 Now, from your 24-hour weather station, here's Southern Iowa's most accurate forecast on Atomwa Radio. I'm meteorologist Megan Mulford with a look at your forecast. A heat advisory begins at 1 p.m. this afternoon and continues until 8 p.m. tonight. Slight chance of severe thunderstorms this afternoon, otherwise a blend of clouds and sun. Highs around 97, southwest winds 8 to 15 miles an hour. Currently, 91.