(NECN: Peter Howe) More devastating weather hit the U.S. heartland overnight as tornadoes killed at least 13 people -- tornadoes especially deadly because they hit in some cases around midnight when many people were asleep and never woke up in time to seek safe shelter in a cellar or bathtub.
At midday Wednesday, much of Illinois and Indiana south of metropolitan Chicago was under tornado watch, with forecasts of the greatest tornado danger in a zone from the Missouri boot heel east to Evansville, in southwestern Indiana.
In communities like Denning, Arkansas; Piedmont, Oklahoma; and Chickasha, Oklahoma homes were destroyed, in many cases down to the foundation.
Oklahoma Governor Mary Fallin said, "I've been in office for 20 years. I've been through a lot of these natural disasters, but I've never seen this many in a short period of time.''
Newly available surveillance video from a yogurt shop in Joplin -- where a Sunday tornado killed 120 people -- showed patrons making it to safety with just seconds to spare before the shop filled with swirling debris and destruction.
Joplin survivor Rick Morgan said, "What I remember is like Armageddon. It's like, everything you think is real and solid is suddenly--everything is, like, blowing up.''
With video editor Robert Leone