Severe flash floods swept the metro Saint Louis, Missouri area on Tuesday stranding people on roads and in their homes. The historic flooding came after thunderstorms unleashed heavy rain across region, in some places, dropping a foot of rain in less than 12 hours. Motorists were trapped in their cars on highways. One person was found dead in a flooded car.  The flooding is all part of the intense weather system that has brought record heat nationwide. Millions in the Pacific Northwest are enduring a lingering heat wave.