CARTERVILLE, Ill. (WSIL) — A tornado watch has been issued for some southern Illinois counties until 7 p.m. tonight.

Millions of people are under tornado watches across the central United States on Sunday, as a volatile weather system has triggered power outages and huge hail. Nearly 175 million people from Illinois to eastern Texas and beyond could be affected,

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.

The Storm Prediction Center has areas southeast of I-55 in an "Enhanced Risk," this is a level 3 of 5 on their severe risk scale. Locations near and along I-55 are in a "Slight Risk" (level 2 of 5), and then north and northwest portions of Chicagoland are in a "Marginal Risk" (level 1/5).

Most of central Illinois is under an Enhanced Risk of severe weather for Sunday, according to the Storm Prediction Center.

The National Weather Service (NWS) has issued a Tornado Watch for the entire Wabash Valley for Sunday afternoon into the evening hours. In Indiana, a

A Tornado Watch has been issued for Central Indiana until 8 p.m. This afternoon, a band of thunderstorms is expected to intensify from Illinois into Indiana while spreading northeastward. Damaging

The final day of astronomical winter in the Chicago area will see severe weather chances, while the first day of spring has snow in the forecast.

While parts of central Illinois remain under a tornado watch, another weather phenomenon called a "gustnado" could also threaten the region.