New Aerial Photographs Show Midwest Flooding Devastation
Part of what makes the recent Midwest flooding so unusual is the timing. The Mississippi River Valley typically gets most of its rain during the spring and summer when warm, moisture-rich air fuels wet weather. But this year's El Nino, in combination with climate change, increased fall temperatures and precipitation levels. So when 10 inches of rain fell in late December, the region's soils were already saturated and the water had nowhere to go but downstream.