At least 19 people are dead, including children, and more than half a million homes and businesses are without power after 11 tornadoes and other storms ravaged several Southern and Great Plains states over Memorial Day weekend.

At least eight deaths were reported in Arkansas, seven in Texas, two in Oklahoma, and two in Kentucky, with another 110 million people remaining under severe weather warnings on Monday, including for extreme heat in some parts of the country, as the worst of the system moves toward the Northeast.