partly cloudy conditions with thunderstorms, then a chance of a thunderstorm and a chance of rain in the afternoon. High of 84 degrees. The chance of rain is 50 percent with rainfall amounts near 0.5 inches possible.