Hot, humid air led to flash flooding in Milwaukee, Wisconsin on Wednesday, September 8, 2016. The very same day, remnants from Hurricane Newton dropped months worth of rain across parts of Arizona and New Mexico. Both events caused flooding. Find
It's been a warm, humid summer for most of the Midwest, and the monsoon in the Desert Southwest has been a healthy one with a fair amount of rain over the last few months.
That warm, humid air led to flooding in Milwaukee where cars trying to get through flooded roads became stranded.