A cold front is stretched out from the Great Lakes to the southern Plains with high humidity streaming along it. With the tropical air present, showers and thunderstorms are able to produce high rainfall totals in a short amount of time. With the overall wind pattern light, storms move slowly and track over similar areas repeatedly, leading to the flooding threat. Over saturated souls further exacerbate the situation.
For WeatherNation: Meteorologist Mace Michaels