Nine tornadoes struck Missouri and Kentucky on May 16, including a deadly EF3 in Scott County that killed two people and destroyed homes. The National Weather Service confirmed tornadoes up to EF4 strength.

More than two dozen people were killed and dozens more injured as powerful tornadoes and severe storms ripped across Illinois, Missouri, Indiana, Kentucky, Virginia and even parts of the Washington, D.

Severe thunderstorms and tornado watches are in place on Tuesday, with 30 million Americans on alert for strong winds, large hail and flash flooding.

At least 21 people are dead in Kentucky and Missouri on Saturday after a night of severe weather and tornadoes battered cities large and small across the two states, with officials warning the death toll is likely to rise. At least 14 people have been killed in Kentucky while seven have been reported dead in Missouri, according to state officials.

At least 27 people have died in Kentucky and seven more were killed in Missouri -- five of them in the St. Louis area.

Authorities in Kentucky expect the death toll of 14 to increase as they continue to search the ravaged areas. Nine of the dead were in Laurel County, where a tornado hit just before midnight on May 16, the sheriff's office said. Many more were injured there.

Portsmouth-based Mercy Chefs, a disaster relief organization, is providing aid in Kentucky and Missouri following a deadly tornado outbreak in the region.