A dangerous Saturday into Saturday night is set to unfold across the Deep South and into parts of the Southeast as a prolific tornado outbreak hits at least half a dozen states. Threat level: The NOAA Storm Prediction Center has issued a rare "high risk" outlook indicating forecasters' confidence in numerous,

Three people were killed in Missouri as a series of tornadoes hit the U.S. Midwest and southeast overnight, raking a path of destruction that was still being assessed early on Saturday, police said. A

The meteorological agency said: "If you live in these areas, get to the sturdiest structure you have access to and remain in place until the storms pass." Mike Kehoe, governor of Missouri - where the 11 deaths were reported across four south-easterly counties - said the state had been "devastated by severe storms and tornadoes,