The National Weather Service has issued a Tornado Warning for Northern Clay County and Southwestern Effingham County in south central Illinois, effective from September 20 at 6:59 PM CDT until 7:45 PM CDT. A severe thunderstorm capable of producing a tornado was detected near Edgewood, moving southeast at 35 mph, posing a critical threat to the area. Post navigation Tornado Warning Issued for Southwestern Ohio Tornado Warning Issued for Richland and Northeastern Clay Counties, IL