The story has been updated to reflect lower chances of rain in the forecast from Weatherology. That said, the potential for storms outlined in this article still exists, with Fox 4 Joe Lauria's blog indicating those around the Kansas - Missouri state line have the best chance for storms between 8 PM -12 Midnight, with the risk decreasing after 10 PM...
A rare dust storm in rural Illinois near Springfield caused a chain reaction crash that killed six and closed Interstate 55. While rare, these dust storms do occasionally occur.
A tornado ripped through southeastern Missouri before dawn on Wednesday, killing at least five people and causing widespread destruction as the third in a series of deadly massive storms over the past two weeks struck the nation's heartland.
Meteorologists are urging people in parts of the Midwest and southern U.S. to be ready Friday for dangerous weather including tornadoes, saying the conditions are similar to those a week ago that unleashed a devastating twister that killed at least 21 people in Mississippi.
If you live in Illinois or Missouri long enough, you will see a tornado eventually. That being said I highly doubt you've seen a twister that seemed to give birth to a rainbow like one did in Illinois this week.