Washington - Dozens of tornadoes swept across the US Midwest in a rare November blast of warm-weather storms, leaving at least eight people dead and unleashing powerful winds that flattened entire neighbourhoods, flipped over cars and uprooted trees.
Illinois was the hardest hit, with at least six people killed and dozens more injured. Authorities said on Monday that two other deaths occurred in Michigan.
The governor and others said the search for anybody trapped in the rubble continued, but officials doubted that the death toll would climb.
Illinois Emergency Management Agency Director Jonathon Monken said rescuers had just one field left to search in the hard-hit town of Washington before they can say with confidence that everyone has been accounted for.
The six people who died in Illinois included an 80-year-old man and his 78-year-old sister who were killed by a twister that hit their farmhouse near the rural community of New Minden.
In Michigan, officials said a 21-year-old man died when his vehicle was crushed by a fallen tree and a 59-year-old man was found dead and entangled in high-voltage power wires.
As the rain and high winds slammed into the Chicago area on Sunday, officials ordered the evacuation of fans from a football stadium and moved the Bears and Baltimore Ravens teams off the field for a about two hours, in a highly unusual interruption of a National Football League game.