 Now, from your 24-hour weather station, here's Southern Iowa's most accurate forecast on Otomo Radio. I'm meteorologist Megan Mulford with a look at your forecast. A heat advisory begins at 1 p.m. this afternoon and remains in effect until 8 p.m. tonight. Sunshine mixed with clouds at times today with a slight chance of severe thunderstorms. Daytime highs approaching 97. Southwest winds 8 to 15 miles an hour. Currently 89.