A storm system moving through the Upper Midwest will bring a threat for severe weather to start the work week. A slight risk for severe thunderstorms included parts of Minnesota, Wisconsin and Iowa. A few storms may produce large hail, strong wind gusts, and isolated tornadoes. A warm front lifting northward coupled with a low pressure center and cold front from the West will produce several rounds of thunderstorms. Robust Jet Stream energy and increasing wind shear will aid in severe thunderstorm development. The most likely area for severe storms will be north of the warm front and near the triple point. That's the axis of where the the cold front, warm front, and occluded front merge together. Stay tuned to WeatherNation on-air and online for severe weather updates. For WeatherNation: Meteorologist Mace Michaels