CHICAGO (June 13, 2013)--A massive line of storms was spawning tornadoes and knocking out power as it moved through the Midwest.
Two tornadoes were reported in Iowa and others were reported in Illinois.
ComEd says it has crews working to restore electricity to 39,000 customers in northern Illinois while some 34,000 power customers have lost electricity in Indiana.
Forecasters say nearly 75 million people in 19 states may be affected before the storms subside.
They're also warning about the possibility of a derecho, which is a storm of strong straight-line winds spanning at least 240 miles.