Caught in the Storm," explores the tornado that hit Joplin, Missouri in 2011, which reshaped how tornado warnings are issued.

Jackson County emergency officials say the new system glitched during Sunday's storm, causing two sirens not to go off initially. Vendors to resolve problems before the next wave of weather mid-week.

The National Oceanic and Atmospheric Administration fired hundreds of employees at the end of February, including meteorologists.

Some residents believe officials waited too long to turn on the county's tornado sirens during Sunday's severe weather.

Spencer County Emergency Services director Robert Klinglesmith says while some people say they heard sirens, others said they did not. He attributed this to factors such as weather conditions, wind direction, and whether residents were indoors at the time.

A series of severe storms triggered tornado warnings and tornado watches in much of central and northern Illinois on March 19, moving out of the area by late evening. The storms caused a smattering of power outages in northwest Indiana and widespread damage across the Chicagoland area.

A tornado warning will tell you specifically what prompted it to be issued. Many are issued based on radar showing rotation, indicating a tornado is possible. Others can be confirmed as in progress by debris detected on radar or visually by a spotter.